Electric fireplaces are one of the most-bought “heat” purchases every October, and the marketing often promises big bill cuts. The honest version: the heater is a 1,500 W space heater in a nice box, and the flame is nearly free. Whether it saves you money depends entirely on one thing — does it let you turn down the heat for the rest of the house? We’ll cover cost per hour, per evening and per season at your rate, heat mode versus flame only, four example households and a one-week test you can run yourself.
Quick answer
- Flame-only: usually a few dollars a season. Enjoy it guilt-free.
- Heat on high: about 26¢ an hour at $0.17/kWh (45¢ at $0.30, 60¢ at $0.40).
- 4 hours a night all winter on high: roughly $150 at $0.17/kWh, $270 at $0.30.
- Saves money? Usually yes in homes heated by electric baseboards or an electric furnace, only with a real whole-house setback in heat pump homes, and usually no in gas-furnace homes — where it’s a comfort purchase.
The only formula you need
Cost = watts ÷ 1,000 × hours × your rate ($/kWh).
Find your real rate on your bill: total supply + delivery charges ÷ kWh used. We use $0.17/kWh as an illustrative US average; many homes in the Northeast and California pay $0.25–$0.40.
Electric fireplaces have two very different modes:
- Heat on (usually 1,500 W high / 750 W low). This is where the money goes.
- Flame-only (LED effect, typically ~10–50 W). Ambience for pennies.
Most units have a built-in thermostat that cycles the heater once the room reaches the set temperature, so real-world draw on “high” is often less than 1,500 W every hour — which is exactly why measuring beats guessing.
Cost per hour by electricity rate (illustrative)
| Mode | Draw | $0.12/kWh | $0.17/kWh | $0.22/kWh | $0.30/kWh | $0.40/kWh |
|---|---|---|---|---|---|---|
| Heat high, continuous | 1,500 W | $0.18 | $0.26 | $0.33 | $0.45 | $0.60 |
| Heat low (or high cycling ~50%) | 750 W | $0.09 | $0.13 | $0.17 | $0.23 | $0.30 |
| Flame-only LED | ~25 W | $0.003 | $0.004 | $0.006 | $0.008 | $0.010 |
Heat output is fixed by watts: 1,500 W ≈ 5,100 BTU/h, no matter whether the box says infrared, quartz, fan-forced, or “3D flame.”
Season cost by hours per night (150 nights, $0.17/kWh)
| Use pattern | 2 h/night | 4 h/night | 6 h/night |
|---|---|---|---|
| Heat high, continuous (1,500 W) | ~$77 | ~$153 | ~$230 |
| Heat low or cycling (~750 W avg) | ~$38 | ~$77 | ~$115 |
| Flame-only (~25 W) | ~$1.30 | ~$2.55 | ~$3.80 |
Scale by your rate: at $0.30/kWh multiply by about 1.76; at $0.12 multiply by about 0.7.
Per-BTU: how a fireplace compares with your main heat
Electric resistance heat costs about $0.050 per 1,000 BTU at $0.17/kWh (1 kWh = 3,412 BTU). Here’s how common systems compare at illustrative prices — swap in your own:
| Heat source | Assumed price & efficiency | Cost per 1,000 BTU |
|---|---|---|
| Electric fireplace / space heater / baseboard | $0.17/kWh, 100% | ~$0.050 |
| Electric fireplace at $0.30/kWh | $0.30/kWh, 100% | ~$0.088 |
| Gas furnace | $1.50/therm, 95% | ~$0.016 |
| Heat pump | $0.17/kWh, seasonal COP 2.5–3 | ~$0.017–$0.020 |
| Propane furnace | $2.80/gal, 90% | ~$0.034 |
| Heating oil boiler/furnace | $4.00/gal, 85% | ~$0.034 |
What this means in plain English:
- Gas furnace or heat pump: fireplace heat costs roughly 2.5–3× more per unit of heat. It only pays off through a meaningful whole-house setback.
- Propane or oil: fireplace heat costs roughly 1.5× more at these prices — close enough that a disciplined setback can win. Run your own numbers; propane and oil prices swing.
- Electric baseboard, electric furnace, or wall heaters: the fireplace costs the same per BTU, so any setback in the rest of the home is pure savings.
