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Top 10 Oil-Filled Radiant Heaters (Nov. 2022) – Reviews and Buyers Guide

I love winter! It is by far my favorite season. I love the chilly air, donning winter attire and curling up with a good book! What I don’t love, however, is actually being cold. To me, there’s nothing worse than a cold room in your home. Choosing a heating source can be a difficult task! More often than not, at least in my experience, people wait until they feel the cold before they start looking into a new heating source and by this time, are trying to rush through the decision process so they can be toasty warm in no time.

You’re probably here because you’ve already decided that an oil-filled radiant heater is the best thing for your space. After all, they’re an easy and comfortable way of heating a room. However, there are still some important decisions to be made once you’ve got this far. It can be a massively daunting task to sift through specifications and product descriptions, as well as those all-important reviews. Furthermore, what is important to you in an oil heater might not be important to someone else. Sometimes, you might not even know whether design or efficiency is your key priority.

Here at The Soothing Air, we’ve done the bulk of the hard work for you so read on to find out what we consider to be the best oil filled heaters of 2018 and let us help you to get your space warm and cozy!

Why Should You Trust Us?

Going through product specifications and reviews is a pretty onerous task. It can also be difficult to know what reviews you can trust and when you need to gloss over something that is biased. Here at The Soothing Air, we have heaps of experience in reviewing products and our sole purpose is to help our readers find the best product for them. So, not only can we cut the time it takes you to find what you’re looking for, but you can be count on us to be objective and without bias or affiliation.

In total, we have been running methodical product research for the past 5 years and in this time, we have not only gathered loads of experience, but we have become really efficient in finding out what we need to know about each product out there.

For this best oil filled heater review we have carried out over 72 hours of intense research before coming to our conclusion. To add greater depth to our reviews, we involve volunteers in the process and make sure to eliminate any subjective or biased reviews. We also make sure that we look at a range of brands, thus you can see from this that we are not trying to promote one brand over another. For this review alone, we looked at more than 15 different brands and over 40 products from those brands. Now that’s a lot of oil-filled radiant heaters!

From all of the products we looked at, we shortlisted 17 and from them, we then selected our Top 10 and ranked them in order and that’s what you’ll see here in this Best Oil Filled Heater Guide.

Why Use Oil Filled Radiant Room Heaters

Oil filled heaters come in a vast array of designs with a lot of different features to boast of. Though they are ultimately used to heat up a room or space and all have the same basic working principle. So, how do they work and how efficient are they?

An oil filled heater contains a thermal fluid or diathermic oil, that is engineered. The oil is warmed, which produces radiant heat, which is transferred to the air in the room through the process of convection. Because it takes longer to heat up a liquid than it does a wire element, these heaters do take longer to heat up your space in the first instance. However, oil has the benefit of being able to retain heat really well, so, should the temperature drop in your room, they are more efficient in bringing it back up. What is more, you can even enjoy the warmth of an oil filled heater for a while after you turn it off since the oil is made to cool down slowly. This is different to convector heaters since a convector heater doesn’t retain heat. These factors make oil filled heaters really energy efficient and thus will help keep fuel bills down.

In terms of running costs, oil filled radiant heaters are much more efficient than standard electric heaters and because they have individual thermostats, you can really tailor the heating in your home to be exactly what you need. For example, you might want your lounge to be warmer than your bedroom. Having individual heaters with their own thermostats allows you to be really specific about the temperature of each room and when they are in use.

Oil filled heaters also have many advantages over other portable heaters like fan heaters or ceramic heaters. For one, they are quieter. Also, as oil filled heaters heat the room through convection, they distribute the heat much more evenly and pleasantly and there are no hot or cool spots in the room. They also don’t dry the air out, unlike fan heaters and need very little maintenance and cleaning.

Finally, oil filled radiant heaters are pretty much risk-free. There are no exposed heating elements, flames or fumes and so they are less likely to cause issues like a fire. Also, the built-in thermostat means that they automatically turn off if they get too hot.

What to Look for in an Oil Filled Radiant Room Heater?

There are a few things to bear in mind before deciding upon which oil filled heater to buy:

The room:

Think carefully about the space you are wanting to heat and whether or not the heater you’re looking at is adequate for the size of your room. Most specifications will give you information about how many square feet the heater is suitable for so it is a good idea to work out how many square feet of space you have. Your heater won’t be efficient if it is too small for the space and will end up costing you lots more in running costs as it will be more difficult for the thermostat to reach the desired temperature. Also, if you are wanting something to heat up a draughty or uninsulated space like a garage, then it might be wise to consider other heating options as an oil filled heater might not be the most efficient for warming up the space.

