Comparison: Best Space Heater 400 Sq Ft (Updated | Dec 16th)
Tired of watching your heating bills skyrocket just to keep one room comfortable? You’re not alone. Finding the perfect space heater for a 400-square-foot area can feel like navigating a maze of options, from ceramic to infrared, with safety features and energy efficiency to consider. That’s why we’ve done the heavy lifting for you, testing and comparing the top contenders on the market. Get ready to discover which space heater will transform your chilly space into a cozy haven without breaking the bank or compromising on safety.
Editor’s Choice
Best for a specific purpose
- Best for dual heat plus humidifier: Dr Infrared Heater DR-998
- Best for original infrared power: Dr Infrared Heater Portable Space Heater
- Best for 3d flame ambiance: Uthfy 32″ Space Heater for Large Room
- Best for 360° room coverage: Landeagle Space Heaters for Large Room
- Best for three-side heating: Uthfy 1500W Space Heaters for Indoor Use
- Best for hedgehog heating tech: Ballu Convection Panel Heater
- Best for slim tower oscillation: Comfort Glow Oscillating Ceramic Tower Heater
- Best for dual motor efficiency: Dreo Space Heater for Large Room
- Best for quiet panel heating: Ballu Convection Panel Space Heater for Large Room
- Best for ultra quiet operation: Dreo Space Heater Large Room
Product Comparison: Best Space Heater 400 Sq Ft
Dual Heat Plus Humidifier
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 Infrared Power
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)
3D Flame Ambiance
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° Room Coverage
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
Three-Side Heating
Uthfy 1500W Space Heaters for Indoor Use, 26 Inch Convection Electric Heater, 3 Sides Heating, 12H Timer, Temperature Adjustable 50-95°F, Tip-Over & Overheat Protection, Heaters for Large Room
Uthfy
- Efficient & Customizable Heating: Equipped with 3 heating modes — Low (1000W), High (1500W), and Eco — this electric convection heater allows flexible temperature adjustment from 50°F to 95°F. Efficiently covers 300-400sq.ft, perfect for living rooms, bedrooms, and garages, ensuring consistent and comfortable warmth in every corner
- Fast & Wide Heat Distribution: Featuring advanced mica heating technology and enlarged heating tubes, this heater achieves up to 99% electric-to-heat conversion efficiency, delivering stronger and faster warmth within just 2 seconds. With its three-sided heating design (front, rear, and top) and 180° wide heat flow, it provides broader coverage and better heating performance than ordinary heaters — ideal for large rooms and open spaces
- All-Round Safety Protection:Crafted with V0-grade flame-retardant materials and equipped with multiple safety features: overheat protection, tip-over auto shut-off, child lock, and timer function. Safe for families with kids or pets, allowing worry-free operation day and night.
- Smart Control & Quiet Comfort:Easily adjust settings via the included remote control or LED touch panel. The large digital display shows the real-time room temperature, and the screen-off option prevents light disturbance at night — perfect for quiet and comfortable sleep.
- Portable Design & Dual Functionality:Designed with 4 smooth-rolling wheels and dual carrying handles for easy movement between rooms. The handles double as towel racks to warm or dry clothes — bringing both warmth and convenience to your daily life.
Hedgehog Heating Tech
Ballu Convection Panel Heater,1500W Space Heater for Large Room Indoor use with Programmable Thermostat,WiFi App Control,Smart Quiet,Works with Alexa,Black
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
Slim Tower Oscillation
Comfort Glow Oscillating Ceramic Tower Heater, 750W/1500W, Portable with Thermostat, Safety Shut Off, Heats Up To 400 Sq. Ft. – Indoor Oscillating Space Heater for Home, Bedroom, Office
Comfort Glow
- OSCILLATING HEAT COVERAGE: Enjoy effective room heating with 90° oscillation, distributing warmth evenly for up to 400 sq. ft.
- DUAL HEAT SETTINGS: Adjustable 750W/1500W heat settings and thermostat offer customized warmth and energy efficiency for any indoor space.
- PORTABLE & COMPACT DESIGN: Lightweight 18″ ultra-slim tower design with a convenient carry handle, making it easy to move between rooms. Approx. size 17.7″ H x 5.5″ W x 6.7″ D.
