7 Best Oil Filled Heaters – Reviews and Buying Guide of 2022

Last Updated on December 6, 2022 by Vernon Scott

Winter can be unforgiving if you are residing in the northern area. In this case, everyone tends to go for oil filled heaters. Even though thousands of brands are trying to advertise their radiators, you have to be tricky to find the best oil filled radiator heaters in 2022.

By conducting research with home heating experts’ help, we have found  top-ratedradiators power by oil. These are very reliable, long-lasting, and produce a decent amount of heat during your coldest nights. Here are our best picks for you:

Top Oil-Filled Heaters 2022 Reviews

1. DeLonghi EW7707CM Oil Filled Heater with Thermostat

DeLonghi EW7707CM Safe Heat 1500W ComforTemp Portable Oil-Filled Radiator

Check More Photos & Price at: amazon.com

DeLonghi is the leader in the market of oil filled room heaters, and their EW7707CM is one of the best investments in the heating system you can make.

With 1500W of power, you can heat medium and even-large sized rooms and areas regardless of how cold it is outside.

The quality of construction is admirable. The assembly is of steel, and the oil reservoir is permanently shut, which means you will never need to refill the unit.

You can adjust the thermostat to make sure the temperature is perfect at any moment or choose one of the three available heat modes – low, medium, and high.

However, you can also the utilize comfort temp technology. Notice the big button on the side of the heater. If you press it, the appliance will automatically optimize the optimal warmth in the room.

2. DeLonghi EW7707CB – Portable Oil-Filled Radiator Heater

DeLonghi EW7707CB Safe Heat 1500W ComforTemp Portable Oil-Filled Radiator Heater - Black

Check More Photos & Price at: amazon.com

This is the exact same model as the previous one with only a difference in color. Unlike the classic silver-gray of the above unit, this one comes in black. You could say that this is a more modern color that fits in to contemporary rooms and areas.

As for the features, you can expect the Comfort Temp button for automatic heat control, thermostat, and 1500W of maximum heat output. Those who are not crafty with their hands will appreciate that they don’t have to assemble anything.

The EW7707CB DeLonghi oil filled heater comes even with wheels pre-assembled. While we are on the topic, let’s mention that it’s easy to move the unit around thanks to the wheels at the bottom. 

Thermal overload protection and anti-freeze feature are also parts of this model, and they extend its durability. The oil reservoir is firmly shut, and the oil will last as long as the heater does.

3. Honeywell HZ-789 

Honeywell HZ-789 EnergySmart Electric Oil Filled Radiator Whole Room Heater

Check More Photos & Price at: amazon.com

It’s easy to make this baby dance as you play because it puts the control in your hands. There is a digital display on the side of the heater that you can use to optimize the heat output.

You can utilize the adjustable thermostat that shows the current temperature at any moment and select between low and high heat settings and energy usage.

Regardless of the settings you choose, HZ-789 Honeywell oil filled radiator heater will work in silence, and it won’t disrupt your activities.

If you want it to turn off automatically, you can utilize the timer that goes up to 12 hours. I tested the unit on a 150-square feet room, and it did an excellent job of heating it. 

The safety features include thermal overload and tip-over protection, as well as a thick power cord. This digital oil filled heater is portable, thanks to the gliding wheels and the handle that enables you to pull it around like luggage.

4. DeLonghi TRN0812T with Timer

DeLonghi TRN0812T Portable Oil-Filled Radiator with Programmable Timer

Check More Photos & Price at: amazon.com

This portable oil filled radiant heater is also made by DeLonghi, but it stands out from other models because of one feature. It is the GFI plug that is integrated into the unit. That makes the heater suitable for areas that are humid, which includes bathrooms and basements.

TRN0812T DeLonghi oil filled space heater delivers 1200W of power, which should be enough for bathrooms and small rooms. This a small oil filled heater and this model is compact and weighs under 20 pounds so don’t expect that it is a suitable heater for large rooms. 