Hot to touch:

Unlike infrared heaters covered in cool-to-touch cabinets, most of the oil filled radiators are very hot to touch and therefore can be unsafe for use around children or animals. If you fall into either of these categories then it’s wise choosing a heater that is cool to the touch, even when in use. Heaters that are taller are usually cooler to the touch as they have a larger surface area over which to distribute the heat.

Safety features:

Many oil filled radiant heaters come with safety features such as an auto shut-off switch that automatically turns the heater off should it get too hot. Conversely, many also have an anti-freeze feature for cooler environments.

Although very safe in general, oil filled heaters can be a fire risk if they tip over and are covered with combustible materials like a towel or sheet. Lots of heaters come with a feature that automatically switches off the heater if it is tipped over. It is also wise not to put any objects within 3 feet of your heater.


This is something to consider if you intend to use the heater in different rooms. Oil filled heaters can be incredibly heavy and many have wheels to enable them to be moved more easily. Be aware that they should be completely cooled before moving.


Many manufacturers sell oil filled radiant heaters that are made from a rust-resistant material like enamel for durability. It is worth looking into the material used as this can affect how durable the product is.

How We Picked and Tested

As previously mentioned, we have spent over 72 hours researching the products in our Best Oil filled Heater guide and it was a time-consuming but thorough process that involved lots of different steps along the way.

We began our research by trawling through numerous consumer reviews of existing products. By reading these reviews we were able to gain an understanding of what people are wanting when they purchase an oil filled radiant heater. Much to our surprise, we noticed that many eco-conscious consumers had kept their focus on reducing their carbon footprints even when using a heater. It was just as important for users to read both negative and positive reviews as they both give very different insights into what people want, need and get from the different oil filled heaters on the market. We read over 10,000 user reviews for this step alone! By the end of this research process, we had analyzed over 40 different oil filled radiant heaters in an extremely thorough way and knew their advantages and drawbacks inside out!

From the products we analyzed in our research, we gathered a shortlist containing the 17 oil-filled heaters that we considered to be the best and that we wanted to look at in more depth. So, with our list of 17 in hand, we visited store pages selling each product to see what information we could gather. By reading their product descriptions and specifications in numerous places, we were able to determine the typical features of each product. We also double checked these by reading individual critic reviews to ensure the product information was really accurate.

For the next step, we involved a diverse group of volunteers to test each specific model from the 17 in our shortlist and asked them to provide us with their personal feedback. We compared their final product-test reviews with our initial research data in order to find out which ten products among the 17 were the best. Once we had our list of ten products, we ranked them into a Top 10 order, which you will see below.

Our Top Ten Product List

Our research led us to understand the features that oil filled radiant room heaters can have – the same process we followed when reviewing humidifiers, dehumidifiers, air conditioners, carpet and vacuum cleaners, and more household goods right here on The Soothing Air. From this in-depth process, we found a possible 27 different positive features. We found most of these features on the product manuals and specifications. We also made sure to include features that we discovered through our research as things that were really important to users when they’ve reviewed the products.

We also feel that is important to look at product reviews in conjunction with the frequency of which each product was reviewed. If a product is reviewed frequently and positively, we can be sure that this is something that people are buying often and are happy with their purchase. By looking at products in this we were able to determine and exclude obsolete heaters from our list so that consumers can find an accurate guide to the best oil filled radiant room heaters of 2018. So, with the process complete, we are now ready to present our Top Ten products.

Best for Large Rooms: DeLonghi 1500W ComforTemp EW7707CM

Why is This Product Best for Large Rooms?

The heater for large rooms

This heater is perfect for anyone that is looking to heat a really big space. So many people rave about how great it is online, which is no surprise as it is packed full of awesome features.

Before giving you the lowdown on this product and its features in detail, let me tell you why this product is our number one pick.