When it actually saves money: the zone-heating test
The fireplace wins only when you heat one room instead of the whole house. Rule of thumb from energy agencies: setting the whole-house thermostat back helps meaningfully (DOE cites up to ~10% a year for a 7–10°F setback 8 hours a day — see our setback math guide for the ~1%-per-degree-per-8-hours rule). The honest playbook:
- Turn the central thermostat down 4–8°F during the hours you’re in one room.
- Run the fireplace’s own thermostat in that room.
- Close that room’s door if you can.
- Measure for a week (below) and compare your gas or electric usage to a similar-weather week.
If you won’t turn the main heat down, buy it for looks and use flame-only — that’s the cheap way to enjoy it.
Thermostat-location trap: if your central thermostat is in the same room as the fireplace, the fireplace warms the thermostat and the furnace shuts off — while bedrooms and bathrooms get cold. That can look like savings but may mean frozen-feeling rooms or, in winter extremes, pipe risk on exterior walls. Better: set the central thermostat back on a schedule, or use a smart thermostat with a remote sensor in another room.
Four worked households (illustrative, $0.17/kWh, 150-night season)
These use the setback rule of thumb and our per-BTU table. Real results depend on your house, weather, and habits — measure yours.
1. Ambience only (any heating system)
- Flame-only, ~25 W, 5 hours a night for 180 nights = ~22.5 kWh.
- Cost: about $4 for the season.
- Verdict: the cheapest way to enjoy an electric fireplace. No bill impact worth worrying about.
2. Apartment with electric baseboards
- Fireplace on low/cycling at ~750 W average, 5 h/night = ~563 kWh = ~$96.
- That same heat from the living room’s baseboard would also have cost ~$96 (both are 100% resistance), so the fireplace adds nothing extra per BTU.
- Baseboards in the other rooms set back 5°F for those 5 hours on a ~$1,200 heating season: about 5 × 5/8 × 1% ≈ 3%, or up to ~$35–$40 a season saved.
- Verdict: modest real savings, plus comfort. A ~$200 unit pays back in roughly 5+ years from bills alone — buy it mainly because you want it.
3. House with a gas furnace
- Fireplace on high with thermostat cycling (~1,000 W average), 4 h/night = ~600 kWh = ~$102.
- Best case, every fireplace BTU replaces furnace heat. That same heat from gas would have cost about $32 — so you’re paying ~$70 more for it.
- Main thermostat set back 5°F for those 4 hours on a ~$900 gas season: about 5 × 4/8 × 1% ≈ 2.5%, ~$22 saved.
- Net: roughly $45–$50 more per season than just running the furnace.
- To break even you’d need a setback worth ~$70 — around 7–8°F for 8 hours every day. Verdict: a comfort purchase; use flame-only most nights and heat only on the coldest evenings.
4. House with a heat pump
- Fireplace cycling at ~750 W average, 3 h/night = ~338 kWh = ~$57.
- The same heat from a heat pump (COP ~2.5) would have cost about $23.
- Setback 4°F for 3 hours on a ~$1,000 season: about 1.5%, ~$15 saved.
- Net: roughly $20 more per season. And deep setbacks on heat pumps can trigger expensive strip heat on recovery — see heat pump aux heat settings.
- Verdict: roughly a wash at best; worthwhile only if you want the look or have one chronically cold room.
Will 1,500 W heat your room? Rough sizing
1,500 W is the limit for a standard 120 V plug-in heater, so bigger “heats 1,000 sq ft” claims mean the same 5,100 BTU/h. Rough supplemental-heat guide (not a Manual J calculation):
| Room condition | Rough room size a 1,500 W unit can help | Notes |
|---|---|---|
| Well-sealed, modern windows, mild climate | up to ~400 sq ft | Thermostat will cycle often — lower real cost |
| Average older home | ~250–300 sq ft | Expect high setting most of the evening |
| Drafty, single-pane, exterior walls, cold climate | ~150 sq ft or less | Seal first — heat leaks out as fast as it’s made |
| Open floor plan or high ceilings | hard to say | Heat drifts away; feels weaker; consider a smaller closed room |
If the unit runs on high all evening and the room still feels cold, the problem is usually drafts, not the fireplace. Start with weatherstripping & draft stoppers, window insulation kits, thermal curtains, or cellular shades.