However, it will do an excellent job regardless of the season as it can raise the temperature in a room quickly. The timer is incredibly user-friendly, and you can choose from almost 100 different settings.

For example, you can set when you want the heater to turn on and then when to stop working, and it allows multiple time periods to be established. Thanks to thermal vertical chimneys, the surface remains relatively cool, which makes the appliance safe for children’s rooms.

5. PELONIS Oil Filled Radiator Space Heater


Check More Photos & Price at: amazon.com

Say hello to an oil filled portable heater that has remote control included that can make your life more comfortable. You don’t have to get close to the digital display on the side to adjust the temperature.

You can choose between three different heat modes, including low and high heat and eco settings. The maximum power of the model is 1500W, which is enough for medium-sized rooms.

The timer has five different settings and can be set to a maximum 10 hours. That gives a lot of freedom in adjusting the unit per your taste.

Although it is a radiant heater, the surface stays relatively cool, and it is safe for homes with children or pets. It is ETL listed, and it comes with a warranty for a 1-year period.

Once you heat one room, you can easily move the Hurricane Radiant Heater to another location thanks to the portable wheels. ( Read full review )

6. DeLonghi TRH0715 Oil Radiator

DeLonghi TRH0715 Oil Filled Radiator

Check More Photos & Price at: amazon.com

This is one of the classic DeLonghi models, but it is still equipped with all the features that an oil filled radiator should have. For starters, its quality is admirable.

The steel used for construction is of excellent quality, and the unit has fantastic durability. That is supported by safety features such as thermal overload and anti-freezing protection.

When it comes to heating, 1500W of power is more than enough to heat a room of around 200 square feet. (Read detail review)

Of course, since this is a radiant heater, it is advisable to put it somewhere near the center of the room you are heating. You shouldn’t worry about anyone burning their hands – the patented thermal slots keep the surface cool while maximizing heat flow.

The controls are on the side of the heater, and they include several heat settings and an adjustable thermostat. Regardless of the mode, this Delonghi oil filled radiator heater is almost noiseless.

7. DeLonghi TRD40615T Full Room Radiant Heater

DeLonghi TRD40615T Full Room Radiant Heater

Check More Photos & Price at: amazon.com

This is one of the newer DeLonghi models, and it comes with some bells and whistles you might like. For starters, it has a timer that can be set for up to 24 hours.

TRD40615T also comes with remote control included, which gives you total control of heating from your chair or bed.

The durability of DeLonghi units is unquestionable. This one is also made of steel, and it has anti-free and thermal overload protection features.

When it comes to heat output, it’s pretty much standard with its 1500W of heat. Thanks to maximized heat flow and a large surface, it can do an excellent job in heating rooms of up to 250 square feet. 

You don’t have to go through the trouble of assembling this unit as it comes pre-assembled. The patented DeLonghi SmartSnap wheels make moving the model around simple as ABC. The unit weighs almost 25 pounds, but the handle is there to help you with transport.

 Oil Filled Radiator Heater Buyer’s Guide

You can find hundreds of different oil space heater units on the market these days. It doesn’t come as strange then that you are having trouble choosing a suitable model for you. Take a look at these tips and make your purchase a piece of cake:

Bring the Power

The first thing to keep in mind is the potential heat output of your heater. The wattage is what determines its strength. This can vary from 500W to as high as 3000W. The capability of heating a room increases with the potency of a heater. Aside from that, you should also consider its size.

Oil filled heating appliances are radiant devices. That means the surface of the heaters emits the heat. Therefore, large-sized heaters have better capability to warm up space around it.

…and Then Put It under Control

It’s nice to have sheer power and abundance of heat, but it is crucial to be able to tailor it any way you want. That is why options for heat settings are equally important as the strength of the heater.

Most of the oil filled heating appliance has several different heat settings. For example, a standard 1500W heater might have three functions – low (500W), medium (1000W), and high (1500W).

The option to choose the heat output helps you find the perfect temperature for your room. However, it also enables you to maximize the oil filled heater efficiency and decrease overall running costs.

