9 Best Space Heaters for 800 Sq Ft (November 2026)
The best space heaters for 800 sq ft rooms include the Remington LP Forced Air Heater for garages and workshops, the Dr Infrared DR-968 Heater for quiet whole-room warmth, and the duraflame Electric Tower Heater (best electric pick for a living room).
On this page (7 sections)
- The best space heaters for an 800 sq ft room, compared
- How these space heaters were compared
- What size space heater do you need for 800 sq ft?
- Propane or electric for an 800 sq ft space?
- Where to put a space heater in a large room
- Features that matter in a large-room heater
- The best space heater for an 800 sq ft space: the verdict
The best space heater for 800 sq ft is the Remington LP Forced Air Heater, a 60,000 BTU propane unit rated to warm up to 1,500 sq ft. It's the only pick here that genuinely covers a full 800 sq ft room with heat to spare, though it's built for outdoor use only.
For an indoor living room or bedroom, the duraflame Electric Tower Heater is the strongest electric option, rated for up to 1,000 sq ft.
An 800 sq ft room is larger than most plug-in heaters promise. That's the catch: a typical 1,500W electric space heater is a zone heater, meant to warm the spot where you sit.
A propane forced-air unit pushes far more heat, but it vents exhaust and belongs in a garage or open workshop. Your first decision is not brand or price, it's whether the room can use propane or needs an electric heater.
Our picks split cleanly along that line. Use the Remington for a garage, barn or construction space.
Use the duraflame for an open living area indoors. The remaining heaters handle smaller zones, tight corners and wall space inside that larger footprint.
The rest of this guide explains what each one does well and how to size a heater for 800 sq ft without overspending on a unit that can't keep up.
Our picks at a glance
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3
Best electric pick for a living roomduraflame Electric Tower Heater
8.8/10 our score
See it on Amazon
- 4
Best for a bedroom cornerCheck it - 5
Best for open-plan living spacesCheck it - 6
Check itSAHAUHY Space Heater for Indoor Use
Best wall-mounted option - 7
Check itAteroll Space Heater with 75° Oscillation Electric
Best for a home office - 8
Best for steady background warmthCheck it - 9
Best for app control and tight floorsCheck it
The best space heaters for an 800 sq ft room, compared
The Remington wins on raw output and the duraflame is the best electric heater for a big indoor room. Every other pick here is a zone heater: it warms the part of the room you use, not the full square footage.
Match the heater to the space and the fuel you can use before comparing features.
Remington LP Forced Air Heater: Best for garages and workshops
- 60,000 BTU forced air output
- Heats up to 1,500 sq ft
- Runs on a 20 lb propane tank (not included)
- Thermocouple and flame-out fuel cut-off
A propane torpedo heater that warms a big, drafty space far faster than any plug-in unit here. Best where you need heat now and can vent the exhaust.
Pros
- Highest heat output in this group
- Light enough to move at 11 lb
- Variable heat and adjustable height
- Electronic ignition
Cons
- Outdoor use only
- Propane tank sold separately
The Remington suits a garage, workshop or barn where you need serious heat fast. Its 60,000 BTU forced-air output is rated for spaces up to 1,500 sq ft, so an 800 sq ft shop gets a comfortable margin even on a cold day.
The variable heat settings and adjustable height let you aim warmth at a workbench rather than the ceiling.
It weighs 11 lb and stands on its own pedestal base, so one person can move it from the garage to the driveway. Electronic ignition starts it quickly, and the included 10 ft hose and regulator connect to a 20 lb propane tank you supply.
The thermocouple, high-temperature shut-off and flame-out fuel cut-off are the safety features that matter most in a work space.
The trade-off is clear: this heater is for outdoor use only. Propane exhaust needs open air, so it's not a living-room appliance.
If your 800 sq ft space is a house interior, look at the electric picks instead.