- SAFETY-FIRST FEATURES: Designed for worry-free use with overheat protection and tip-over shut-off, ensuring secure heating in any room.
- ALL-SEASON VERSATILITY: Use as a fan-only for cool air in warm months and switch to heat mode in winter for year-round comfort.
- FAST, POWERFUL HEATING: Equipped with dual fans and a ceramic heating element for rapid, efficient heating throughout larger spaces.
- SIMPLE TOP-MOUNT CONTROLS: Convenient top-mounted control panel lets you easily adjust settings.
- IDEAL FOR INDOOR USE: Perfect as a space heater for bedrooms, offices, or living rooms, giving you comfortable warmth wherever needed.
- ENERGY-EFFICIENT CERAMIC HEATER: Ceramic heating element warms up quickly, lowering energy consumption while delivering lasting comfort.
Dual Motor Efficiency
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.
Quiet 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
Ultra Quiet Operation
Dreo Space Heater Large Room, 30″ Electric Heaters with Remote, 120° Oscillation, Adjustable Thermostat, 5 Heat & 3 Fan levels, 8 Safety Protections, 25dB Quiet, 1-12H Timer, Heater for Office, Black
Dreo
- Powerful and Widespread Heating: Experience instant and efficient warmth with Dreo’s 30″ ceramic heater featuring a 308mm large PTC element, upgraded Hyperamics thermal design, and 30°-60°-90°-120° customizable oscillation, perfect for large rooms up to 300 ft². For optimal performance, please ensure a stable voltage environment in your home.
- All-around Safety: Stay warm this winter with peace of mind. Our heaters for indoor use offers 8 comprehensive protections, including V0 flame-retardant material, cool-touch housing, FortPlug, thermal insulated wiring, child lock, 45° tip-over protection and overheat protection, all certified by ETL.
- Heat the Way You Like: This electric space heater offers 9 comfort levels to suit your needs. Choose from 5 heat levels and ECO mode for optimal warmth, or switch to 3 fan levels to create air circulation.
- Precise Temperature Control: Powered by advanced controllable silicon technology, this energy-efficient space heater provides precise temperature control and up to 50% energy savings, bringing you all-day comfort without worrying about your electricity bills.
- 25 dB Extreme Quietness: Enjoy a warm, comfortable environment without disturbance. DREO’s innovative airflow design reduces noise to an ultra-quiet 25 dB, making this heater for bedroom ideal for a peaceful night’s sleep or a quiet, focused workspace.
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 features are most important for heating a 400 sq ft room?
Look for a heater with adjustable thermostat and multiple heat settings for better control over energy use and comfort. A programmable timer and remote control add convenience, while safety features like tip-over and overheat protection are essential for peace of mind.
How much wattage do I need to effectively heat 400 square feet?
For a 400 sq ft area, you’ll generally need a heater with at least 1,500 watts of power. While this is the maximum allowed for a standard 120V outlet, the heater’s efficiency and design are just as critical for effectively distributing heat throughout the entire space.
What’s the difference between ceramic, infrared, and oil-filled heaters?
Ceramic heaters are fast-heating and compact, ideal for quickly warming a person or small area. Infrared heaters provide instant, directional heat to objects and people, making them feel warmer faster. Oil-filled heaters are silent and radiate heat for a long time, even after turning off, making them great for all-day, stable warmth.
Are space heaters for this room size expensive to run?
Running a 1,500-watt heater continuously can be costly, so energy efficiency is key to value. Look for features like an eco-mode or a smart thermostat that automatically adjusts power to maintain a set temperature, which can significantly reduce operating costs.
How can I determine the best value for my money?
The best value isn’t always the lowest price, but a balance of upfront cost, energy efficiency, and durability. Compare warranties and customer reviews to gauge long-term reliability, and consider models with energy-saving features that will lower your electricity bill over time.
What safety features should I prioritize for a large space heater?
For any heater, tip-over and overheat protection are non-negotiable for safety. Additionally, ensure the heater has a sturdy base and a cool-to-the-touch exterior to prevent burns, especially if you have children or pets.
Is noise level a significant factor to consider?
Yes, noise level is a crucial factor depending on where you plan to use the heater. Fan-forced ceramic heaters can be noisy, while oil-filled and most infrared models operate almost silently, making them much better choices for bedrooms or quiet offices.