Comparison: Best 700 Watt Space Heater (Updated | Dec 16th)
When winter’s chill creeps in, a reliable 700-watt space heater can be your cozy companion without breaking the bank on energy bills. But with so many options, how do you choose the perfect one? We’ve done the legwork, testing top models to bring you the ultimate guide to the best 700-watt space heaters. Whether you need a compact heater for your office or a powerful one for your living room, we’ll help you find the ideal balance of efficiency, safety, and comfort to keep you warm all season long.
Editor’s Choice
Best for a specific purpose
- Best for efficient radiant heat: Tangkula 700W Portable Space Heater
- Best for silent comfort heating: COSTWAY Oil Filled Radiator Heater
- Best for compact quiet radiator: Air Choice Radiator Heater
- Best for silent space saver: Air Choice Radiator Heater
- Best for maintenance-free warmth: Air Choice 700W Oil Filled Radiator Heater
- Best for versatile heating modes: Portable Space Heater
- Best for energy-saving radiant: LifePlus Small Oil Filled Heater
- Best for safe compact heater: ZAFRO Space Heater
- Best for 360° secure heating: Tangkula Oil Filled Radiator Heater
- Best for quiet energy saver: LifePlus Small Oil Filled Heater
Product Comparison: Best 700 Watt Space Heater
Efficient Radiant Heat
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 unit’s 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.
Silent Comfort Heating
COSTWAY Oil Filled Radiator Heater, 700W Portable Space Heater with Adjustable Thermostat, Overheat Protection, Electric Heater for Bedroom, Indoor use
COSTWAY
- Adjustable Thermostat: In order to meet your different heating needs, this oil filled radiator heater allows you to adjust the temperature from low to high (32℉ – 194℉) by rotating the thermostat knob. Besides, it features the thermostat. If the room reaches the desired temperature, it will auto-off for energy-saving.
- ️Effective Heating: Equipped with 7 heating fins and diathermic oil that no need to refill, this electric space heater is able to heat up small spaces evenly. Meanwhile, the 360 full-area heat dissipation provides comfy and steady warmth for people around it.
- Designed for Safety: Considering your security, this portable radiator heater comes with overheat protection. If it overheats, this space heater will automatically shut off for safe protection. At the same time, the ETL certification adds extra safety.
- Quiet Operation: Working without any fans and winds, this electric oil filled radiator creates a noiseless environment for you to work. Likewise, there are no dazzling lights that avoid disturbing your sleeping. Therefore, you can use this space oil filled heater day and night.
- Portable Space Heater: With the handy handle and lightweight design, this oil filled radiator electric heater makes movement conveniently so that you can move it from one room to another effortlessly. In addition, the compact size is perfect for different places, such as home, apartment and office etc.
Compact Quiet Radiator
Air Choice Radiator Heater, 700W Oil Filled Radiator Heater with Adjustable Thermostat, 2 Heat Settings & Overheat Protection, Silent Operation, Portable for Bedroom, Office, Under Desk, Black
Air Choice
- Personalized Warmth for Small Spaces: Designed with a 700W heating capacity, this compact radiator heater is ideal for rooms up to 120 sq. ft. Unlike oversized radiators that waste energy, it delivers efficient warmth right where you need it—perfect for bedrooms, offices, or dorm rooms
- Silent Heating, No Disruptions: Powered by advanced radiant heating technology, this oil space heater produces heat without fans or blowing air. That means no drafts, no noise, and no distractions—making it the perfect choice for light sleepers, baby nurseries, or quiet study environments
- Enhanced Safety Protection: Equipped with a sensitive overheat protection system, the oil heaters for indoor use are designed to automatically shut off when the surface temperature exceeds 105°F. Combined with an independent power switch, it provides double safety assurance and peace of mind for family use
- Compact Size, Full Functionality: Measuring only 15.1″ × 5.4″ × 12.4″, this space-saving oil heater is small in footprint yet complete in features. With adjustable thermostat control and two heat settings, you can easily customize your comfort without taking up valuable floor space
- Portable Warmth That Follows You: Built with an integrated carry handle, this lightweight oil filled radiator heater moves effortlessly from room to room. Place it by your desk during work hours, then carry it to your bedside at night—enjoy flexible warmth wherever you go