  1. Out of the 27 positive features, we identified when carrying out our extensive product research, the DeLonghi EW7707CM comes with 19. Whilst makes it the 2nd highest number of positive features of all the products in our Top 10, it is actually the highest number among the oil heaters that are geared towards heating larger spaced.
  2. Although the price of this product is on the expensive side, for the unique combination of the most user-friendly features it offers, we deemed to price to be reasonable.
  3. From all of the products we looked at, this had the highest number of reviews. In fact, it had over 2300 on Amazon alone at the time of research. Not only that, but the average rating of 4 out of 5 was one of the highest out of all of the oil heaters on our list. It seems to be the most popular oil heater amongst consumers since it has an excellent review frequency. To explain further, this product has been receiving 10 reviews within 45 days. That might not sound like a lot, but when we have products on the list that don’t see a review in six months or so, this product stands out. Among oil heaters, therefore, this is clearly a popular choice.
  4. We chose this product as the best choice for large rooms. When we compared all of the 1500W oil heaters suitable for large rooms, this one consumed the lowest amount of electricity due to its Comfor-Temp feature that maintained the optimal room temperature automatically.

Detailed Review

Capacity and Design:

This 1500-watt oil radiator heater weighs in at a hefty 21.9lbs and measures 14 x 6 x 25 inches and is therefore suitable for medium to large rooms. It is manufactured in China from a rust-resistant and durable material. This is the heaviest product in our Top Ten and it doesn’t have a carry handle, which means it is less portable than many others on our list. It does, however, come with DeLonghi’s patented smart-snap wheels, which allow it to be moved more easily.

best oil filled heater:

Programmability and Features:

One of the great things about this heater is that it doesn’t need to be assembled. Also, the oil reservoir is sealed permanently; so it never leaks and doesn’t need refilling. It has an adjustable thermostat and 3 heat settings on its manual controls but there is no digital display.

Although there is no timer or remote, this heater shuts off automatically when the desired room temperature is reached. There is also a ComforTemp button, which helps to cut your electricity bills by maintaining the room temperature automatically.

In terms of safety features, this oil radiator heater doesn’t get hot to the touch, which is important if you have children or pets at home. There is also a tip-over switch meaning that should it be knocked over, it will automatically turn off.

The DeLonghi EW7707CM has an anti-freeze program. This means that the unit turns itself on if the temperature falls below 44°F, which is great for avoiding frozen pipes! Equally, if there is a power outage, the heater will restart automatically.

Other factors:

At around $149, this heater is the most expensive in our Top Ten. However, it certainly packs a punch with the features it has. Additionally, it has over 2 and a half times the number of reviews than any other product on our list and with this, still manages to maintain a very respectable average rating of 4 out 5. It also carries UL listed certifications and a 1-year warranty for peace of mind. Finally, it has a 6’ power cord and operates quietly, so is really convenient.


  • 19 positive features out of a possible 27
  • Over 2300 reviews and a high rating
  • Excellent review frequency
  • Tip-over shut off
  • Anti-freeze setting
  • Auto-restart after a power outage


  • Large
  • Heavy
  • No carry handle
  • No timer
  • Not digital
  • Manual controls


The reviews and excellent average rating speak for themselves! If you’re not bothered about digital controls or having a remote control and you want to heat a large space, this would be the best oil heater in the current market.

Best for Small to Medium Rooms: DeLonghi TRN0812T Oil filled Heater

Why is This Product Best for Small to Medium Rooms?

Small but perfectly formed

This model is perfect for smaller rooms. It is small itself, but still comes with an amazing 96 different feature settings. Although it lacks digital controls, it does come with a tonne of safety features.

Since we considered the best for large rooms, we needed to identify the best oil filled heater for small to medium rooms as well. With this in mind, we looked specifically at products with a power of 1200 watts and found 2 heaters with this specification in our shortlist of 17. These were the DeLonghi TRN0812T and the Comfort Zone Oil-Filled Electric Radiator Heater. With our search narrowed down to just two products we then decided to complete more rigorous tests and review them both again in order to find the best fit.

The DeLonghi product caught our eyes again as it had way more reviews on Amazon, so we had a wealth of information available to us from consumers. In fact, it had over 9 times the number of reviews than the Comfort Zone heater as well as a better rating and review frequency. This oil space heater also had more positive features. It had 18 in comparison to the Comfort Zone’s 15 and made it to 3rd in our shortlist list of 17 with this number. Finally, the price of the DeLonghi was also lower so it is much more feature-rich for its price.

One thing to love about this product is the fact that you have 96 different setting combinations! You can change the watts, the desired temperature as well as have different settings for night use and day use! It also doesn’t compromise on safety and can even be used in a bathroom, thanks to its GFI plug.

