Comparison: Best Space Heater Oil (Updated | Dec 16th)
When winter’s chill seeps through your windows, a reliable oil-filled space heater becomes your cozy companion. These silent powerhouses radiate consistent warmth without drying out your room’s air, making them perfect for overnight comfort or all-day heating. We’ve tested and compared the top oil-filled heaters to bring you honest insights on performance, safety features, and value.
Editor’s Choice
Best for a specific purpose
- Best for comforttemp efficiency: De’Longhi Oil filled Radiator Heater
- Best for advanced digital control: De’Longhi Dragon Digital Oil Filled Radiator Heater
- Best for rapid gentle warmth: PELONIS Radiator Heater for Large Space
- Best for volcano thermal vents: PELONIS Oil Filled Radiator
- Best for budget-friendly reliability: Amazon Basics Portable Oil Radiator Heater for Indoor Use
- Best for quiet energy saver: PELONIS Radiator Heater for Large Space
- Best for 360Β° whole-home warmth: Dreo Oil Filled Radiator
- Best for dual knob control: Dreo Radiator Heater
- Best for compact silent heater: Tangkula 700W Portable Space Heater
- Best for quiet mobile heating: Dumos Oil Filled Radiator Heater with Adjustable Thermostat
Product Comparison: Best Space Heater Oil
ComfortTemp Efficiency
De’Longhi Oil filled Radiator Heater, 1500W Electric Space Heater for indoor use, portable room heater, Energy Saving, full room like office and bedroom with safety features, EW7707CM
De’Longhi
- Simple Controls allow you to easily adjust power level and temperature.
- Up to 20% more efficient* deploy the ComfortTemp feature to automatically maintain the optimal temperature and power levels. *versus using the same unit thermostat at max setting without ComfortTemp
- Exclusive thermal slot design maximizes heat flow into the room while maintaining a low surface temperature
- Better Heating- delivers gentle heat minimizing dry air, creating a better breathing environment that is more allergy friendly with no fan to stir up dust, pollen and dander.
- Integrated handle and control panel allow you to easily operate and relocate your heater during or after use.
- No Installation Required: A comfort hold handle paired with exclusive smart snap wheels, built-in for convenience, provide out-of-the-box easy movement from room to room as needed.
- 1500 watts of Long lasting, quiet heat for small to medium spaces
- Built-in Safety Elements: Thermal cut-off, fully enclosed heating elements, and gently rounded design. Additionally, when the temperature dips below 41 degrees F (5C), the Anti-freeze setting automatically switches on the heater
- Durable & Low Maintenance: High quality steel assembly and permanently-sealed diathermic oil reservoir never needs refilling. A specialized multilayered painting process provides a complete, corrosive resistant finish.
- Lower Energy Bills- heat only the room you’re in
Advanced Digital Control
De’Longhi Dragon Digital Oil Filled Radiator Heater, 1500W Electric Space Heater for indoor use, programmable timer, Energy Saving, full room heater with safety features TRD40615E
De’Longhi
- Digital control panel with LED display for easy selection includes all the available functions and 24 hour timer.
- De’Longhi Exclusive: 75% more radiant surface area than RadiaS due to unique design*- the more radiant surface= the more heat transferred to you and your environment
- Quick Heat Up: Warm air is rapidly distributed thanks to the increased convection heating effect and exclusive battery design.
- Better Heating- delivers gentle heat minimizing dry air, creating a better breathing environment that is more allergy friendly with no fan to stir up dust, pollen and dander.
- Integrated handle and control panel allow you to easily operate and relocate your heater at any time during or after use.
- Exclusive ECO Plus feature optimizes energy consumption by regulating power flow and temperature to efficiently manage your comfort
- Ergonomic Portability: Enjoy easy movement from room to room thanks to ergonomic front and rear handles Exclusive Smart Snap wheels require no installation and are rubber coated for smooth transition between surfaces.
- 1500 watts of Long lasting, quiet heat for small to medium spaces
- Built-in Safety Elements: Important safety features include child lock and a thermal cut-off function that turns off the machine in case of overheating. Additionally, when the temperature dips below 41 degrees F (5C), the Anti-freeze setting automatically switches on the heater
- Durable & Low Maintenance: High quality steel assembly and permanently-sealed diathermic oil reservoir never needs refilling. A specialized multilayered painting process provides a complete, corrosive resistant finish.