Silent Space Saver
Air Choice Radiator Heater, 700W Oil Filled Radiator Heater with Adjustable Thermostat, 2 Heat Settings & Overheat Protection, Silent Operation, for Bedroom, Office, Under Desk, White
Air Choice
- Efficient Heating for Small Spaces: Designed with 700W of steady heating power, this radiator heater warms up areas up to 120 sq. ft., making it perfect for bedrooms, home offices, or under-desk use. It delivers gentle, consistent warmth that swiftly chases away the chill and creates a relaxing indoor environment without overwhelming the space
- Silent Operation with Safety in Mind: Unlike traditional heaters that blow hot air and create noise, this unit uses fanless oil-radiator technology for truly silent operation—no buzzing, no dryness. The oil heaters for indoor use feature an auto shut-off at 105°F, ensuring safety for overnight use or around kids and pets
- Compact Design with Easy Portability: Measuring just 15.1″ (D) × 5.4″ (W) × 12.4″ (H), this oil filled radiator heater is compact enough to fit seamlessly into tight corners, under desks, or beside your bed. The built-in carrying handle makes it effortless to move from room to room, ensuring you stay warm wherever you go—no installation required
- Simple Controls for Flexible Warmth: Designed for simplicity, this oil space heater features a rotary thermostat knob and an independent power switch. Choose between high and low heat levels to suit your comfort needs. The intuitive operation is user-friendly for all age groups, including the elderly and children—no complicated settings, just straightforward warmth
- Consistent Warmth with Energy Efficiency: This oil heater delivers steady, radiant heat without frequent cycling or harsh hot air blasts—ideal for long-term comfort during colder months. Its gradual temperature rise and consistent warmth create a cozy atmosphere while minimizing unnecessary energy use, making it a smart heating solution for your home or workspace
Maintenance-Free Warmth
Air Choice 700W Oil Filled Radiator Heater, Oil Heaters for Indoor Use with Adjustable Thermostat & 2 Heat Settings, Overheat Protection, Ultra Quiet, Small Space Heater for Bedroom Office Desk, White
Air Choice
- 700W Efficient Heating for Small Spaces: With a steady 700W power output, this radiator heater delivers fast, even warmth—perfect for small rooms up to 120 sq. ft. The rotary thermostat and independent power switch let you choose between high and low heat settings, giving you customized comfort anytime
- Built-In Safety Shut-Off for Peace of Mind: Equipped with an overheat protection system, the oil heaters for indoor use automatically shut off once the temperature exceeds 105°F. Whether you’re using it overnight or for extended periods, you can relax knowing your safety is protected without constant monitoring
- Durable & Maintenance-Free Design: Filled with specially formulated thermal oil, this oil heater requires no refills or replacements—ever. Paired with a tough steel housing, it’s built to last through winter after winter, providing long-lasting, reliable warmth for your home or office
- Silent, Wind-Free Operation: Using natural convection and oil circulation, the oil filled radiator heater works quietly without fans, noise, or glaring lights. It creates a calm, cozy environment—perfect for sleeping, studying, meditating, or working in total comfort
- Compact & Portable for Flexible Placement: Measuring just 15.1″ D × 5.4″ W × 12.4″ H, this small radiator heater as a slim design that saves space, while the wide, tip-resistant base adds stability. Lightweight and equipped with a carry handle, it’s easy to move between the bedroom, study, or office so you can enjoy warmth wherever you go
- NOTE: This heater uses a safety thermal control system that cycles on/off to maintain stable heating, but it does not include a digital temperature setting.
Versatile Heating Modes
Portable Space Heater, Three Heating Modes (700W/1000W/1500W), with Remote Control, 1-12H Timer Electric Heaters, Ideal for Home, Office, and Bedroom Indoor Use
WINHL
- Fast Heating: The space heater features PTC ceramic heating technology, allowing it to heat up in just a few seconds. It provides stable and even heat distribution while being energy-efficient and environmentally friendly, reducing power consumption for more effective winter heating.
- Multiple Heat Settings: The portable heater offers three adjustable heating modes (700W/1000W/1500W) to suit different environments and personal preferences. Easily control the temperature for a more convenient and customized heating experience. The remote control requires 2 AAA batteries (batteries not included).