Detailed Review

Capacity and Design:

This 1200-watt oil heater weighs 17.3lbs and measures 7 x 18 x 15 inches making it suitable for a small to medium room. It is the 3rd heaviest product in our Top 10 but doesn’t have wheels or a carry handle, which makes moving it more difficult. It does, however, have a convenient GFI plug meaning it can be used safely in a bathroom. It is made from rust-resistant materials and comes fully assembled so you can enjoy being warm in no time!

best oil filled heater:

Programmability and Features:

There are an impressive 96 setting combinations so you can really tailor this radiator’s output to your needs. There are 3 main heat settings of 500W, 700W and 1200W but it also allows you to program it for the amount of time you require and includes the possibility of being able to choose different times throughout the day or night. So, despite not having an eco-mode, you can really get the most out of your heater without wasting electricity.

Safety-wise, this is a great oil filled radiator as it is not lacking in safety features. It shuts off automatically when the desired temperature is reached and it also restarts after a power outage. There is also the bonus of a tip-over switch and an anti-freeze setting, which kicks into action at around 42°F. You can also rest assured with this heater as, unlike many on the market, this one is cool to the touch.

As with our Number 1 Pick, this oil heater has manual controls and doesn’t come with a digital display or remote control but, unless this is something you’re desperate for, it doesn’t impact in the heater’s function in any way.

Other factors:

This oil heater has a 6’ cord and operates silently. This heater reaches our second spot in terms of the number of reviews it has at 840. It has an average rating of 3.4 out of 5, which is quite a bit lower than our Top Pick. However, most of the negative reviews center on the product stopping working prematurely so it is worth ensuring you purchase this product with a good warranty. According to DeLonghi’s warranty information, you can get a 7-year warranty on DeLonghi oil heaters, so this is definitely something to ensure you get.

With a price tag of $59, this is below the average price of all of the products in our Top Ten list. It is also UL listed and OSHA approved.


  • Heats up a small to medium room efficiently
  • Can be used in a bathroom
  • Possibility of a 7-year warranty
  • 96 setting combinations
  • Lots of safety features


  • Lower review score
  • Negative reviews of product stopping working prematurely
  • No digital controls or remote control


This is a great heater for a smaller room and I love how it can be tailored with 96 different features! It is worth ensuring you can access the 7-year warranty if the negative reviews of product failure put you off.

Best for Personal Use: COSTWAY Oil Filled Portable Radiator Heater 700W

Why is This Product Best for Personal Use?

Your own great heater

This heater is for one person to use in a variety of situations. It is light, easy to carry, is packed full of safety features and is cheap. So if you want to warm up at your desk, then this is the one for you.

If you work in an office where others like the temperature to be on the cooler side, it’s worth considering a heater for your personal space. This Costway oil filled radiator heater is ideal for keeping under your desk and keeping you warm.

Initially, we had three top contenders for this category, that is to say, heaters that were in or below the 700-watt range. We picked this Costway as the best option for personal use because it was the highest rated heater in not only this category but in all the categories of heater we researched in our shortlist of 17. Its rating of 4.4. out of 5 was 0.3 higher than any other in our shortlist, which definitely gives it the edge! It is obvious, therefore, that consumers are very happy with its overall quality and performance. In terms of review frequency, this was also much better than the other contenders in this range, meaning it is more popular.

It is lightweight and has a carry handle for easy movement between places at home or work. It is also silent and so won’t disturb you when you’re working or if you use it in the bedroom overnight. Finally, since it is designed to be smaller and for personal use, it is easy to store away for the summer months!

Detailed Review

best oil filled heater:

Capacity and Design:

Though not the lightest of all the oil heaters in our Top 10, at 8.6lbs this Costway 700W mini portable is light enough to move wherever you desire but also sturdy enough not to be knocked over. It measures a tidy 12 x 5.5 x 14 inches and is therefore compact enough to have in small spaces like under a work desk. Its metal casing bears manual controls which allow you to adjust the thermostat to your desired temperature. The carry handle allows for great maneuverability too.

Programmability and Features:

The only assembly required is to put on the snap-on feet, something which is very easy and takes a matter of seconds. The heating settings are operated manually and are simple in that there is a minimum to maximum dial to adjust.

As this is for personal use, it is fairly basic in operation: there is no time or digital display with a remote. This doesn’t mean it compromises on safety features, however. If the heater becomes lopsided or too hot it will shut off automatically. It is definitely worth pointing out, however, that this radiator is hot to the touch and therefore might not be suitable for spaces where children or pets have access.

