Best Oil Heaters

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Depending on where you live, an efficient heating system is imperative to enjoying the colder months. Finding the ideal way to heat your home may seem like a momentous task with all the options out there. But among these options, an effective and cost-saving method of heating your home is using oil filled heaters. 

These function by heating the oil within the casing, which in turn, heats the surrounding air. Oil heaters are energy efficient and are preferred by many because of the savings on heating bills. They’re also relatively easy to install and use without a professional.

Deciding on the best oil heater to buy isn’t easy. Great products have been introduced on the market, and one is spoiled for choice. This guide reviews today’s best products, which have left an indelible mark on many customer’s lives. 

From the products reviewed, our favorite is the PELONIS Oil Filled Heater. This product offers excellent value at an affordable price.

Our Picks for Best Oil Filled Heaters

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Reviews of the Best Oil Heaters

1. PELONIS Oil Filled Heater — The Best Value on the Market

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Our favorite product on the list has an efficient heating system. It’s configured to offer three heating options — including 900 and 1500 watt modes — and five temperature settings — 65, 70, 75, 80, and 85 degrees Fahrenheit options — to enable the user to select customized heating preferences. This can be done by employing the intuitive LCD screen and the adjustable thermostat

This oil-filled heater was designed for portability. A four-swivel wheel setup enables 360-degree rotation. This ensures you can move your heater from one room to another without breaking a sweat. 

A remote control is included to provide a safe method to control the heating. Other safety features include the power indicator light that informs you when the light is on and an integrated overheat protection feature that prevents damage from occurring to the heater from overheating. In addition, a tip-over safety mechanism switches off the heater if mistakenly knocked over. 

Oils, in place of fans, are used to heat the room; this enables whisper-quiet operation. No one wants an annoyingly loud device, as they aren’t conducive to sleep or work. Both warmth and quietness are offered by the heater, which allows you to focus in a comfortable environment. 


  • Relatively cheap. 
  • Offers customized settings.
  • Quiet operation.
  • Special safety features.


  • The thermostat lacks accuracy.
  • Only a one-year warranty offered. 

2. Aikoper Space Heater — Safest Oil Heater for home

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Just like many other products, this oil heater comes with the standard safety features: a tip-over mechanism and an overheat switch function. In addition to this, the heating element is permanently sealed inside the heater, eliminating the risk of inflammation. A patented anti-freeze mode is included to aid in the prevention of frozen pipes. 

But more importantly, for parents, there’s a children’s lock function that prevents children from changing the heat setting and potentially harming themselves. 

The three heat settings — 600, 900, and 1500 watt — offer versatility. The ECO mode is better suited to medium to large-sized rooms that require a consistent provision of heat. A decently sized LCD displays vital information and makes the product easy to use. 

The oil heater is remote controlled and includes a 24-hour timer that enables you to set different temperature outputs for corresponding parts of the day. 


  • Compelling safety features. 
  • Relatively affordable.
  • LCD display included. 
  • Great power output. 


  • Takes much longer than other products to heat up. 
  • The thermostat is not always exact.

3. NewAir Oil-Filled Space Heater — Quietest Oil Heater

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Your entire room — up to 12 by 13 feet — will be warmed up using the handy ECO mode of the NewAir Oil-Filled Heater. This ensures you save on your electricity bills, as the entire device provides maximum output while minimizing power inefficiencies. It also has seven fins that provide consistent and regulated heating. 

The device provides a silent operation. The well-designed space heater employs diathermic oil in its radiating fins to emit heat without being noisy. 

The intuitive remote control allows you to switch effortlessly between three heating modes, and the LCD display ensures you monitor your energy usage while allowing you to easily increase or decrease the temperature output in 5-degree increments. 

The slim profile of the heater ensures it’s lightweight and compact, allowing for easy storage during the warmer months. Weighing only 19 pounds and featuring easy-glide casters, the heater can be considered to be extremely portable. 


  • Lightweight and compact.
  • The operation is almost silent.
  • Energy-efficient.
  • Intuitive user interface. 


  • Remote could be better. 
  • Controls are challenging to understand.

4. DeLonghi TRD40615E Full Room Radiant Heater — Best Premium Oil Heater 

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This oil filled radiator heater from DeLonghi is a durable and reliable product. It’s designed to be maintenance-free, allowing smooth operation at no cost after the initial purchase. The patented, stainless-steel casing and the permanently-sealed oil repository doesn’t require refilling, which is convenient.

Radiant heat is produced by this device. It has a maximum output of 1500 watts, which is delivered in a whisper-quiet manner. The adjustable thermostat offers personalized heating settings and contains a safety feature that automatically shuts down the device if it gets too hot. 

The design of this heater is visually captivating. It doesn’t look like the usual oil filled radiators produced by generic brands. The absence of the usual thermal slots is immediately noticeable. In place of them, the oil heater is designed to have a complete form that resembles a rectangular prism. 

These unique thermal slots aren’t only for aesthetics, but function too. They have been designed to maximize heat flow while having a regulated low surface temperature. 


  • Well-designed. 
  • Low surface temperature. 
  • Overheating safety feature. 
  • Great build quality.


  • Pricier than regular oil heaters for home use. 
  • It only offers a one-year limited warranty. 