- Safety Protection Design: The room heater is equipped with overheat protection and a tip-over auto shut-off feature to prevent safety hazards. Made of high-temperature-resistant, flame-retardant materials and rigorously tested for safety, it ensures peace of mind for you and your family.
- Compact & Portable: With a lightweight design and a convenient carrying handle, this heater can be easily moved to the bedroom, office, study, or any other space. Enjoy warmth anytime, anywhere, without the hassle of complex installation.
- ETL-Certified Safety – Our customer service team will respond to your questions within 24 hours with a 30-day return and 12-month exchange guarantee for peace of mind.
Energy-Saving Radiant
LifePlus Small Oil Filled Heater, Portable Radiant Space Heater with Energy Saving, Overheat Safety, 700W Personal Heater Quiet Work for Small Space Bedroom, Indoor use (Black)
LifePlus
- [Small and portable]- Small radiator heater has a handle design that you can easily place anywhere. The design is compact is not take up space. If you are looking for an oil heater for indoor use in a small room. Congratulations! Our product is perfect for you!
- [Quiet and easy to use]- The oil heater works quietly, so you cannot even remember if it is still on when our products work. And it is set up so easily that do not take up any of your time. The oil-filled heater gives you a warm and quiet room with a steady flow whenever you fall asleep.
- [Durable and without wind]- The radiator heater is a permanently sealed oil tank made of high-quality steel, so it doesn’t require refueling or changing oil. The oil radiator heater warms up the room through heat oil without wind, and you won’t worry about the air getting dry or the dust flying.
- [Overheart safety feature]- The electric radiant heater will automatically shut down when the heater’s internal components reach a set temperature that could cause overheating. It can effectively keep your family safe.
- [Energy saving]- Oil-filled radiator heater can heat your bedroom steadily and keep the room comfortable all day. But it doesn’t consume electricity, only tops out at 700W. So its surface is not too hot to burn the skin.
- Note – This mini oil heater only has 700W, so it might not be strong enough to heat the entire room properly. Mini oil heater works through radiant heat, meaning you need to be close to it to feel warm
Safe Compact Heater
ZAFRO Space Heater, 1500W/700W Portable Electric Heaters with Thermostat, Overheat & Tip-Over Protection, Ceramic Heater with Heating & Fan Modes for Indoor Household or Office Use, Black
ZAFRO
- 【Quiet and Comfortable Heating】- The space heater operates at a low noise level below 45 dB, ensuring a quiet atmosphere for rest or work. It features three operating modes – fan mode/low-power warm air(750W)/high-power warm air(1500W), allowing you to customize a comfortable heating environment according to your preferred heating mode
- 【Reliable Dual Safety Protections】- Features dual safety systems — a tip-over protection and overheat protection. The heater automatically shuts off if knocked over or if the temperature exceeds safe limits, ensuring safe and reliable heating
- 【Temperature Adjustment on Demand】- The automatic thermostat function intelligently maintains your desired room temperature by cycling on and off, saving energy. A clear power-on indicator light reminds you that the unit is energized and operational
- 【Compact and Portable Design】- The space heater measures 5.31″ x 7.28″ x 9.45″, featuring a sleek compact design with a built-in handle for effortless mobility across various spaces
- 【Warm-Hearted Service】- Whether before or after purchase, feel free to ask us with any questions. We promise to provide prompt, dedicated responses and effective solutions to ensure your complete satisfaction
360° Secure Heating
Tangkula Oil Filled Radiator Heater, 700W Portable Radiant Space Heater with Adjustable Thermostat, Overheat Protection, Small Mini Electric Oil Heaters for Indoor Use, Home, Office, Black
Tangkula
- 360° Efficient Heating: With the ability to heat spaces up to 120 square feet, the radiator heater is ideal for keeping you warm on chilly days and nights. It boasts an easy-to-adjust thermostat to ensure your environment stays at a comfortable temperature, enhancing your coziness.
- Crafted for Security: This electric oil heater comes with quadruple safety protections, including V-0 flame retardant material, 158℉ overheat protection, a UL-certified plug, and ETL certification. These safety features make it a reliable choice for secure heating.
- Quiet & Stable Design: Operating silently, this portable radiant heater creates a tranquil sleeping environment. Moreover, its stable base prevents tipping, providing uninterrupted heat delivery.
