Best Space Heater For 400 Square Feet in 2022 [*Top Picks*]

Looking for the best space heater for 400 square feet on the market? We’ve got you covered. Check out our ratings of absolute bestsellers below and make a final decision.

5702 Reviews Scanned

  • Space heaters-Space heater for indoor use,protable electric heater with 3 power modes, 495 Sqft Coverage 1500w/1000w/ECO,Tip-over & Overheat Shut-off,40% Energy Saving,Infrared heaters for home
    Bestseller #1
    Space heaters-Space heater for indoor use,protable electric heater with 3 power modes, 495 Sqft Coverage 1500w/1000w/ECO,Tip-over & Overheat Shut-off,40% Energy Saving,Infrared heaters for home (165)
      【Space Heaters for Indoor Use with 3 Power Modes】- Switch to High mode-1500W, Air Choice space heater can heat up your whole room only in several seconds. As for the mini infrared space heater, like office or study room, you turn the indoor heater to Low mode -1000W for power saving heater. For bedroom, indoor space heaters' ECO mode can help you to save a lot of heating bills even if the room heater kept on all night long 【 Space Heater's Safety Assurance】- Go out and forgot to turn off the electric space heater? Don’t worry, Air Choice fan heater got overheat shut-off protection to keep your room away from fire disaster. Electric space heater has been pushed over by your dog? Take it easy, indoor heater 's tip-over protection auto shut-off the home heater when it fell down. Besides, you can set a Child Lock to protect your kids’ safe with space heaters. (For safety, it is not recommended to use power strips) 【Electric Space Heaters for Indoor Use with Timer, Remote Control &LED Screen】- Air Choice space heater fan is equipped with timer, a remoter control and LED display screen. Infrared electric heater's all functions can be set by remote control when you are lying on the bed or watching TV on the couch. Electric space heater's LED screen can show you the current heater working status clearly.Space heater with thermostat for indoor use is an efficient electric space heater 【Infrad Heaters for Indoor Use with Low Noise 】- Indoor heater with13.4*7.5*11.8 inches portable for various spaces. The ceramic space heater each side of the home heater got a built-in handle. Easy for indoor use with oscillating heater fan. Air Choice oscillating infrad electric heater promise you a quiet living environment when indoor heater fan working on 【Space heater for the home got Smart 12Hrs Timer】- Air Choice space heater is committed to making a high-quality product. Portable indoor electric heaters promise you 2-Year quality assurance. The electric space heater customer service team will provide you a satisfied service within 12Hrs
  • Dreo Space Heater for Indoor Use, 1500W Fast Heating Ceramic Electric Heater with Thermostat, Remote, Overheating & Tip-Over Protection, 1-12H Timer, 70° Oscillating Portable Heater for Office Bedroom
    Bestseller #1
    Dreo Space Heater for Indoor Use, 1500W Fast Heating Ceramic Electric Heater with Thermostat, Remote, Overheating & Tip-Over Protection, 1-12H Timer, 70° Oscillating Portable Heater for Office Bedroom (386)
      ETL-Certified Safety: Made of V0 flame-retardant materials with multiple safety features including built-in smart tip-over protection, overheat protection, 12-hour timer, 24-hour automatic power off without interaction, V0 flame retardant 2-prong plug, and sturdy 6ft long flat power cord. Safe and worry-free all-day use Fast Heating: Powerful 1500W PTC ceramic heating allows this space heater to heat up in seconds, suitable for warming up spaces in the home including bedrooms, basements, garages, living rooms, and can also be used in offices, dorms, hot yoga studios, etc Quiet Heating: 40dB - almost as quiet as a library. The fan wheel uses oblique airflow technology, which effectively reduces wind noise and makes the room heater 12% quieter than traditional electric heaters. Calm airflow lets you sleep soundly and work undisturbed during the cold winter Uniform Heating: The exclusive trackball system helps create smooth and quiet oscillation. The 70° wide-angle oscillation, with a lifespan of over 750,000 cycles, boosts heating coverage by 20%, which helps distribute the warm air more evenly towards the room's corners Energy Efficiency: Save on energy bills and live more sustainably. With a built-in precise temperature sensor, the smart ECO mode adjusts the working mode independently (with a low of 900W and high of 1500W) based on the ambient temperature Usage Comfort: The touchscreen is placed on top of the heater for easier reach, and the remote provides full access from up to 26 feet away. The 16-inch compact design makes our space heater a real space saver that is easy to move around with its hidden handle