Rapid Gentle Warmth
PELONIS Radiator Heater for Large Space, Electric Oil Filled Radiator, Dual Knobs, 1500W, Quiet Space Heater, 3 Modes, Tip-over Protection
PELONIS
- ππππ π―ππππππ, π³ππππππ πͺππππππ: The 1500W power heats the whole house rapidly and the hot air circulation delivers long-lasting and gentle warmth which avoids dryness in winter, making PELONIS oil heater your best choice
- π¬πππππ π¬ππππππππ: Equipped with 3 heating modes 600W/900W/1500W, which can also be used in combination to help save energy bills in winter
- πΎππππππ-πΈππππ: Lacking of fan construction, PELONIS oil heater is super quiet, perfect for bedrooms, offices, rooms and other indoor places where not fan of noise
- πͺππππππππππππ πΊπππππ: Power indicator light lets you know the unit is ON, built-in safety, over-heat protection and tip-over safety switch shuts heater off if accidentally knocked over
- π·πππππππ π«πππππ: 4 heavy-duty universal casters and the front carrying handle make it easy to satisfy your needs of heating different rooms
Volcano Thermal Vents
PELONIS Oil Filled Radiator, Electric Space Heater for Indoor Use Large Room with Thermostat & Remote, 3 Modes & 3 Heat Settings, ECO Mode, 24H Timer, Quiet, Overheat & Tip-Over Protection, 1500W
PELONIS
- Whole House Warmth: 39.5% increase in heat dissipation area comes from 108 Volcano thermal vents, delivers 2X heating efficiency for your entire home. Boasting powerful 1500W, it can warm up spaces of up to 255 sq.ft, providing unparalleled comfort and warmth
- 3 Tailored Modes: Drawing from years of consumer feedback, PELONIS have developed ECO mode, Sleep mode, and Memory mode. ECO mode saves up to 40% of energy, making it a budget-friendly option for your winter bills. Sleep mode adjusts to your body’s natural sleep patterns, ensuring optimal comfort throughout the night. Memory mode automatically saves your preferred temperature settings, eliminating the need for constant adjustment
- Precise Temperature Control: Customize your warmth with 3 setting (600W/900W/1500W) and adjustable thermostat with smart ECO mode which allows to fine-tune the temperature from 41-95β, in 1 increments.
- Whisper-Quiet: With no fan structure, as low as οΌ5dB noise making it ideal for bedrooms
- Advanced Safety: Built with tip-over protection, PELONIS Oil-filled heater is made of V0 flame retardant materials, will automatically shut off when overheat, defense against any potential accidents and ensure family’s safety, also equipped with child lock
Budget-Friendly Reliability
Amazon Basics Portable Oil Radiator Heater for Indoor Use, 3 Heat Settings, Over-Heat Protection, ETL-certified Safety, 7 Oil-Filled Steel Fins, 1500W, 11″D x 14.8″W x 25.2″H, Black
Amazon Basics
- POWERFUL & ADJUSTABLE HEATING: Offers three heat settingsβHigh (1500W), Medium (1000W), and Low (600W) – allowing you to customize the warmth to your comfort level.
- LONG-LASTING RADIATOR HEATING: Features seven oil-filled fins that deliver consistent, long-lasting heat, even after the heater is turned off, ensuring efficient energy usage and keeping rooms warm for longer. Heats up to 144 sq ft.
- QUIET OPERATION: Enjoy a peaceful environment with no fan noise – perfect for bedrooms, living rooms, and offices.
- ETL CERTIFIED SAFETY FEATURES: Includes tip-over protection and overheat protection, automatically shutting off the heater to prevent accidents and ensure worry-free use.
- PORTABLE & EASY-TO-MOVE: Equipped with smooth-gliding caster wheels and a convenient handle, making it easy to transport the heater from room to room.
- SPACE-SAVING DESIGN: Its vertical, slim profile fits seamlessly into any room without taking up much space, ideal for tight areas.
