Comparison: Best Electric Space Heater For 400 Sq Ft Room (Updated | Dec 16th)
That’s why we’ve done the legwork for you, testing and comparing the top contenders to help you make an informed decision. Whether you’re battling drafts in a drafty apartment or seeking supplemental warmth for a family room, our comprehensive guide will help you discover the ideal heating solution that balances performance, safety, and energy efficiency for your space.
Editor’s Choice
Best for a specific purpose
- Best for humidified infrared heat: Dr Infrared Heater DR-998
- Best for original dual heating: Dr Infrared Heater Portable Space Heater
- Best for flame-effect warmth: Uthfy 32″ Space Heater for Large Room
- Best for 360° radiant comfort: Landeagle Space Heaters for Large Room
- Best for rapid airflow heating: Dreo Space Heater for Large Room
- Best for smart wall warmth: Dreo Smart Wall Heater
- Best for silent panel heating: Ballu Convection Panel Space Heater for Large Room
- Best for milkhouse reliable heat: Comfort Glow EUH341 Milkhouse Style Electric Heater 5
- Best for compact dual-mode heater: Comfort Glow EFH1527 Electric Fan and Heater
- Best for quiet wall convection: EconoHome Convection Wall Heater with Thermostat – 400W Electric Wall Mounted Space Heater Panel – Updated Model
Product Comparison: Best Electric Space Heater For 400 Sq Ft Room
Humidified Infrared Heat
Dr Infrared Heater DR-998, 1500W, Space Heater with Humidifier, Oscillation Fan & Remote Control (Cherry)
DR. INFRARED HEATER
- Can heat up a large room with Dual Heating System: Infrared Quartz tube + PTC. Tip-over protection and Overheat protection.Heating Coverage:400 sq.ft
- Built-in humidifier produces a cool mist to add much needed humidity to dry, winter air
- Oscillation function distributes warmth throughout your entire area evenly and faster.Can be operated as a fan with humidifier or without , good for summer time
- Electronic Thermostat: range 50 to 85 degrees. Uses water bottle instead of water tank. Lifetime filter can be removed easily and cleaned. Cannot harm children or pets. Filter can be cleaned with warm water or a vacuum once removed from the back of the unit
- The DR-998 Portable Infrared Space Heater is a 1500W portable heater featuring a dual-heating system with both infrared and ceramic heating elements inside. This heater comes with a Humidifier attachment as well as a remote for convenient use. The heater can be used with or without the humidifier, the humidifier can be run with or without the heating portion of the heater turned on, and the heater can also be run in fan-only mode. It comes with 4 durable caster wheels that allow the heater to move effortlessly from room to room.
- Mounting type: Free Standing
Original Dual Heating
Dr Infrared Heater Portable Space Heater, Original, 1500-Watt, Cherry (Pack of 1)
DR. INFRARED HEATER
- Can heat up a large room with Auto Energy Saving Model With High and Low Feature. Tip-over protection and Overheat protection.Heat Up for a large room – Dual Heating System: Infrared Quartz tube + PTC for 60% more heat than others. Rated around 5200 BTU.
- Dual Heating Systems featuring infrared quartz tube + PTC with 12-Hour automatic shut-off timer. Amperage: 12.5 Amps
- IR Remote Control, High Pressure Low Noise Blower with Noise level 39 dB super quiet. Heating can cover for a large room.