Can You Move It Around Easily?

The majority of oil filled heaters available on the market today is portable. However, don’t think that you can pick them up and take them to the other room just like that. These heating appliances are heavier and bigger than other types of heaters.

That is why they are equipped with casters that enable them to mobility. If you want to use the unit in multiple positions, we suggest looking for a model that has durable wheels and can be moved around quickly.

Stay on the Safe Side

Safety features should also be your primary concern when choosing an oil radiator heater. The standard additions should include tip-over safety and thermal overload protection.

You should also pay attention to the edges because they are sharp in some models. Look for units with rounded corners to ensure that they are not a threat to anyone, particularly pets or children.

Read the Warranty Info

If the manufacturer offers a warranty on the product, it is an indicator that they trust in their creation. It really is that simple. That is why you should always read the warranty info. It should guarantee that everything will work properly for at least a couple of years, although some manufacturers provide even 10-year warranties.

Is It Pretty?

The last thing to consider, but it’s not the least important. You don’t want to buy an ugly model that will disrupt your home decor completely. Instead, you want to find a model that is visually appealing and contributes to the overall design of the room.

How Does They Work

Although it is self-explanatory, a lot of people still fail to understand how oil burning heater works. Let’s try to solve all dilemmas and offer an explanation of oil heater system.

If you take a look at one of these heating appliances, you will see that they have several metal columns. The oil can spread freely across these columns, and that is the basic mechanism of the oil filled heater. 

If you take a look at the base of the unit, you will find a heating element there. This component is in charge of warming up the oil.

The hot oil then flows throughout the unit and spreads the heat. Next, pay attention to the fact that there is a cavity after each metal column. That is how warmth can be radiated through a larger surface, and that increases the efficiency of the product. 

The common misconception is that these heaters don’t need electricity to work. That is not true. They need to be plugged into a power outlet to start the heating process. The energy is then used to heat the base of the heater, which in turn warms up the oil. 

These are the basic steps of the oil filled space heater mechanism:

  1. Electricity heats the warming element at the base.
  2. The warming element heats the oil.
  3. The oil uses convection to transfer heat to the metal wall and conduction to pass the warmth through multiple walls.
  4. The air is heated via radiation and convection, and that is how the temperature in the room increases.

Keep in mind that oil is not used as fuel. That doesn’t mean that you are required to replace it every now and then. In fact, you don’t have to change it at all. As long as everything works correctly, the oil volume will be at the same levels for years.

Oil Heaters – FAQ

I’m sure you have a lot of questions hanging about oil radiant heaters. Let’s take a look if I can answer some of them immediately:

How Much Does It Cost To Run?

It’s hard to give a definite answer as it depends on the amount of time you leave it on and the heat settings you choose. However, if you use standard heat settings for three or four hours a day, a single oil filled radiant heater probably won’t cost you more than $50 a month.

More reading: Do Space Heaters Use A Lot Of Electricity?

Can You Get Carbon Monoxide Poisoning from Oil Heaters?

An oil filled electric heater burn oil. Instead, it only uses it to distribute heat. Therefore, it doesn’t produce carbon monoxide, and there is no danger of getting poisoned.

Are These Heaters Expensive to Run?

It depends on how long you keep them on, which settings you use, and what your definition of expensive is. However, with the right usage, oil heaters can be extremely efficient and affordable to use.

Are They Energy Efficient?

Yes, they are nothing but energy efficient. In fact, more than 99% of the electricity produced goes directly into the heat, and there is no energy wasted. Aside from that, if you compare the heaters to a regular furnace, it utilizes far less power. Add to that the fact that you can quickly move the unit from one location o another and you get a unit that is worth investing.

How Much Does It Cost to Run a 500W Oil Filled Radiator?

There is a simple calculation that you can use to find this information:

Power (kW) X Running Time X Electricity rate = Price

Power is nothing else than your heater’s wattage expressed in kW. So, if you use a 500W heater, that would mean it utilizes the power of 0,5kW (1,000W = 1kW.)