Quiet Energy Saver
PELONIS Radiator Heater for Large Space, Electric Oil Filled Radiator, Dual Knobs, 1500W, Quiet Space Heater, 3 Modes, Tip-over Protection
PELONIS
- ππππ π―ππππππ, π³ππππππ πͺππππππ: The 1500W power heats the whole house rapidly and the hot air circulation delivers long-lasting and gentle warmth which avoids dryness in winter, making PELONIS oil heater your best choice
- π¬πππππ π¬ππππππππ: Equipped with 3 heating modes 600W/900W/1500W, which can also be used in combination to help save energy bills in winter
- πΎππππππ-πΈππππ: Lacking of fan construction, PELONIS oil heater is super quiet, perfect for bedrooms, offices, rooms and other indoor places where not fan of noise
- πͺππππππππππππ πΊππππ?: Power indicator light lets you know the unit is ON, built-in safety, over-heat protection and tip-over safety switch shuts heater off if accidentally knocked over
- π·πππππππ π«πππππ: 4 heavy-duty universal casters and the front carrying handle make it easy to satisfy your needs of heating different rooms
360Β° Whole-Home Warmth
Dreo Oil Filled Radiator, Electric Radiant Heaters for indoor use Large Room with Remote Control, Child Lock, 4 Modes, Overheat & Tip-Over Protection, 24h Timer, Digital Thermostat, Quiet, 1500W
Dreo
- 360Β° Whole-Home Warmth: Dreo radiator heater delivers swift and silent heating at 1500W, boosting efficiency by 92.3%. Its 7 advanced fins outpace competitors by 39.49% in heat dispersion. Stay cozy with rapid, quiet, and even warmth.
- Peaceful Safety: Dreo oil filled heater ensures peace of mind with triple overheat protection, fire-resistant material, and ETL listed. Tilt protection, burn-proof plug, and 7-layer safety checks secure your haven.
- Personalized Comfort: Set your ideal temperature with eco mode. Dreo’s precise sensor and smart algorithms maintain steady warmth, eliminating temperature fluctuations. Enjoy your comfort wherever you are in, like bedroom, office or living room.
- Energy Efficiency: Choose from 600W/900W/1500W modes, plus eco mode for tailored power use. Dreo electric heater optimizes real-time energy consumption, saving on bills and resources.
- User-Friendly Design: Navigate with ease using the large LED display, touchscreen, or remote control. Dreo glides effortlessly with large wheels and handles for room-to-room warmth. Child lock, mute, and screen-off modes cater to home use. With a 24-hour timer, Dreo radiant heater welcomes you with pre-heated comfort.
Dual Knob Control
Dreo Radiator Heater, Dual Knobs, 8 Safety Protection, 1500W Electric Space Heaters for Indoor Use Large Room, Energy Saving, Quiet Oil Filled Radiator for Bedroom, Adjustable Thermostat
Dreo
- Heat the chill away: With 1500W and a 92.3% heating boost, this radiator heater for indoor large room fills every inch with warmthβfast and steady comfort that never misses a spot.
- All-around Heating: With 7 M-shaped fins and 39.5% more heating area, this radiator heater delivers even, wall-to-wall warmth in your bedroom or living room, no cold corners left.
- Dual knobs, big savings: Adjust heat (600W/900W/1500W) and temp with dual knobs on this oil filled radiator heater. Built-in auto thermostat cuts energy use by up to 60%.
- Worry-free warmth: With 8 protections like auto temp limiter, tip-over shut-off, V-0 flame retardant, this ETL-listed DREO oil heater lets you enjoy warmth with full peace of mind.
- No Fan, No Dryness: Enjoy undisturbed sleep or focused work, DREO fanless oil heater for indoor use heats silently and gently, keeping your space cozy without drying out winter air.
Compact Silent Heater
Tangkula 700W Portable Space Heater, Oil-Filled Radiator with Adjustable Thermostat, Overheat Protection, Electric Heater for Home, Bedroom, Indoor Use
Tangkula
- Simple Temperature Adjustable System: Comes with a simple-to-operate temperature adjustment knob to conveniently set your preferred and comfortable temperature, our 700W oil-filled heater can efficiently achieve a large area of uniform heating of the entire indoor space.
- Fast Heating & Maintenance Free: The heater has seven oil-filled fins that are permanently sealed with diathermic oil (never needs refilling), the unitβs heating elements heat the oil to deliver 360-degree convection hot air to quickly and effectively heat large and medium-sized rooms, and maintain continuous heat storage without loss.