- Electronic Thermostat: range 50 to 85 degrees. Caster Wheels and Lifetime Filter
- Weights 24 lbs and uses 12.5 Amps of Power. 1500 Watts. Power Cord is 72-inch-long (6 Feet)
Flame-Effect Warmth
Uthfy 32″ Space Heater for Large Room, 1500W Electric Heater for Indoor Use with 24H Timer & 3D Flame, 120° Oscillation, ECO Mode, Child Lock, Remote, Portable Tower Heater for Room, Bedroom Office
Uthfy
- 🔥Rapid, Wide-Coverage Heating: Boasting a 32-inch height and 120° oscillating design, this space heater distributes warm air across large spaces—ideal for 400 Sq.ft rooms! Powered by PTC ceramic heating technology, the 1500W heater delivers instant warmth in just 1 seconds, quickly reaching your desired temperature without lengthy waits
- 🔥Stunning 3D Flame Effect: More than a heater—this 1500W electric heater doubles as a decorative centerpiece! Its lifelike 3D dancing flames create a cozy, inviting ambiance, blending functional heating with visual comfort that elevates any room decor, multifunctional gift for Christmas, or other festivals
- 🔥Energy-Saving and Cost-Effective: Customize your heating with 2 power modes (1500W high/1000W low) and a precise thermostat (50°F-99°F, 1°F increments). Instead of wasting energy on central heating, heat only the spaces you use—plus, the thermostat maintains a consistent temperature to slash electric bills
- 🔥Dual Control Modes and Portable Design: You can operate effortlessly via the top LED control panel or included remote—adjust power, heating modes, oscillation, temperature, 24-hour timer, flame settings, and screen on/off from your sofa or bed. The 24-hour timer and quiet 25 dB performance guarantees undisturbed comfort in sleeping,working or relaxing. Featuring a hidden handle and lightweight build, this portable heater is perfect for home, office, or any space needing targeted warmth
- 🔥Engineered for Safety: Designed for families with kids and pets, this room heater includes V0-grade flame-retardant materials, an enhanced safety plug, overheat protection, and tip-over shutoff. For extended durability, the indoor heater features a 30-second post-shutdown cooling to fully dissipate heat from the heating element
360° Radiant Comfort
Landeagle Space Heaters for Large Room, Whole-Room Heating, 1500 W Radiator Electric Heater with Tip-over & Overheat Protection, Heaters with Remote Control, 12H Timer for Indoor Office Use(26IN)
Landeagle
- 🔥【360° Whole-Room Heating | Large Space Optimized】 Powered by advanced mica heating technology, this radiator heater delivers 1500W of powerful, 99% efficient warmth. Its 360° surround heating ensures even heat distribution across spaces up to 400 sq ft—making it ideal for bedrooms, offices, and living rooms. Wherever you are, experience consistent, enveloping comfort
- 🔥【3-Mode Energy Optimization with ECO Control】 Choose from 1000W (energy-saving), 1500W (fast heating), or smart ECO mode. The programmable thermostat (50°F–95°F) adjusts in 1° increments to automatically minimize energy use while keeping your ideal comfort
- 🔥【Retractable Drying Rack & Skin-Friendly Humidification】 This portable heater features a built-in foldable towel warmer to keep clothes dry and cozy. Its humidification tank adds moisture to the air, helping prevent dry skin and nasal discomfort—even after long periods of use
- 🔥【Child & Pet Safe Certified Heater】 Enjoy total peace of mind with this indoor heater’s advanced safety features. It includes triple overheat protection, flame-resistant materials, tip-over switch, anti-burn plug, child lock, and 7-layer safety verification. UL and FCC certified for guaranteed safety
- 🔥【Silent, Wind-Free Heating with Multi-Control Options】 Experience ultra-quiet warmth with the Landeagle convection heater—no fan, no noise, and no harsh light. Easily control your comfort using the remote, touch panel, or 12-hour timer. Equipped with smooth-rolling wheels and a convenient handle for easy movement between rooms
- Attention：The product does not light up during operation. The heating effect shown is for design purposes only. Please refer to the images without the heating effect for accurate representation
Rapid Airflow Heating
Dreo Space Heater for Large Room, 23 Inch Electric Heaters for Indoor Use, 8 Safe Protection Tower, 70° Oscillation, PTC Ceramic with Thermostat and Remote, Quiet, 12H Timer, Bedroom, Office
Dreo
- Twice the heat power: With dual DC motors, this DREO heater doubles airflow at 10ft/s, heats up in 2s, plus a 25% larger heating plate that efficiently warms rooms up to 250 sq.ft.
- Worry-free warmth: With child-lock, safety plug, overheat, tip-over protection and cool-touch housing, this ETL-listed electric heater provides safe, efficient warmth indoors.
- Energy-efficient heating: Save up to 40% on energy with ECO mode, along with precise temp control (41-95°F) in 1°F increments, 3 heat levels, and a fan mode for optimal comfort.
- Even heat distribution: Enjoy a cozy room with 70° wide oscillating, ensuring heat spreads to every corner for consistent warmth, making it perfect for large spaces on chilly days.
- Whisper-quiet comfort: At a mere 34db, this heater brings warmth to your large room without noise disruption. The 12hr timer offers convenience for effortless heating all day long.