  • Portable Electric Space Heater, 1500W/750W Ceramic Heater with Thermostat, Heat Up 200 Square Feet in Minutes, Safe and Quiet for Office Room Desk Indoor Use ( Black )
    Bestseller #1
    Portable Electric Space Heater, 1500W/750W Ceramic Heater with Thermostat, Heat Up 200 Square Feet in Minutes, Safe and Quiet for Office Room Desk Indoor Use ( Black ) (6170)
      Easy control heater: Adjust the knob on the right to turn the unit on. "I" is for producing heat at 750 watts, "II" will produce heat faster and hotter at 1500 watts, and "Fan" will blow out cool air. Then turn the thermostat knob on the left toward the + sign. The adjustable temperature range is 0℉ to 158℉. It will get the heater to cycle on and off according to if the room's temperature reaching heater's setting temperature Energy efficient heater: With PTC ceramic heating tech and high speed fan, this heater put out tons of heater to heat up 200 square feet in seconds. Helps to save electric bills by heating up needed small spaces instead of heating the whole house with other centralized heaters. It's quiet enough to use in a bedroom while sleeping Portable mini heater: Dimensions: 6.2 x 7 x 9.2 inch, 3.2 pounds light weight mini heater easy to carry around with handle. This 120V heater has 6 feet long cord and 2 prong connection fits for indoors use such as office, room, desk, home, bedroom Safe room heater: The heater is made of flame retardant material to achieve zero fire hazard. Tip over protection shut off heater when it's knocked over, perfect for houses have kids and pets. Overheat protection will shut heater off automatically when the heater overheat Long serving life: Tip over swicth, overheat protection, rubber extension cord, flame retardant and ceramic speedy heating and cooling for its steady operation and a long serving life, no extra worry on accidental damage for winter life
  • Amazon Basics Portable Eco-Smart Space Heater - Black
    Bestseller #1
    Amazon Basics Portable Eco-Smart Space Heater - Black (386)
      Classic black portable space heater with adjustable electronic thermostat and easy-to-read LED display (measures 14.5 x 11.4 x 14.7 inches; weighs 14.6 pounds) Includes over-heat sensor for safety Adjustable temperature setting from : 65- 85 ℉ Four infrared heating elements with 750W and 1500W power settings as well as ECO-Smart setting for energy savings Includes remote control (batteries not included) Can heat rooms up to 160 sqft (standard 9 foot ceiling height)
  • Electric Space Heater, 70° Oscillating with 1500W/750W PTC Fast Heating Portable Safe and Quiet Heater with Tip-Over and Overheat Protection Heat Up 200 Square Feet for Office Room Desk Indoor Use
    Bestseller #1
    Electric Space Heater, 70° Oscillating with 1500W/750W PTC Fast Heating Portable Safe and Quiet Heater with Tip-Over and Overheat Protection Heat Up 200 Square Feet for Office Room Desk Indoor Use (38)
      [Fast Heating in seconds] - This ceramic heater provides 2 heat levels, High (1500W) and Low (750W). Advanced PTC ceramic heating element with Quick Heat technology allows it to heat up in 3 seconds with reliable ceramic heating technology, offering a steady comfortable temperature. [Uniform Heating with 70°Oscillating] - The exclusive trackball system helps create smooth and quiet oscillation. The 70° wide-angle oscillation, with a lifespan of over 750,000 cycles, boosts heating coverage by 20%, which helps distribute the warm air more evenly towards the room's corners. [Safe for kids and pets] - Electric indoor heater equipped with flame retardant material to avoid any fire hazard. An automatic safety shutoff system will shut it off when the heater overheats or it was knocked over by accident and it will come back on automatically if it is uprighted. [Quiet Heating at Home] - 30-40dB - almost as quiet as a library. The fan wheel uses oblique airflow technology, which effectively reduces wind noise and makes the room heater 12% quieter than traditional electric heaters. You can also turn off the fan and enjoy the warmth separately without any noise. [Easy Operating with Compact Size] - This portable heater measures 5.1*6*10.9 inches and the only 3.96lbs, you can easily move this portable around and place it anywhere in your room or office. It is also equipped with a handle to adjust the temperature based on your own needs.