- Multiple Safety Protection: Built with multiple safety features include flame-retardant shell material, sealed heating element, overheating protection sensors for safer operating conditions, which could eliminate any risk of burning and accidents.
- Power Saving & Silent Operation: The oil-filled heater features user-friendly ECO mode that can adjust the room temperature and heat settings automatically to optimize energy consumption and save your energy cost. The noise of this heater is lower than 45 db, ensuring a quiet enough environment to work and sleep.
- Convenient and Portable Design: The heater is equipped with an easy-carry handle for easy movement, creating a warm environment for you and your family in the cold winter. Compact size makes the electric heater ideal for indoor use such as office, desk, bedroom, living room, anywhere as you need.
Quiet Mobile Heating
Dumos Oil Filled Radiator Heater with Adjustable Thermostat, 1500W Oil Space Heater for Indoor Use, Portable, 22inch Bright Black
DUMOS
- Dumos 1500W Oil Filled Radiator Heater provides fast and efficient heating, quickly warming up spaces of 10-15γ‘βideal for bedrooms, offices, and other medium-sized rooms.
- Energy Efficient with 3 Heat Settings: This Dumos oil heater offers 600W, 900W, and 1500W modes with a adjustable thermostat (from -5 to 60Β°C), helping reduce electricity costs during winter while maintaining comfortable warmth.
- Safe & Reliable Operation: Equipped with a power indicator light, overheat protection, and a tip-over safety switch, this radiator heater automatically shuts off when accidentally knocked over, ensuring peace of mind.
- Easy Mobility with 4 Heavy-Duty Casters: Designed with four universal wheels and a convenient carry handle, the Dumos oil-filled radiator heater can be effortlessly moved to heat different rooms based on your needs.
- Ultra-Quiet Heating: Thanks to its fanless design, this oil heater for indoor use operates silently, making it perfect for noise-sensitive environments like bedrooms, offices, or any indoor space where tranquility is important.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Buying Guide
FAQs
What is an oil-filled radiator and how does it work?
An oil-filled radiator uses diathermic oil sealed inside its fins to generate heat. An electric element heats the oil, which then circulates through the unit, warming the metal fins to radiate heat into the room. This process provides long-lasting, consistent warmth even after the heater is turned off.
What are the main advantages of an oil-filled heater over other types?
Their primary advantage is energy efficiency and quiet operation. They retain heat for a long time, allowing them to cycle on and off less frequently than ceramic or infrared heaters. This makes them ideal for providing steady, background warmth in a room for extended periods.
How do I choose the right size heater for my room?
Check the heater’s wattage rating, which typically corresponds to the square footage it can effectively heat. A common guideline is to use about 10 watts of heating power per square foot. For larger or poorly insulated rooms, it’s better to choose a model with a higher wattage for optimal performance.
What key features should I look for when comparing models?
Look for essential safety features like overheat protection and a tip-over switch. Adjustable thermostats and multiple heat settings offer better control over temperature and energy use. Additional conveniences such as a 24-hour programmable timer and wheels for easy portability are also highly valuable.
Are oil-filled heaters safe to use, especially overnight?
Yes, modern oil-filled heaters are generally very safe for overnight use. They have a low surface temperature compared to other heaters, reducing the risk of burns. Always ensure your model has built-in safety certifications like UL or ETL listing, and keep it clear of flammable objects like curtains or furniture.
How do I determine the best value for my money?
The best value isn’t just the lowest price but a balance of cost, features, and energy efficiency. A slightly more expensive model with a programmable timer can save you money on electricity in the long run. Consider the warranty as well, as a longer warranty indicates greater manufacturer confidence in the product’s durability.
What is the difference between a radiant and a convection oil heater?
Most oil-filled heaters are convection heaters, warming the air in the entire room over time. Some models may have a more focused radiant element, which provides more immediate warmth to objects and people directly in front of it. For general room heating, a convection model is typically the best choice.
How much maintenance does an oil-filled heater require?
They are very low-maintenance because the oil is permanently sealed and never needs to be refilled. Periodically, you should wipe down the unit with a soft cloth to remove dust, especially from the fins, to ensure efficient heat transfer. Always ensure the heater is completely cool and unplugged before cleaning.