Other factors:

This Costway oil filled heater has a fantastic average rating of 4.4 out of 5, coming from 85 reviews at the time of research. It also has a good review frequency, meaning that it is purchased frequently and consumers are happy with their purchase. Given its intended use for personal space, the cord is shorter than others in our Top 10.

It comes with a price tag of around $40.99, which is the lowest of all products in our Top 10, but this is to be expected with its intended use for smaller spaces. Again, due to its design for personal use, it isn’t as feature-rich as other heaters in this guide. It does, however, have 12 positive features, which isn’t the lowest in our Top 10.


  • Lightweight
  • Has a carry handle
  • Excellent average rating
  • Good review frequency
  • Good safety features
  • Low price


  • Hot to the touch
  • Negative reviews about it breaking prematurely – but DeLonghi do offer a 7-year warranty.


Whether working in a large office with a cooler temperature than you’re comfortable with, or you’re sitting at a desk at home, this personal heater is ideal for warming up your space. It has excellent reviews and an excellent warranty for peace of mind.

Value Pick: PELONIS NY1507-14A Radiator Heater (Digital)

Why is This Product Our Value Pick?

A popular choice

This heater is rated really highly by many customers. It is great value for money, and it is stylish, whilst also having the latest digital controls and LCD display. A firm favourite.

Our value pick has been chosen because it provides the highest value when considering the price per feature. Of all the products on our list, this one has 23 out of 27 identified positive features. This makes it the most feature-rich product, not only in our Top 10 but in out of all 17 products in our shortlist. To compare, the next highest number of features is 19 so it has 4 more positive features!

Cost-wise, it is also very reasonably priced – the price tag of around $70 makes it one of the cheapest among all of the 1500-watt oil heaters we’ve researched. Despite all its great features and its low price, it has only received around 200 reviews. When we have heaters with over 2000 reviews, this just falls short in terms of popularity. In addition, the Pelonis NY1507-14A doesn’t have a cool-touch body, making it a little inconvenient and unsafe if we compare to other products on our list. Despite this, this oil filled heater is definitely a good buy as you certainly get your money’s worth due to its price-to-feature ratio.

Detailed Review

best oil filled heater:

Capacity and Design:

Suitable for a medium to large room, this 1500-watt heater is made in China and weighs a good 16.09lbs, meaning it is sturdy enough to not be easily knocked over but light enough to be moved around. Its swivel caster wheels and carry handle also help this heater be maneuverable. It measures 13.8 x 11 x 25.2 inches and, unlike the heaters we’ve seen so far, has electronic controls. It is also very modern-looking with its black, metal design that would fit in nicely in any modern home.

Programmability and Features:

This oil space heater can be programmed electronically and has three power settings – 700W, 900W and 1500W. The temperature can be programmed on 5 settings ranging from 65°F in 5° increments to 85°F. It also makes use of an eco-mode to save energy. You can also use a basic countdown timer. The remote control is an excellent feature as is the digital LCD display and they both add to its modern style.

Safety-wise, this heater auto restarts after a power outage and has an auto shut off should the unit get too hot. Additionally, there is a tip-over switch to ensure that the radiator switches off if it is not upright. It is important to mention, however, that this heater is hot to the touch when in operation, which is something to be mindful of in family homes.

Other factors:

The Pelonis NY1507-14A has a 6’ cord and operates silently. It comes with a 1-year warranty and is UL listed. You can really rely on this heater, the reviews and average rating speak for themselves. The price of just under $70 is very reasonable given the features that this oil heater has.


  • Excellent value
  • 23 positive features
  • Stylish
  • Digital controls
  • LCD display
  • Remote control


  • Not cool to the touch
  • Not many reviews in comparison with other products in our Top 10


If you’re wanting something with lots of positive features and like your appliances to come with the latest technology, look no further. This oil filled heater has great reviews and people are very happy with it.

A List of 6 Other Products We Reviewed

No 5: Optimus H-6003 Oil Filled Portable Heater

Our pick for portability

This heaters all about being portable and easy to carry around. It is light, has a handy carry handle, and is also quite quiet, do you will be fine having it under your desk at work!

Capacity and Design:

When you’re looking for a portable oil filled radiator heater, you’re usually wanting something lightweight. At 6lbs, the Optimus H-6003 definitely fills this requirement. It is also one of the most compact heaters in our Top 10 and measures 16 x 6 x 15 inches. Although it doesn’t have wheels, it does have a carry handle and its weight means that moving it around is not a problem.

