The electric fireplace vs space heater decision is not really about heat. Watt for watt, an electric fireplace and a plug-in space heater turn electricity into the same amount of warmth and cost the same per hour to run. What separates them is price, installation, everyday safety, looks and the ability to run a flame with no heat. Below we compare the two using Amantii manuals, U.S. Energy Information Administration (EIA) prices and fire safety guidance. For fireplace types and sizing, see our electric fireplace buying guide.
Electric fireplace vs space heater: the short answer
- Heat: the same at the same wattage. A 1,500 W fireplace heater and a 1,500 W space heater put out the same warmth.
- Running cost: also the same, about 27 cents an hour on high at the latest U.S. average electricity price (our math, below).
- Upfront cost: a space heater typically costs far less. The Amantii fireplaces we carry start at $968.
- Flame-only use: only the fireplace gives you a flame picture, with or without heat.
- Placement: a space heater moves from room to room. A fireplace is mounted or built in.
Is an electric fireplace a space heater?
Partly. Its heating part is a fan-forced electric heater, but it is a fixed appliance. Amantii’s WM-FM manual lists those units as built-in or wall mount appliances tested to UL Standard 2021 for fixed and location dedicated electric room appliances, rated 1,500 W max on 120 V. The heater has three settings: low at 750 W, high at 1,500 W, and AUTO, which holds a temperature you set on the remote.
The other part is the LED flame. Amantii’s FAQ says most of its fireplaces can run with the heat on or off, and the manuals list the draw with no heater: 25 W for the WM-FM models and 15 W for the 26 inch Traditional XtraSlim (per its manual). A space heater has no equivalent mode.
Do electric fireplaces heat as well as space heaters?
Yes, at the same wattage. The EIA’s Btu conversion table puts 1 kilowatthour at 3,412 BTU, so every watt becomes about 3.412 BTU per hour of heat. By our math, 750 W gives about 2,560 BTU per hour and 1,500 W about 5,120.
Amantii’s FAQ says most of its fireplaces produce about 5,000 BTU of supplemental heat, and many of our listings show 4,800 BTU. If your space heater is also rated 1,500 W (check its label), it makes the same heat. A wider fireplace is not hotter, either: the WM-FM manual lists 1,500 W max for every size from 26 to 88 inches.
The difference is delivery. A fireplace pushes warm air forward from a fixed spot, which suits the room you sit in every evening. A portable heater can sit right by your chair, which may feel warmer at the same output. Amantii’s FAQ adds that select models offer hardwire upgrades to 10,000 BTU or more; our buying guide covers heat output and 240V options.
Electric fireplace cost to run per hour
Running cost is kilowatts times hours times your rate. The EIA’s Electric Power Monthly Table 5.6.A puts the average U.S. residential price at 18.31 cents per kWh for July 2026, with California at 33.61 cents and Washington at 14.71 cents. Our math:
| Setting | Power | U.S. average | California | Washington |
|---|---|---|---|---|
| Fireplace or heater, high | 1,500 W | About 27 cents/hr | About 50 cents/hr | About 22 cents/hr |
| Fireplace or heater, low | 750 W | About 14 cents/hr | About 25 cents/hr | About 11 cents/hr |
| Fireplace flame only (WM-FM) | 25 W | About half a cent/hr | Under 1 cent/hr | Under 1 cent/hr |
Running either one on high for 4 hours a night for 30 nights comes to about $33 at the U.S. average (our math). Amantii’s FAQ quotes older per-hour figures lower than these, so use the rate on your own bill. If you are also weighing gas, see electric fireplace vs gas fireplace cost.
Safety: fixed fireplace vs portable heater
The heater in a fireplace follows the same rules as any space heater. The U.S. Fire Administration says to keep anything that can burn at least 3 feet from heat sources and to turn space heaters off when leaving the room or going to bed, and its space heater pictograph says to plug them directly into wall outlets, never into an extension cord or power strip. NFPA gives the same advice, and its 2020 to 2024 figures show space heaters and heating stoves caused 30% of home heating equipment fires but 73% of the deaths.
A fireplace removes some portable risks: it is secured to or in the wall, so it will not get knocked over or shoved against a bed, and it uses a planned outlet or hardwired circuit. The manuals still set rules:
- Keep furniture, bedding and curtains at least 3 feet from the front (WM-FM manual).
- Use a 15 amp, 120 V grounded circuit, preferably dedicated (WM-FM manual).
- Avoid an extension cord, which will overheat and cause a fire (Traditional XtraSlim manual).
- Do not add an outside timer or other device that switches the heater on automatically; use the built-in timer, which turns the fireplace off after 30 minutes to 8 hours (WM-FM manual).
For sleeping areas, see our guide to an electric fireplace in a bedroom.
Which should you buy?
Choose a space heater if
- You need occasional heat, or heat in different rooms on different days.
- You rent and cannot mount anything.
- Budget matters most and looks do not.
Choose an electric fireplace if
- You want a year-round focal point for a living room, bedroom or TV wall, with or without heat.
- You want zone heat in one room without a cord across the floor.
- You want a thermostat, timer and remote or app built in.
Want something you can move later without opening a wall? An electric fireplace TV stand sits on the floor and plugs in like furniture.
Amantii electric fireplaces with published heat specs
Figures and prices come from our product listings at the time of writing.
| Model | Install | Heat (per listing) | Price |
|---|---|---|---|
| Zero Clearance 26 in | Built-in firebox | 4,800 BTU, 400 to 500 sq ft | $968 |
| Symmetry 42 in Basic | Built-in linear | 4,800 BTU, 400 to 500 sq ft | $1,099 |
| Traditional XtraSlim 26 in | Mount or recess in a 2×4 wall | 750 W low, 1,500 W high, up to 400 sq ft | $1,299 |
| WM-FM 34 in | Wall mount or recess | Low, High, Auto; 400 to 500 sq ft | $1,498 |
| Zero Clearance 24 in | Wall, corner or built-in | 4,800 BTU, 400 to 500 sq ft | $1,699 |
| Symmetry Lumina 42 in | Built-in linear | 1,500 W, up to 400 sq ft, thermostat 59 to 82 F | $2,099 |
The WM-FM 34 inch listing does not publish a wattage; Amantii’s manual lists 1,500 W max for the series. Amantii sells through dealers, not direct, so there is no factory price to compare. Call 866-777-2590 (Monday to Friday, 9AM to 6PM PST) to confirm specs. Shipping is free on orders of $999 or more and $200 flat below that; see our return and refund policy and our Amantii brand page. Flames but no heat? Our electric fireplace troubleshooting guide covers the fixes.
Frequently asked questions
Is an electric fireplace a space heater?
Its heater works like one, usually 1,500 W max on Amantii models. Unlike a portable heater, it is a fixed appliance, and its LED flame can run with the heat off.
Do electric fireplaces heat as well as space heaters?
Yes, at the same wattage. A 1,500 W fireplace and a 1,500 W space heater both give about 5,120 BTU per hour.
What is the electric fireplace cost to run per hour?
About 27 cents on high (1,500 W) and 14 cents on low (750 W) at the July 2026 U.S. average of 18.31 cents per kWh, by our math. Flame-only mode on the WM-FM is about half a cent an hour.
Is an electric fireplace safer than a space heater?
It is secured in place, but the same rules apply: 3 feet of clearance, a wall outlet or hardwired circuit, no extension cord, and heat off when you leave the room or go to bed.