- Portable Space Heater: The oil filled heater measures 12” × 5.5” × 15” and is equipped with a convenient carry handle for easy movement from room to room. Its portable nature makes the heater more flexible to use.
- Wide Range of Use: Whether placed in your living room, bedroom, or office, this portable space heater delivers ample warmth. Its sleek, compact design allows it to fit neatly under desks, offering heat without taking up too much space.
Quiet Energy Saver
LifePlus Small Oil Filled Heater, Portable Radiant Space Heater with Energy Saving, Overheat Safety, 700W Personal Heater Quiet Work for Small Space Bedroom, Indoor use (White)
LifePlus
- [Small and portable]- Small radiator heater has a handle design that you can easily place anywhere. The design is compact is not take up space. If you are looking for an oil heater for indoor use in a small room. Congratulations! Our product is perfect for you!
- [Quiet and easy to use]- The oil heater works quietly, So you cannot even remember if it is still on when our products work. And it is set up so easily that do not take up any of your time. The oil-filled heater gives you a warm and quiet room with a steady flow whenever you fall asleep.
- [Durable and without wind]- The radiator heater is a permanently sealed oil tank made of high-quality steel, so it doesn’t require refueling or changing oil. The oil radiator heater warms up the room through heat oil without wind, and you won’t worry about the air getting dry or the dust flying.
- [Overheart safety feature]- The electric radiant heater will automatically shut down when the heater’s internal components reach a set temperature that could cause overheating. It can effectively keep your family safe.
- [Energy saving]- Oil-filled radiator heater can heat your bedroom steadily and keep the room comfortable all day. But it doesn’t consume electricity, only tops out at 700W. So its surface is not too hot to burn the skin.
- Note – This mini oil heater only has 700W, so it might not be strong enough to heat the entire room properly. Mini oil heater works through radiant heat, meaning you need to be close to it to feel warm
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’s the difference between ceramic and infrared 700W heaters?
Ceramic heaters use a fan to blow air over a hot ceramic plate, making them great for warming small rooms quickly. Infrared heaters radiate heat directly onto objects and people, providing more targeted warmth without drying out the air. The best choice depends on whether you want to heat a whole area or just warm up a personal space.
Are 700W space heaters energy efficient?
All electric space heaters are 100% efficient at converting electricity into heat, but a 700W model uses less energy than a 1500W one. This makes it a cost-effective choice for personal use, like under a desk or in a small bedroom. It will save you money on your electricity bill compared to running a higher-wattage heater for the same task.
What essential safety features should I look for?
Prioritize heaters with an automatic tip-over switch that instantly shuts the unit off if it’s knocked over. Overheat protection is also critical, as it turns the heater off if internal components get too hot. Look for models with a cool-touch exterior and a certification from a nationally recognized testing laboratory like UL or ETL.
How do I choose between different heating modes and thermostats?
Most 700W heaters offer a low and high setting, with ‘high’ being the full 700W output. An adjustable thermostat is a valuable feature that allows you to set a desired temperature, and the heater will cycle on and off to maintain it. This helps maintain a consistent comfort level and can be more energy-efficient than running it constantly.
Is a 700W heater powerful enough for my room?
A 700W heater is ideal for personal spaces, small offices, or supplemental heating in rooms up to about 70-100 square feet. It is not powerful enough to be the sole heat source for a large living room or an open-plan area. For best results, use it to warm your immediate vicinity rather than trying to heat an entire large room.
What are the benefits of a fan-forced vs. fanless design?
A fan-forced heater, like a ceramic model, circulates warm air to heat a space faster but produces some noise. A fanless design, often found in infrared or oil-filled radiators, is completely silent but takes longer to raise the ambient temperature of a room. Consider whether quiet operation or rapid heating is more important for your needs.
How does noise level vary between different 700W heaters?
The noise level is primarily determined by whether the heater has a fan. Fan-forced ceramic heaters will produce a noticeable humming or whirring sound, similar to a small fan. Infrared and other radiant-style heaters are virtually silent, making them the best choice for bedrooms, offices, or other quiet environments.
What makes a 700W heater a good value?
A good value comes from a balance of a low purchase price, low running costs, and essential safety features. A heater with a precise thermostat and timer can save you money in the long run by avoiding unnecessary energy use. Durability and a solid warranty also add to a product’s overall value.