At only 700 watts, this heater is designed for personal use and so would not be suitable for heating anything more than a small room. It operates with manual controls and is made from heavy-gauge sheet metal, which is durable.

Programmability and Features:

Similar to the Costway, this portable heater has a minimum to maximum heat dial to change the heat settings. It does have some assembly required but it is simply a matter of installing the feet. As it is simply designed for personal use, it doesn’t have many of the features of the bigger and more powerful heaters; there is no timer, remote or digital display.

In terms of safety, it is worth bearing in mind that this heater does not have an auto shut-off function or a tip-over switch. It does, however, have a power light so that you can see clearly if it is switched on and it is not hot to the touch, unlike the Costway.

best oil filled heater:

Other factors:

This electric oil heater has over 525 reviews, which puts it in third place for the number of reviews. It does, unfortunately, have the 2nd lowest rating in our Top 10 and scores an average of 3.2 out of 5. Most of the negative reviews relate to its inability to raise the temperature in the rooms they required so it is really worth working out the space you need to heat up. This heater really works best when you’re in close proximity to it such as under a desk to keep your feet warm. The noise won’t disturb your work either so you can carry on working at your desk with cozy toes!

At the time of research, this heater was priced at around $81 but at the time of writing this guide, the price is a much more reasonable $32. It comes with a 1-year warranty and is ETL listed.

Order it on Amazon!


  • Very light and portable
  • Has a carry handle
  • Not hot to the touch
  • Low-noise


  • Low rating from reviews
  • No auto shutoff
  • No tip-over safety feature


If portable is what you’re after but you’re worried about burning your legs or feet under the desk with the Costway, this heater will do the job. Check your space size before purchasing as this is best used as a personal heater under a desk.

No 6: DeLonghi TRD40615E Radiant Heater

Lots of features

This heater is all about the power level and the features. It is a bit on the heavy side, can be noisy, and is a little pricey, but it heats rooms much quicker than others and has a good amount of features.

Capacity and Design:

The DeLonghi TRD40615E is the heaviest of all of the radiant heaters in our Top 10 and weighs a whopping 26.6lbs. It is designed to heat a medium to large space and measures 16.4 x 10.3 x 26.1. Don’t let its weight put you off however as this heater really packs a punch when it comes to warming a room, even a garage. It operates at 1500 watts but has an innovative design that creates more surface area and thus takes less time to heat up your space. It does have a carry handle and wheels for easier maneuverability and is made of a rust-resistant metal meaning it is durable and built to last.

Programmability and Features:

This DeLonghi has the same number of features as our Top Pick but, unlike our Top Pick, has electronic controls, a digital display and a 24-hour timer. It can be programmed to 3 different heat settings (700W/800W/1500W) and also has an eco-mode.

As far as safety is concerned, the TRD40615E has auto shutoff, auto restart and is not hot to the touch. It also has an anti-freeze setting should the room temperature fall too low. It lacks the tip-over feature as seen on our Number 1, however.

Other factors:

If a long cord length is really important to you, then this heater has the longest in our Top 10, with 6’3’’ of cord. There were just over 500 reviews for this product at the time of research, which puts it in 4th position in terms of review numbers. The average consumer rating isn’t as good as some of our other reviewed products and comes in at 3.8 out of 5. Many of the negative reviews outline noise as a factor and it is clear that this is an issue for many consumers. If you’re not intending to use this in a quiet space like an office or bedroom, then this might not be an issue.

This is the 2nd most expensive heater after our Top Pick and costs around $108. It is UL listed and does have a 1-year warranty.

Grab it on Amazon!


  • Heats up quicker than a lot of oil heaters, due to its patented design
  • Long cord
  • Electronic controls
  • Digital display
  • Carry handle
  • Wheels
  • Not hot to the touch


  • No tip-over safety feature
  • Heavy
  • On the more expensive side
  • Noisier than others in our Top 10


If noise and weight aren’t factors that will put you off, this oil heater has a really good amount of features. It’s great if you want quick heat and is really powerful without being hot to the touch.

No 7: NewAir AH-400 Space Heater

slim and light heater

This heater is great if you need it to fit into a tight space. It is small, lightweight and silent. Although it does lack some features, it has simple controls that are easy to design and a nice flat design for easy storage.