  • Aikoper Space Heater, 1500W Ceramic Tower Heater, Portable Electric Oscillating Heater with Adjustable Thermostat, ECO Mode, Remote Control, 8-Hrs Timer, Overheat & Tip-over Protection for Indoor Use
    Bestseller #1
    Aikoper Space Heater, 1500W Ceramic Tower Heater, Portable Electric Oscillating Heater with Adjustable Thermostat, ECO Mode, Remote Control, 8-Hrs Timer, Overheat & Tip-over Protection for Indoor Use (135)
      【 Meet Your Heating Needs】Maximum 1500w power and 2 heat settings provide efficient heat into every part of the room that needs constant heat in cold weather. Temperature adjustment by 1°F interval allows you to customize your preference temperature. 【Get Instant Warmth】This ceramic tower heater warms the air around you by creating a mild current of heat,quickly heat-up with ceramic heating technology, ideal for getting rid of the cold instantly. Requiring no assembly and a carry handle allow portable use. 【LOWER YOUR ENERGY BILLS】 ECO setting allows the heater turning on/off automatically by comparing the room tempreture with setted tempreture, which could maximum opitimize your energy consumption. 【BACKED WITH SAFETY 】The tower heater with auto shut off provides reliable tip-over and overheat protection.Safe for families with kids or pets who may knock it down . 8-hours timer ensures just the right time warm comfort with peace of mind. 【Worry-free After sale】We take pride in the quality and after-sale service of our ceramic tower heater. Any question, contact with us via the Amazon mailbox, you will get solution in 24 hours.
  • Pro Breeze Space Heater – 1500W Electric Heater with 3 Operating Modes and Adjustable Thermostat - Room Heater for Bedroom, Home, Office and Under Desk - White
    Bestseller #1
    Pro Breeze Space Heater – 1500W Electric Heater with 3 Operating Modes and Adjustable Thermostat - Room Heater for Bedroom, Home, Office and Under Desk - White (1326)
      Super Fast Warming: This electric heater is engineered with advanced ceramic heating elements which provide faster and more energy efficient heating than a traditional electric space heater. Small and powerful this is the perfect room heater for bedroom, office and under desk use. Powerful Heating: This small space heater features 750W (Low) and 1500W (High) power modes as well as a gentle fan only mode. Reduce your energy bills by using this energy efficient space heater to heat individual rooms rather than expensively heating your entire home. Adjustable Thermostat: This portable heater with thermostat features an easy to use and fully adjustable thermostat control which monitors the surrounding air temperature for optimal heating efficiency. Advanced Safety Features: Built in overheat protection and an enhanced anti-tip over switch ensures the mini heater instantly switches off in any unsafe situation, giving you complete peace of mind. Ultra Portable: The lightweight and compact design allows this space heater for bedroom to be transported to wherever you needed it most, making it the perfect space heater for office and for use in homes, garages, dorms, and offices. DIMENSIONS: 6.5” x 5” x 9” 750W (Low) 1500W (High). 120V, 60Hz.
  • EconoHome Wall Mount Space Heater Panel - with Thermostat - 400 Watt Convection Heater - Ideal for 120 Sq Ft Room - 120V Electric Heater - Save On Your Home Heating Costs - Overheat Protection
    Bestseller #1
    EconoHome Wall Mount Space Heater Panel - with Thermostat - 400 Watt Convection Heater - Ideal for 120 Sq Ft Room - 120V Electric Heater - Save On Your Home Heating Costs - Overheat Protection (573)
      SAVE UP TO 50% OF YOUR HOME HEATING COSTS: Lower your energy bills and still feel cozy and warm with our electric heater. Our flat heaters are ENERGY EFFICIENT, consuming 0.4 KW/HR., which is less than 1/3 of the electricity than conventional space heaters. This method will lower your energy bills with great savings and will keep the room with constant ambient warmth. CONVECTOR HEATER SPECS: Ideal for a 120 sq. ft. room, 400 watts, 120 volts, 3.33 amps. Panel Heater Dimensions: 23.5 x 23.5 x ¼”. cETL approved. UL-2021 & RoHS compliant. HEAT REFLECTOR INCLUDED, temperature ranges between 41-86 °F. This unit may be HARD WIRED! OVERHEAT PROTECTION for your safety! We offer a 3 Year Manufacturer Warranty! SAFE AND EFFICIENT TECHNOLOGY: This electric wall heater operates at a constant temperature persistently. It ignites with minimal radiant heat which transmits to convection currents that rise from behind the heating panel and circulates heated air around the room. WE RECOMMEND BUYING THE HEAT GUARD ACCESSORY to go along with this heater because it doubles the efficiency of the convection currents, and its exterior casings stay warm and safe to touch. UPDATED CRACK RESISTANT VERSION: This upgraded durable model is TRIPLE REINFORCED and made with a superior calcium silicate material. TRIPLE INSULATED for electrical safety. OVERHEAT PROTECTION makes it safe to leave unattended. EASY TO MOUNT on any wall (Installation hardware Included). Enjoy the beautiful sleek PAINTABLE DESIGN which blends in with any décor. NO FAN THAT DRIES OUT: Asthma and dust allergy sufferers can enjoy warmth without irritation since the air will not dry out, nor will dust circulate around the room. Perfect for all indoor rooms, including bathroom, bedrooms, office, garage, and RV.