Smart Wall Warmth
Dreo Smart Wall Heater, Electric Space Heater for Bedroom 1500W, 120° Vertical Oscillation, Adjustable Thermostat, Remote Control, 24H Timer, Easy-Mount Heater for Indoor Use, Works with Alexa, WH719S
Dreo
- Widespread Warmth: Dreo’s 120° wide oscillation heating distributes warm air evenly from top to bottom, helping to bring fast heat to every corner of your room more efficiently than regular wall-mounted heaters.
- Smart Control, Seamless Lifestyle: Schedule room heating hours to match your routine, access your heater settings from anywhere with the Dreo app, or even use your voice to control it thanks to Alexa and Google Home compatibility.
- Fast and Accurate Temperature Control: Set the room temp as you like, choose from 41 to 95°F range with an unprecedented 1°F accuracy. Dreo’s PTC ceramic space heater brings fast and steady heating for an exceptional comfort experience.
- Ready for a Good Night Sleep: This smart heater for bedroom automatically adjust its LED panel brightness to low-light conditions, while it delivers warmth with lower noise, making sure nothing interrupts your sleep.
- Hassle-free Installation, Stress-free Maintenance: Get your space heater mounted easily. The package comes with all accessories including a convenient drilling guide with easy to follow steps. Keeping your wall-mounted heater like new is super convenient thanks to its reusable filter and detachable design.
- Heating Coverage: To ensure maximum warmth and comfort, use as a primary heat source for 200 sq. ft. areas, or up to 750 sq. ft. as a supplementary source. Check if your room has proper insulation for optimum efficiency.
Silent Panel Heating
Ballu Convection Panel Space Heater for Large Room,1500W Electric Heater with Programmable Thermostat,WiFi App Control,Standing or Wall Mount,Smart Quiet Heater for Indoor Use,Works with Alexa,White
Ballu
- Reliable Winter Warmth That Lasts: Enjoy a cozy home with the Ballu Space Heater, built with a patented Hedgehog Heating Element crafted from aerospace-grade aluminum and protected by an all-metal body. Engineered for long-term performance—tested to deliver warmth season after season. Backed by a 2-year warranty, your purchase is well supported for added peace of mind
- Quick Comfort, Lasting Warmth:With a 36% increase in air contact surface,this heater spreads warmth faster and more evenly.Enjoy heat in just 30 seconds,and experience a cozy environment as it can warm an entire room within 1–2 hours.Ideal for rooms up to 250 sq.ft as a primary heater,and providing supplemental warmth for areas over 500 sq.ft
- Ultimate Control for Large Rooms: Perfect for living rooms or master bedrooms, this heater gives you options—use the remote from the sofa, the sleek digital panel when passing by, or the app with Alexa for effortless voice control. Whether you’re relaxing, working, or getting ready for bed
- Up to 37% Energy Cost Saving:The Ballu Room Heater combines an exposed temperature sensor, adjustable thermostat,and a highly efficient all-aluminum heating element.These features help maintain consistent warmth while optimizing energy use,so you enjoy a comfortable home with smarter,more efficient heating
- Ultimate Comfort Experience: Say goodbye to noise,cold,and dryness.The Ballu Electric Heater quietly fills your space with gentle,consistent warmth—like being wrapped in a soft blanket on a winter night.Whether you’re relaxing,working,or drifting off to sleep,it creates a cozy and peaceful environment that keeps you comfortable all day long
- Enhanced Flexibility and Style:The Convection Panel Heater can be used freestanding with portable casters or easily wall-mounted with the included accessories—no tools required.Its versatile design makes it a perfect fit for bedrooms,offices,living rooms,and apartments,delivering warmth wherever you need it
- Perfect Safety for Your Family: Ballu space heaters for indoor use large room consists of an insulated alloy case, v0-rated flame-retardant power cord,and plug with multiple safety features,including built-in smart tip-over protection,overheat protection,and a 24-hour timer for added peace of mind
- 120 Volt
Milkhouse Reliable Heat
Comfort Glow EUH341 Milkhouse Style Electric Heater 5,200 Btu, White, Length: 7in, Width: 10.25in, Height: 15.5in
Comfort Glow
- Metal cabinet construction
- Fan forced heat circulation
- Dual wattage selection
- Built-in thermostat
- Accidental tip-over shut-off
- Heating Area: Up to 400 sq ft
- Built-in thermostat with Accidental tip-over shut-off
- Dual wattage selection
- Metal cabinet construction
- Fan forced heat circulation
Compact Dual-Mode Heater
Comfort Glow EFH1527 Electric Fan and Heater,White
Comfort Glow Portable Electrics
- PORTABLE ELECTRIC HEATER: Compact design perfect for small spaces like offices, bedrooms, or apartments, with a 6ft cord for easy placement.