Capacity and Design:

Our Number 7 best oil filled heater is the NewAir AH-400, which also falls into the portable category. It weighs 6.45lbs, making it one of the lightest products in our Top 10. This heater has the lowest output at 400 watts so it’s definitely worth noting that this is a heater best designed for personal use only, such as for keeping under the desk.

As well as being lightweight, this space heater has carry handles to aid maneuverability.

Programmability and Features:

The NewAir AH-400 is really simple in its control features. It has only 1 heat setting. There is no timer, remote or eco mode. Safety-wise, it does have auto shutoff and a tip-over setting, but it doesn’t have an auto restart feature or anti-freeze capability and it is hot to the touch.

Other factors:

This heater’s simple design means it only has 10 positive features out of a possible 27, which makes the price of around $58 seem more expensive if we take into account the cost-per-feature.

Review-wise, it had 336 reviews at the time of research and an average rating of 3.7 out of 5, which is on the lower side. For peace of mind, however, it is UL, ETL and Intertek listed and does come with a 1-year warranty.

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  • Silent operation
  • UT, ETL and Intertek listed
  • Simple controls
  • Lightweight
  • Flat design means it can be stored conveniently under a desk or against a wall


  • Lowest power in our Top 10
  • Lowest number of positive features
  • Hot to the touch
  • No auto restart
  • No anti-freeze capability


I like this heater as it is slimmer than many others on our list and can fit into tight spaces. If you’re considering buying this oil filled heater, it is important to consider the output of it as it is not as powerful as many of the other personal-use heaters in our Top 10 and therefore might not heat up your space as efficiently as others.

No 8: Tang Kula 5-Fin Radiant Heater, 1500w

A value option

This heater can’t do as much as some of the other picks, but it is still a reliable heater that comes at a good price.It doesn’t make much noice, isn’t hot to touch and is well-liked by other customers.

Capacity and Design:

At 18lbs and measuring 14 x 10 x 25.6, this is a hefty piece of kit. It is a powerful machine, however, and operates at 1500 watts, making it suitable for a medium to large room. For easier transportation, it does come with wheels and a carry handle.

Programmability and Features:

The manual controls can be set to 3 different heat settings (600W/900W/1500W), but there is no eco-mode or timer. Although it doesn’t have the anti-freeze function of many other heaters in our shortlist, it does have a tip-over switch and is not hot to the touch, making it much more appealing to families and animal lovers.

Other factors:

This oil filled heater fell down in our rankings due to the fact that it has the fewest number of reviews, with only 54 at the time of research. It is definitely worth noting, however, that its average rating is 4.1 out of 5, which makes it one of the best-rated products in our Top Ten. The Tangkula is pretty reasonably priced too at just $41.99! Aside from that, it is capable of providing all the benefits that an oil filled radiator has to do.

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  • Low noise
  • High average rating of 4.1 out of 5
  • Not hot to the touch


  • Only has a 3-month warranty
  • Fewest number of online ratings
  • No anti-freeze feature


This heater has an excellent average rating, which definitely goes in its favor. It is among the cheapest heaters on our list too. Despite it not being amongst the most popular products on the market, it is definitely worth considering if rating and price are what matters most to you.

No 9: DeLonghi Oil-Filled Radiator Space Heater

An average heater option

This heater is another cheap choice. Like other heaters it doesn’t make much noise, and has a nice looking design, but some customers don’t rate it too highly.

Capacity and Design:

This is a pretty sturdy electric oil heater, weighing 21.2lbs that makes it the 3rd heaviest in this Best Oil Filled Heaters Guide. It measures 14.6 x 6.7 x 26 inches and has a power of 1500 watts and so is suitable for a medium to large room. Its pivoted wheels and carry handle make it easier to move between rooms. The black modern design with electronic controls makes this heater a stylish addition to a modern home.

Programmability and Features:

The adjustable thermostat on this heater has 3 heat settings: 600W, 900W and 1500W, as well as an eco mode. The Homeleader also has a 24-hour timer, remote control, and digital display, which adds to its modern look.

In terms of safety features, it is not hot to the touch but it doesn’t restart automatically after a power outage and doesn’t have the anti-freeze feature that many items in this review have.

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  • Rust-resistant metal
  • Low noise
  • Lowest-priced digital heater
  • Black, modern design
  • 1-year warranty
  • 30-day money-back guarantee
  • Lifetime support guarantee


  • Fewest number of reviews in our shortlist
  • Lowest average rating in our shortlist


This heater may suit you if you’re looking for a cheaper, digital option. It is recommended you exercise caution though as you may need to rely upon the warranty and guarantees that come with this heater, should you fall into the unlucky lot whose product stops working prematurely!