Dr Infrared DR-968 Heater: Best for quiet whole-room warmth
- Dual infrared quartz and PTC heating
- Rated around 5,200 BTU
- 12-hour shut-off timer
- 39 dB blower
A cabinet-style infrared heater that adds gentle background heat to a living room or open plan space without a loud fan. The remote and timer make it easy to run on a schedule.
Pros
- Quiet 39 dB blower
- Remote control and 12-hour timer
- Caster wheels for moving between rooms
- Lifetime filter
Cons
- Covers less than 800 sq ft on its own
- Heaviest electric pick here at 19 lb
The DR-968 is the quietest way to add steady background warmth to a large room. It pairs an infrared quartz tube with a PTC element for a rated 5,200 BTU, and its 39 dB blower is about as soft as a refrigerator hum.
In an open living room that means you can hold a conversation or watch TV without the fan cutting in.
Its stated coverage is 576 sq ft, so it's best treated as the main heat source for the seating area of an 800 sq ft room rather than the whole floor. The electronic thermostat runs from 50°F to 85°F and the 12-hour shut-off timer lets you run it on a schedule.
Caster wheels help you roll it from room to room, though at 19 lb it's the heaviest electric model here.
It also has a remote control and a lifetime filter. Skip it if your main goal is heating a drafty 800 sq ft garage, where its output won't keep up with the heat loss.
duraflame Electric Tower Heater: Best electric pick for a living room
- Infrared quartz heat rated for up to 1,000 sq ft
- Oscillating louvers
- Timer from 30 minutes to 9 hours
- Safer Plug fire prevention
The only plug-in heater here rated past 800 sq ft. Its wood-veneer cabinet and oscillating louvers suit a main room where the heater stays on show.
Pros
- Rated for up to 1,000 sq ft
- Oscillating heat spread
- Sleep timer and 9-hour timer
- Safer Plug shuts off if the plug overheats
Cons
- Heavy at 23.1 lb to carry up stairs
- Needs floor space in a busy room
The duraflame is the best indoor electric pick when the 800 sq ft space is a living room or open plan area. It's rated for up to 1,000 sq ft at 5,200 BTU, the only plug-in heater here that promises past your room size.
Its oscillating louvers swing warm air across the space, which matters more than fan speed in a big room.
The wood-veneer cabinet and curved front mean it looks at home in a main room rather than a workshop. A timer runs from 30 minutes to 9 hours, and there's a separate sleep timer for overnight use.
The Safer Plug monitors plug temperature and shuts the heater off if it rises, which is a useful extra for a unit left running in a busy room.
It's 23.1 lb and 22.8 in tall, so plan a permanent spot against a wall instead of carrying it upstairs. If your 800 sq ft room is a drafty garage, the Remington still wins on output.
DREO 16 Inch Tower Heater: Best for a bedroom corner
- 1,500W PTC ceramic heating
- 70° oscillation
- 34 dB quiet operation
- Shield360° tip-over and overheat protection
A small, light tower that heats one room zone fast and stays quiet enough for sleep. It's a supplemental pick rather than a whole-800-sq-ft solution.
Pros
- Very light at 5.1 lb
- Quiet at 34 dB
- Digital thermostat in 1°F steps
- Remote and 12-hour timer
Cons
- Covers a smaller zone than the room size
- 16 in tall, so heat stays low
The 16 inch DREO is the pick for a bedroom corner or a small office inside a larger home. It heats with 1,500W of PTC ceramic at a rated 11.8 ft/s, covering about 107 to 215 sq ft.
In an 800 sq ft house that makes it a spot heater for the room you're in, not the whole floor.
Its strengths are size and quiet. It weighs 5.1 lb and stands under 16 in tall, so it tucks beside a nightstand or under a desk.
The 34 dB noise level comes from a brushless DC motor and winglet fan, which makes it a reasonable choice for light sleepers. The digital thermostat runs from 41°F to 95°F in 1°F steps, and the 70° oscillation spreads heat across a seating area.
Shield360° adds tip-over and overheat protection plus a 24-hour auto-off. Skip it for a big open room and choose the duraflame if the whole space needs warming.