5. Honeywell HZ-789 — Best Compact Oil Heater 

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The design of this product includes an integrated EnergySmart technology that makes it energy-efficient, saving you money on your electricity bills. The entire room is made warm by this compact and powerful oil heater, without spending big bucks on power.

Digital EasySet Controls are featured. These enable a one to 12-hour timer, which, when paired with the thermostat, delivers three heating modes. With the timer, you can set your heating preferences at selected times of the day. For example, you may want the oil heater to be at its warmest during the night and early morning hours while being slightly cooler at midday. 

Safety and mobility have been a priority in the design of this product. An ergonomically designed handle and near-frictionless wheels ensure this heater is portable. The safety features include a tip-over mechanism and thermally insulated wiring. 

Unlike the previously reviewed product, the Honeywell HZ-789 is accompanied by a three-year limited warranty. Products that are involved with heating are usually very hard to offer a guarantee. Heat, especially if uncontrolled, can damage components of such products. Because of this, a warranty like the one featured in this product is a compelling value proposition. 


  • Three-year warranty. 
  • Compact and portable. 
  • Thermally insulated wiring. 
  • Suitably priced.


  • Digital controls seem very cheap.
  • Wheels are not the best quality.

6. COSTWAY Oil Filled Radiator Heater — Best Budget Oil Heater 

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Like many of the pricier products featured on our list, this oil filled radiator is quiet and portable. This is enabled by both the low noise design and medium-sized handle. Usually, at lower price points, the function is compromised. Thankfully, this isn’t the case with the radiator heater from Costway. 

The product has a maximum output of 700 watts. This may not be as impressive as the 1500-watt outputs from other products on our list, but it’s sufficient to provide heating for small to medium-sized rooms. 

Maintenance costs and durability are definitive factors when choosing the best oil filled space heater. This particular heater is, surprisingly, made of high-quality materials. It’s equipped with seven robust heat sinks that regulate heat to prevent damage. It also comes with permanently sealed oil, which avoids the hassle of constantly refilling. 


  • Budget-friendly.
  • Made with high-quality materials considering the price.
  • Permanently sealed oil. 
  • Seven mini heat sinks included. 


  • No LCD to display temperature. 
  • Only 700-watt output.

Buying Guide: How to Choose the Best Oil Filled Space Heater

best oil spaced heater

Heating Capacity With Regards to Room Size 

When looking at the best oil filled radiators to buy, you must consider the room you wish to use it in. If the room is large, then you must opt for a larger oil heater. These usually have a much higher output than smaller ones but are also more likely to be expensive. A heater that can function well on a 1500-watt output is, in most cases, sufficient for a medium to large-sized room. 

But if this isn’t the case, you must accept the fact you may have to buy multiple heaters and position them at different ends of a room. 

Energy Efficiency

Paying attention to the amount of electricity your electric heater will use is essential in determining whether it’s a great fit for you. Naturally, since we now live in a climate-change conscious world, using more energy than is necessary should be avoided at all costs. Even if that may include buying a more expensive product — the money you save after purchase will justify the price.

Oil filled heaters are more efficient than exposed-element heaters since the heat energy generated is transferred into the oil instead of being lost throughout the room. Find a good balance between the power you’re comfortable using and the heat you require for your room.

Power and Wattage 

The general range of oil filled heaters is between 700 to 1500 watts. More watts translates to more heat produced. But this doesn’t mean you will feel warmer than you would with an oil heater with less power. The definitive factor here is efficiency. 

Even though more power is produced, some oil heaters are inefficient, and all that energy is lost to other things, like sound energy, for example, if your heater is noisy. For better comfort, your heater must have sufficient power and good efficiency. 

The only way to discover the efficiency of a product is to trust the manufacturer’s claims. This is why you should only buy from reputable brands. 

Noise Level

Oil-filled space heaters produce considerably less noise than other types of heaters. But sound can be produced from the clicking of either the thermostat or the electrical element. This can be annoying and prevent people from sleeping. 

To avoid this, manufacturers have included sound insulation. This means the heater is essentially silent when operating. 

Timer Settings

Being able to turn your oil filled heater on or off automatically at certain times of the day is now standard in high-end products. This feature is very handy and is usually carried out by remote control. This also aids in reducing your electricity consumption because the timer designates periods during the day when your heater will be off. 


What Price Range Is a Good Air Oil Heater?

In our opinion, a good oil filled radiators usually start from 100 dollars and upwards.

Should I Buy a Second-Hand Oil Heater?

No. Avoid this. It’s difficult to determine energy-efficiency when a product isn’t brand new.

Which Rooms Should I Have My Oil Filled Heater in If I Only Have One? 

Get a portable heater that you can move around depending on which room you’re using. Rooms that are closer to the kitchen are usually warmer than others because of the heat produced by the stove. 


The detailed guide has hopefully convinced you of why oil heaters are a compelling alternative to standard heating systems. The PELONIS Oil Filled Heater is the best oil filled heater that also offers value for money. 

But that doesn’t mean it’s the best product for everyone. Other people may prefer cheaper options, such as the COSTWAY Oil Filled Radiator Heater, or products that offer something different, like being more stylish, such as the DeLonghi TRD40615E.

Whatever you decide to buy, ensure you help protect the planet by having an energy-efficient oil heater.