Running time is an average amount of time per day/week/month you use your heater. Let’s say that you use it for three hours per day. As for the electricity rate, you might need to look at your utility bill to find this piece of info. Let’s say for this example that it is 0.122kW/h.

So, the equation for a 500W oil filled radiator would be:

0.5 x 3 x 0.122 = $0.183

That means you would be paying $0.183 daily for running your heater as long as you use it three hours per day at the 500W settings.

What Is Better Oil Heater or Electric?

Both options can do a solid job in heating up the room. Electric heaters tend to be lightweight because they use only electricity to warm up the area around them. As such, they tend to be noisy, and they cool down quickly if you unplug them. 

Unlike that, oil heaters need a bit longer to warm up, but they can remain hot for a while even if they are not plugged into a power outlet. That enables them to be more efficient than electric heaters and decrease your utility bills. 

Do These Radiators Use a Lot of Electricity?

It depends on the settings you are using, but if you compare to other radiator types, the answer is no. Almost 100% of the electricity they are consuming transfers into heat. On top of that, they remain hot for a while even after you unplug them.

Why Do Oil Filled Radiators Smell?

You might notice an odor coming from the heater. This can happen because a tiny portion of heating oil somehow ended up on the surface. Alternatively, the smell comes from paint coating. Either way, the odor should disappear after several hours of using the product.

Oil Filled Space Heater Safety Tips

Unfortunately, heating appliances were the causes of some accidents and fires in the past. That is why you should always remember that safety should be the number one priority in dealing with oil filled heater units. Here is what you should know:

Never Leave It Out of Sight

You need to be in the room and keep your heater insight while it is working. Leaving the house or falling asleep is not an option. Heating appliances are safe by default, but you never know when things can go wrong. 

You might think that everything is going to be okay because the heater has a thermostat or you set a timer for it to turn off in an hour. However, you shouldn’t play with safety because if anything goes wrong and you are not there, your house might get burned down.

Heaters Are Not Toys

In other words, keep your kids away from heating appliances. The surface of oil filled radiators becomes cool to the touch when it is working. If a child places its hand on it, they might burn themselves. The same goes for pets, which don’t know that they shouldn’t get too close or they risk an injury.

That is why you should ensure that you place a heater in a safe area and far from children or pets. If you think that you can explain to your children that they shouldn’t go close to the unit, now is the time to do so.

Otherwise, make sure that you are around to prevent them from getting too near to the device.

Carefully Choose the Location

You don’t want to risk someone accidentally bumping into the heater while they are walking from one room to another. And you particularly do not want people to trip over the heater’s cord.

That is why you don’t want to place your unit anywhere near the doors, and you should also avoid “high traffic” areas. Instead, find a spot that there is no risk somebody will bump into the heater or trip over the cord.

Avoid Extension Cords

An oil filled heater needs its own power outlet. According to professionals, using an extension cord is not a smart move.

Aside from potential issues with electricity, you increase the possibility of someone tripping over the cable. It might be acceptable to use a 14-gauge thick cord, but it’s still the best option to plug the unit directly into the wall.

Final Note

This article provided you with a list of the best oil-filled heaters on the market. It also gave you basic pointers about what you should consider when purchasing a radiator. We answered several questions that are bothering most people when it comes to oil filled heaters. 

I hope that you know everything you wanted about the topic at this point. If you have a question hanging, don’t hesitate to contact me. Otherwise, I would suggest ordering your favorite model immediately so that you can enjoy the warmth of your home as soon as possible!

I am a Trained HVAC Technician and Author of EmiNick. I have been in the industry for over 10 years and have gained a wealth of knowledge and experience. I have been involved in all aspects of HVAC, from design and installation to repair and maintenance. I am also a certified energy auditor and have experience in conducting energy audits for both residential and commercial customers. In addition to my HVAC experience, I am also a certified home inspector and have conducted many home inspections for both buyers and sellers.

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