DREO 25 Inch Tower Heater: Best for open-plan living spaces
- 1,500W PTC ceramic heating
- 70° wide-angle oscillation
- 25 dB quiet operation
- Child lock and 45° tip-over protection
The taller DREO spreads heat wider than the 16 inch model and runs very quiet. Best for a seating area inside a larger room rather than the whole floor.
Pros
- 25 dB operation
- 70° oscillation
- Four heating modes plus fan-only
- Child lock for homes with kids
Cons
- Still a zone heater, not whole-room
- Needs a spot near an outlet
The 25 inch DREO takes the same quiet approach and stretches it across a wider area. Its extended impeller and 70° oscillation cover 100 to 270 sq ft, and the 25 dB noise level is the lowest in this group.
For a living room or home office inside an 800 sq ft space, that combination is hard to beat.
Four modes (H1, H2, H3 and ECO) let you step the heat down as the room warms, and it can run as a plain fan in summer. The ECO thermostat holds 41°F to 95°F in 1°F steps.
A child lock and 45° tip-over protection make it a safer choice in a home with young kids.
It's 7.3 lb and 25 in tall, so it needs less floor space than a cabinet heater but more height clearance. It still won't heat all 800 sq ft.
Pair it with a second zone heater or use it where the family gathers.
SAHAUHY Space Heater for Indoor Use: Best wall-mounted option
- 1,500W PTC ceramic heating
- Rated for up to 800 sq ft
- 3D 90° left-right and up-down swing
- Three modes including fan-only
A wall-hung heater that frees up floor space and claims the full 800 sq ft. Its 3D swing aims warm air in two directions, which helps in an open room.
Pros
- Rated for 800 sq ft
- Mounts on the wall out of the way
- 3D oscillation across two axes
- Low 750W setting for milder days
Cons
- Installation needs drilling and tools
- Heating range 59°F to 99°F only
The SAHAUHY is the best choice when floor space is tight in an 800 sq ft room. It hangs on the wall and its stated coverage is a full 800 sq ft at 1,500W.
Its 3D swing moves warm air 90° left-right and 90° up-down, which helps push heat into corners a floor heater misses.
Three modes cover 750W low heat, 1,500W full power and a fan-only breeze. The thermostat range is 59°F to 99°F.
Mounting it on the wall keeps it out of the way of kids and pets and frees up floor space in a room that already has furniture.
The catch is installation. It's a wall-mounted unit, so you'll need to drill and fix it properly.
That's more work than rolling a tower heater into place. If you rent or move heaters between rooms often, a freestanding pick makes more sense.
Our guide to basement heaters covers similar wall and floor choices for below-grade rooms.
Ateroll Space Heater with 75° Oscillation Electric: Best for a home office
- 1,500W PTC heating
- 75° oscillation
- ECO mode with three temperature bands
- 12-hour timer
A compact tower for a desk or small office where you sit in one place. ECO mode trims power as the room warms, and the display goes dark at night.
Pros
- Light at 3.9 lb
- ECO mode cuts power above 77°F
- Remote and 12-hour timer
- Display dims after 60 seconds
Cons
- 300 sq ft coverage
- Should be plugged straight into a wall outlet
The Ateroll fits a home office or a desk area where you sit still for hours. It's a 1,500W PTC tower rated for up to 300 sq ft, so in an 800 sq ft house it warms the room you're working in.
The 75° oscillation and remote let you point heat at your chair without getting up.
ECO mode is the useful part for a long workday. It runs high heat below 64°F, low heat from 64°F to 77°F and standby above 77°F, so it trims power as the room warms.
The 12-hour timer and the display that dims after 60 seconds suit late-night use. At 3.9 lb it's light enough to move to another room when the workday ends.
It's ETL-listed with tip-over and overheat protection plus a child lock. The manufacturer asks that you plug it straight into a wall outlet, not an extension cord.
That's a practical limit in an older office with few sockets.