- HEATS UP TO 400 SQ FT: Ideal for small to medium-sized rooms, providing 5,120 BTUs of heat to keep you warm during colder months.
- TWO HEAT SETTINGS: Choose between 750W/1500W for energy-efficient heating based on your needs, controlled via the built-in comfort control thermostat.
- QUIET SPACE HEATER: Operates with minimal noise, making it ideal for use in offices, bedrooms, or quiet spaces without distractions.
- SAFE FOR INDOOR USE: Features overheat and tip-over protection, providing peace of mind while operating in any indoor environment. ETL listed for added peace of mind.
- ENERGY EFFICIENT DESIGN: This room heater indoor unit provides warmth without the high energy costs of traditional heating, perfect for cost-conscious users.
- VERSATILE FAN MODES: Includes two fan-only settings (High/Low) for year-round use, ensuring comfort during all seasons.
- TILT FUNCTION & SWIVEL BASE: Direct airflow exactly where you need it, with the convenient tilt and directional swivel base.
- COMPACT AND STYLISH: Sleek design Approx Dimensions: (9.5″H x 5.9″W x 10.5″D) fits seamlessly into any room decor while delivering efficient heating and cooling.
Quiet Wall Convection
EconoHome Convection Wall Heater with Thermostat – 400W Electric Wall Mounted Space Heater Panel – Updated Model, 120V – Heats Rooms up to 120 Sq Ft
EconoHome
- 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 convector space heater’s exterior casing will feel warm and is safe for adults only. The electric wall heater operates at a constant temperature and emits some radiant heat, but mostly releases convection currents that rise from behind the heating panel and circulates heated air around the room.
- UPDATED CRACK RESISTANT VERSION: This upgraded durable model is TRIPLE REINFORCED and made with a superior calcium silicate material. TRIPLE INSULATED for electrical safety. EASY TO MOUNT on any wall (Installation hardware Included). Enjoy the beautiful sleek PAINTABLE DESIGN which blends in with any décor.
- NO FAN and QUIET: 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.
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 should I look for in an electric space heater for a 400 sq ft room?
Look for a heater with at least 1,500 watts of power to efficiently warm a 400 sq ft space. Ensure it has adjustable thermostat settings and safety features like overheat protection. Consider portability and noise level, especially if you plan to use it frequently.
How do ceramic and infrared heaters compare for this room size?
Ceramic heaters heat the air quickly and are ideal for small to medium rooms like 400 sq ft. Infrared heaters warm objects directly, providing more consistent heat but may take longer to heat the entire room. Both are energy-efficient, but ceramic heaters are often quieter.
Are there specific features that improve heating efficiency?
Look for heaters with oscillation to distribute heat evenly across the room. A programmable timer or eco-mode can help save energy by adjusting heat output. Some models also include remote controls for convenience.
How much should I expect to spend on a quality heater?
A good electric space heater for a 400 sq ft room typically costs between $50 and $150. Higher-priced models often include advanced features like smart home integration or quieter operation. Budget-friendly options can still provide adequate heating but may lack extra features.
Are electric space heaters safe to use overnight?
Modern heaters with safety certifications like UL or ETL are generally safe for overnight use. Look for models with tip-over and overheat protection to minimize risks. Avoid using extension cords and place the heater on a flat, stable surface.
How do I determine the right size heater for my room?
A general rule is 10 watts per square foot, so a 400 sq ft room needs a 1,500-watt heater. Check the manufacturer’s recommended room size for accuracy. Larger rooms may require multiple heaters or a higher-capacity model.
What are the pros and cons of oil-filled radiators for this space?
Oil-filled radiators provide steady, long-lasting heat and are silent, making them great for bedrooms. However, they take longer to warm up and can be bulkier than other types. They’re ideal for prolonged use but less suited for quick spot heating.
Can an electric space heater help reduce my energy bills?
Yes, using a space heater to warm only the room you’re in can lower overall heating costs. Look for energy-efficient models with eco-modes to maximize savings. Avoid overheating by setting the thermostat to a comfortable but not excessive temperature.