No 10: Comfort Zone Oil Filled Heater

A choice for environment

This model has an interesting eco mode, which makes it much more economical than some of the other options we’ve looked at. It lacks some digital functions, but it is a solid and quite heater option.

Capacity and Design:

We’re now at our Number 10 slot and present you the Comfort Zone Oil Filled Electric Radiator Heater. This product weighs a decent 15.8lbs, making it stable enough but not too heavy to move around. It measures 15 x 4.8 x 26.8 inches and has both wheels and a carry handle. It is suitable for a medium to large room, although it is worth noting that it operates at 1200 watts as opposed to 1500 watts like many of the heaters designed to heat this size space.

If the place of manufacture is important to you, then this one is made at home in the USA.

Programmability and Features:

The Comfort Zone operates with 3 heat settings (500W/900W/1200W) and also has a timer and an eco mode, making it much more economical. The controls are manual and it doesn’t come with a remote or digital display, but, if these features aren’t important to you, it doesn’t affect the product.

If we look at safety features, this one incorporates everything except the anti-freeze capability. That is to say, it has an auto-shutoff feature, auto restart feature, a tip-over switch and is not hot to the touch. In short, it has enough features to keep your home warm in the winter.

Other factors:

From its 181 reviews, this product scores a rating of 3.6 out of 5, which is around the average in our Top Ten. It does come with a 1-year guarantee if this rating puts you off and is also ETL listed.

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  • Low noise
  • Has most safety features
  • Made in the USA
  • Timer
  • Eco mode
  • Wheels and handle for easier maneuverability


  • Average rating
  • No anti-freeze capability
  • Not digital


If you are conscious of being an ethical consumer and want to buy something manufactured in the USA, then this is the one for you. It doesn’t compromise on safety and can be moved easily between different spaces.

A List of Other Best Oil Filled Heater We Tested

Oil Heater Maintenance Tips

The great thing about oil filled radiant heaters is that they need almost no maintenance! Because the oil is sealed inside during manufacture, it never needs to be replaced. As long as you keep the heater surfaces clean and dust-free, you shouldn’t run into any problems.

However, it is worth noting a few safety tips no matter the type of heater you use. As oil heaters run on electricity it is important that you follow all operating instructions carefully. For example, it is not recommended using an extension cable with an electric heater as the wiring may not be capable of handling the heater’s load. This is even more important to bear in mind when using an electric oil heater as the electricity is responsible for heating up a substance that is volatile.

Another thing to consider is the risk of leaking, albeit very small. As column heaters are sealed units there should be no oil appearing on the surface of the radiator. However, some people note a small for the first few times they are used. This could be because there are tiny particles of oil present on the radiator from when it was filled, or that the paint used gives off a chemical-like odor. It’s a good idea to test your heater in an area with good air flow and ventilation prior to using it in a small space.

If, however, you choose a poorly-made oil heater you might find it suffers from leaks further down the line. Leaks can manifest themselves in obvious and not-so-obvious ways. A non-obvious leak might mean that oil is seeping just enough to be present on the surface of the heater and therefore cause an unpleasant odor. It is recommended that you check your heater for leaks if you notice a smell. A big leak is very rare and it won’t go unnoticed. Leaks can be quite costly if it means you need to change flooring surfaces in your home so this is certainly something to bear in mind when choosing which product to buy.

Wrapping it Up

Before you go out and buy an oil filled heater, or even try to make one yourself at home, it is best to do some research of your own. This complete guide should have provided you with all you need to know about the best oil filled heater in the current market, as you know that here at The Soothing Air, our Buyer’s Guides are written objectively and without bias.

That being said, it is always wise to read some online reviews yourself to see what others are saying and to get further insight into the product before you buy.

If you’re still undecided after reading all of the reviews in this guide, have a read of our research report. With this, you will be able to see a side-by-side comparison of each product and their different features. Alternatively, depending on your room requirements of course, we consider our Top Pick to be the best oil filled heater and this would be a great choice for any buyer. We’re sure that you’d be happy with the DeLonghi EW7707CM. It has everything you need and the numerous positive reviews and ratings speak for themselves. We hope that this Best Oil filled Heater Guide has helped you in your decision and that your room is warm and cozy soon!

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