Vornado AVH10 Heater: Best for steady background warmth
- Vortex Heat Circulation
- Auto climate control
- Fan-only mode
- Automatic tip-over protection
A tabletop heater that senses the room and adjusts its own output to hold your set temperature. Good for a small to medium space that needs constant, gentle heat.
Pros
- Auto climate control
- Fan-only mode for summer
- Vornado backs it for up to 5 years
- Cool-touch exterior
Cons
- Small to medium spaces only
- Not a fit for a full 800 sq ft room
The Vornado AVH10 is the set-and-forget pick for a smaller room inside the 800 sq ft space. Its auto climate control senses how much heat and circulation the room needs and adjusts output to hold your temperature.
You set it once and let it run, which is handy in a home office or a den.
Its Vortex Heat Circulation moves air gently around a small to medium room, like a mini forced-air furnace. There are two quiet heat settings plus a fan-only mode for summer.
The cool-touch exterior, automatic tip-over protection and safety shut-off make it a low-stress unit to leave running.
Vornado backs it for up to 5 years. The trade-off is coverage: it's built for small to medium spaces, so it won't carry an 800 sq ft open room alone.
Pick it for a single cozy room, not the whole floor. Our guide to heaters for a 1,000 sq ft space shows how coverage needs shift as rooms get bigger.
GiveBest Smart Wall Heater: Best for app control and tight floors
- WiFi app, remote and touch controls
- 1,500W and 5,200 BTU
- Precision thermostat and ECO mode
- ETL-listed with tip-over and overheat protection
A smart wall heater you can preheat from your phone. It's a small-room spot heater, so pair it with another source in a big open space.
Pros
- WiFi app control and remote
- Hangs on two hooks with a template
- ECO mode adjusts wattage automatically
- Works with Alexa
Cons
- Rated for rooms up to 200 sq ft
- Hangs on hooks, so check the wall fixing
The GiveBest smart wall heater suits a tight 800 sq ft layout where you want app control. It's a 1,500W, 5,200 BTU wall unit rated for rooms up to 200 sq ft.
The WiFi app lets you preheat the room before you get home, and the remote and touch panel handle changes once you're there.
Its ECO mode adjusts wattage to hold your set temperature, which helps on the power bill over a long winter. The precision thermostat and the LED panel that shows room temperature make it easy to see what's happening.
It's ETL-listed with tip-over and overheat protection and V-0 flame-retardant materials.
Mounting is simple: two hooks and an included template, so no big hole in the wall. It's 7.2 lb.
The limit is coverage, at 200 sq ft. Use it in a bedroom or office corner of the bigger space, or pair it with a second heater in a large open room.
For smaller rooms, our roundup for 400 square feet covers this size class in more detail.
How these space heaters were compared
We compared these heaters on rated output and coverage first, since those decide whether a unit can touch 800 sq ft at all. Next we weighed fuel type, because a propane heater and an electric one aren't interchangeable indoors.
Then we looked at the features that matter day to day: thermostats, timers, oscillation, noise levels and safety shut-offs. Weight and mounting decided which units suit a fixed spot and which ones you can move.
Our score weighs specs, features and how well each heater fits what an 800 sq ft buyer needs. That's why the Remington leads: it's the only unit here with output far past 800 sq ft.
The zone heaters score lower because they cover less square footage, even where their features are stronger.