  • Dreo 24
    Bestseller #1
    Dreo 24" Space Heater, 10ft/s Fast Quiet Heating Portable Electric Heater with Remote, 3 Modes, Overheating & Tip-Over Protection, Oscillating Ceramic Heater for Bedroom, Office, and Indoor Use, Black (386)
      Whole Room Heating: Our 24-inch tower heater delivers warmth at the speed of 10 ft/s. 70° widespread oscillation helps heat cover every corner of your room. Perfect choice to quickly heat small to large rooms including office, bedroom, and living room on cold days. 2S Rapid Heating: Powerful 1500W PTC ceramic heating allows this space heater to send out hot air in 2 seconds. 2500 rpm fan helps spread heat quickly, making you feel the change from cold to warm in a matter of seconds. Safe & Reliable: Made of V0 flame retardant materials, this ETL-listed ceramic heater comes with multiple security features including overheat and tip-over protection, auto off after 24h without operation. The plug is enhanced to prevent short circuits during use, ensuring your worry-free use all day. Quiet Heating: With Dreo ObliqueAirflow Technology, this electric heater creates quiet heat with noise level as low as 40dB (quiet like a library). Equipped with display auto off and the mute button, it allows you to work and sleep without being disturbed. Energy Efficient: Smart ECO mode uses a built-in precise temperature sensor to keep your room at a constant temperature while saving more on energy bills. Personalize your warmth with 3 heating modes (High:1500W, Low:900W, ECO) and a thermostat from 41 to 95°F in 1°F increments. Easy to Use: One touch to change the temperature and mode on the tilted digital panel, or remote control your heater from 26 feet away while working. Hidden handle helps you freely move around for whole room warmth. Space-saving and easy to store.
  • Atomi Smart WiFi Portable Tabletop Space Heater - 2nd Gen, 1500W, Oscillating, 750 Sq. Ft. Coverage, Works with Alexa & Google Assistant, Beeping Sound Removed
    Bestseller #1
    Atomi Smart WiFi Portable Tabletop Space Heater - 2nd Gen, 1500W, Oscillating, 750 Sq. Ft. Coverage, Works with Alexa & Google Assistant, Beeping Sound Removed (196)
      WIFI ENABLED AND VOICE ACTIVATED – Control your heater from your phone anytime. Turn the heater on/off, change temperature, create schedules, and more using the free Atomi Smart App. Also works via simple voice commands with Alexa or Google Assistant. SAFETY & STABILITY - Receive an instant phone notification if heater tips over. Also has built-in overheat protection, cool-touch housing and handle, a wobble-free base, and a 360 degree tip-over safety switch. Works on any floor surface – including carpet. ETL Certified. LARGE TOUCH SCREEN PANEL – Can use without the app. Digital display and manual control pad features buttons for turning the heater On/Off, changing the temperature, switching between 3 modes (High, Low and ECO), setting the timer, and turning oscillation On/Off. HEATS QUICKLY – Whisper-quiet 1500W PTC ceramic heating technology warms the surrounding air to 70 degrees in two seconds flat. Provides heat for rooms up to 750 square feet. Wide-angle oscillation warms up every corner of your room.
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