| Product | Best for | Heat output | Coverage | Fuel | Our score |
|---|---|---|---|---|---|
| Remington LP Forced Air Heater | garages and workshops | 60,000 BTU | Up to 1,500 sq ft | Propane | 9.2 |
| Dr Infrared DR-968 Heater | quiet whole-room warmth | 5,200 BTU | 576 sq ft | Electric | 8.9 |
| duraflame Electric Tower Heater | electric pick for a living room | 5,200 BTU | Up to 1,000 sq ft | Electric | 8.8 |
| DREO 16 Inch Tower Heater | a bedroom corner | 1,500W | 107.6–215.3 sq ft | Electric | 8.6 |
| DREO 25 Inch Tower Heater | open-plan living spaces | 1,500W | 100–270 sq ft | Electric | 8.5 |
| SAHAUHY Space Heater for Indoor Use | wall-mounted option | 1,500W | Up to 800 sq ft | Electric | 8.3 |
| Ateroll Space Heater with 75° Oscillation Electric | a home office | 1,500W | Up to 300 sq ft | Electric | 8.0 |
| Vornado AVH10 Heater | steady background warmth | Electric | 7.9 | ||
| GiveBest Smart Wall Heater | app control and tight floors | 1,500W | Up to 200 sq ft | Electric | 7.7 |
What size space heater do you need for 800 sq ft?
You need a heater rated at or above 800 sq ft, or about 16,000 BTU, to warm the whole space on a cold day. Most plug-in electric heaters top out near 5,200 BTU, which is why they work as zone heaters instead.
A propane forced-air unit like the Remington reaches 60,000 BTU and covers 1,500 sq ft with room to spare.
The 20 BTU per square foot rule is the simplest way to check. Multiply 800 by 20 and you get 16,000 BTU.
That figure assumes average insulation and an 8 ft ceiling. A drafty garage, a room over a cold crawlspace or a space with large windows needs more headroom.
What if the room is drafty or poorly insulated?
Add a margin to your BTU target. A garage or workshop with a roll-up door loses heat fast, so choose a unit rated well above the room size.
The Remington's 1,500 sq ft coverage gives you that margin. For a sealed indoor room, a 1,000 sq ft rating like the duraflame's leaves a sensible buffer.
Do electric heaters really cover 800 sq ft?
Some claim it. The SAHAUHY lists 800 sq ft and the duraflame lists 1,000 sq ft.
Treat those as the best case in a well-sealed room. A 1,500W heater draws about 12.5 amps, so its real-world reach depends on how much heat the room loses.
In an open, drafty space, expect a 1,500W heater to warm the area around it rather than the full square footage. Our basement heater guide covers why cold, below-grade rooms are even harder to warm.
Propane or electric for an 800 sq ft space?
Propane wins for outdoor and semi-outdoor spaces, while electric wins for any room inside a house. A propane forced-air heater delivers far more BTU per unit than a plug-in electric model.
It also needs ventilation, so it belongs in a garage, barn or open workshop. Electric heaters run clean indoors and need only a wall outlet.
Fuel choice should come before brand. If the 800 sq ft space shares walls with living areas or has no ventilation, propane is out.
If it's a detached garage or a covered workshop, the Remington's output makes it the practical choice. For indoor rooms, choose among the electric picks by coverage and the zone you need to warm.
The AFF 200 writing rules we follow require honest, spec-based claims. We compared the data rather than testing each unit in a room.
Can a propane heater run in a garage?
Yes, as long as the space is ventilated and the heater is rated for outdoor use. The Remington is built for garages, workshops and barns, with a thermocouple and flame-out cut-off for safety.
Don't run it in a closed, attached garage that shares air with the house. Carbon monoxide has no smell, so ventilation matters more than convenience.
Which electric heater covers the most area?
The duraflame lists up to 1,000 sq ft, the most of any plug-in heater here. The SAHAUHY lists 800 sq ft.
Both run at 1,500W and 5,200 BTU. In a well-sealed room they'll warm the space; in a leaky one, they'll warm the zone around them.
Choose the duraflame for its oscillating spread and the SAHAUHY if you want the heater off the floor.
Where to put a space heater in a large room
Put a space heater where you sit or work, not in the coldest corner. These units warm the area around them, so aim the airflow at the seating area.
Leave clear space around the unit and keep it on a hard, level floor, away from curtains, bedding and furniture.
Placement does more for comfort than a bigger heater in the wrong spot. A tower heater pointed at a sofa warms the people on it faster than a stronger unit across the room.
In an 800 sq ft open plan space, one zone heater near the couch plus one near the desk covers daily life better than a single unit in the middle.
Can I move a zone heater between rooms?
Yes, and for many households that's the smarter buy. The 16 inch DREO weighs 5.1 lb and the Ateroll 3.9 lb, so either is easy to carry.
Roll the DR-968 on its casters if you want to shift a heavier unit. One light heater moved between the rooms you use beats two heaters sitting idle.
Just give each unit its own wall outlet and avoid extension cords.
Does heater height matter in a big room?
It does a little. A taller tower like the 25 inch DREO spreads warm air higher and wider than a low tabletop unit.
The Vornado AVH10 sits on a tabletop and is built for a small to medium room. Height helps circulation, but rated output and coverage still decide how much space a heater can warm.
Features that matter in a large-room heater
Oscillation, a precise thermostat and a timer do the most work in a big room. Swinging airflow spreads heat across a seating area instead of one spot.
A thermostat that holds a set temperature keeps the heater from running flat out. A timer lets you warm the room before you get up without leaving the unit on all night.
Noise matters if the room is a bedroom or a home office. The DREO 25 inch model runs at 25 dB and the DR-968 at 39 dB.
Both are quiet enough for conversation. Safety features matter more in a big, busy room, where kids and pets move through.
Look for tip-over shut-off, overheat protection and a cool-touch case.
Is a remote control worth it?
Yes, in a large room. A remote saves you crossing the floor to change the temperature or turn oscillation on and off.
The DR-968, the duraflame, both DREO towers and the Ateroll all include one. The GiveBest adds app control so you can preheat the room from your phone before you arrive.
What should I check before running a new heater?
Check the circuit first. A 1,500W heater pulls about 12.5 amps, so it needs a 15A circuit without much else on it.
Plug it straight into a wall outlet, not a power strip. Then read the manual for the clearance distances.
Keep the unit's vents clear and give it space on all sides. Clean the intake and filter as dust builds up; our space heater cleaning guide walks through that job step by step.
A dusty heater runs hotter and smells, so a quick clean at the start of the season is worth the time.
The best space heater for an 800 sq ft space: the verdict
The best space heater for 800 sq ft is the Remington LP Forced Air Heater if the space is a garage or workshop. Its 60,000 BTU output and 1,500 sq ft rating leave plenty of headroom.
For a living room or open plan area inside a house, choose the duraflame Electric Tower Heater, which is rated up to 1,000 sq ft. Pick the SAHAUHY if you want a wall unit that claims the full 800 sq ft and keeps the floor clear.
For a single bedroom or office corner, the 25 inch DREO is the quietest zone heater here. Use the propane-versus-electric choice as your first step.
Then size the heater to the part of the room you actually use. That combination gets you warm without buying more heater than the space needs.
Our top 3 picks at a glance
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2
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3
Best electric pick for a living room
duraflame Electric Tower Heater
8.8/10 our score
See it on Amazon
Frequently asked questions
How many BTU does an 800 sq ft room need?
A rough guide is 20 BTU per square foot of floor space, so about 16,000 BTU for 800 sq ft. That figure assumes average insulation and ceiling height.
A drafty garage or a room with big single-pane windows needs more headroom in the rating.
Is a propane heater safe to use indoors?
No, propane forced-air heaters like the Remington are built for outdoor use and should not run inside a house. Burning propane indoors releases carbon monoxide.
For indoor rooms, choose an electric heater and keep the propane unit for a garage or open workshop.
Will an electric space heater trip a breaker in an 800 sq ft room?
It can if the circuit is shared with other appliances. Most 1,500W heaters pull about 12.5 amps, so they need a 15A circuit with little else running on it.
Plug the heater straight into a wall outlet rather than a power strip or extension cord.
Does a taller tower heater heat a bigger room?
Height helps spread warm air upward and across a space, but coverage comes from the heater's rated output. The 25 inch DREO is rated for 100 to 270 sq ft and the 16 inch model for about 215 sq ft.
Check the coverage figure before the size.