Time-of-use (TOU) rates
If your utility charges more in the evening (often 4–9 pm), the fireplace’s prime hours are the expensive ones:
- At a $0.40 peak rate, a 1,500 W hour costs ~60¢; at a $0.12 off-peak rate, ~18¢.
- Pre-warm the room on high just before peak starts, then drop to low or flame-only and close the door.
- Lean on a heated throw or electric blanket (often 50–150 W) during peak instead of 1,500 W of room heat.
Circuits, outlets, and why the breaker trips
- A 1,500 W heater draws about 12.5 A at 120 V. A typical 15 A bedroom or living-room circuit has little headroom left.
- Add a vacuum, hair dryer, or second heater on the same circuit and the breaker trips — that’s the breaker doing its job.
- Never solve it with an extension cord or power strip. Move the unit to an outlet on a different circuit, or run it on low.
- A warm, discolored, or loose outlet is a stop sign: unplug and have an electrician check it.
One-week measurement test
- Plug the fireplace into a Kill A Watt meter (directly into the wall — the P4400 is rated 15 A).
- Put a cheap digital thermometer in the fireplace room and one in a set-back room so you know the setback actually happened.
- Use it normally for 7 days. Read total kWh.
- Multiply by your rate. ×21 ≈ a 150-day season.
- Compare your gas or electric usage on the utility app for the same week vs a comparable-weather week without the fireplace.
Hardwired or 240 V units won’t fit a plug meter — use a whole-home monitor like Emporia or Sense, or estimate from the nameplate.
Free ways to cut the cost
- Use flame-only whenever you don’t need the heat.
- Use low (750 W) and the built-in thermostat instead of high continuously; set it to the temperature you actually want, not max.
- Use the timer/auto-off so it doesn’t run after you leave the room.
- Close the room’s door and keep the heat where you are.
- Seal the room first — every watt goes further in a tight room.
- Sit close — infrared models heat people in front of them more than the far corners.
- Don’t double-heat: if the furnace is already holding the room at 70°F, the fireplace’s heater is just extra cost.
Troubleshooting
| Symptom | Likely cause | What to do |
|---|---|---|
| Bill jumped after buying it | Main thermostat not set back; running high for hours | Meter it for a week; set back central heat; use low or flame-only |
| Blows cool air | Room reached the unit’s set temperature, or heat is off | Normal thermostat cycling; raise set point only if you’re actually cold |
| Breaker trips | Shared 15 A circuit with other big loads | Move to another circuit; run on low; never use a power strip |
| Burning or dusty smell | Dust burning off coils on first uses of the season | Usually fades in a few uses; if it persists or smells electrical, unplug and contact the maker |
| Room never warms | Drafts, high ceilings, or room too large for 5,100 BTU/h | Seal drafts, close the door, or use it in a smaller room |
| Won’t come back on after a power blip | Electronic controls reset to off | Normal for many units; this is also why external plug-in timers or thermostats often don’t work |
| Plug or outlet feels hot | Loose or worn receptacle, undersized cord | Stop using that outlet; have an electrician inspect it |
Fireplace vs other ways to stay warm in one room
If the goal is you being warm rather than the whole room looking cozy, smaller heaters close to your body often win on cost. Illustrative per-hour costs at $0.17/kWh:
| Option | Typical draw | Per hour | 4 h/night, 150 nights | Best for |
|---|---|---|---|---|
| Electric fireplace, heat high | 1,500 W | ~$0.26 | ~$153 | Ambience + heating a closed room |
| Electric fireplace, flame-only | ~25 W | ~$0.004 | ~$2.55 | Ambience only |
| Oil-filled radiator on low/cycling | ~600–900 W avg | ~$0.10–$0.15 | ~$61–$92 | Quiet, steady bedroom or office heat |
| Under-desk heater | ~100–400 W | ~$0.02–$0.07 | ~$10–$41 | Home office, feet and legs |
| Heated throw / electric blanket | ~50–150 W | ~$0.01–$0.03 | ~$5–$15 | Couch evenings, TV time |
| Heated mattress pad | ~50–100 W while warming | ~$0.01–$0.02 | ~$5–$10 | Letting the whole house cool overnight |
A popular combo: flame-only fireplace for the look + a heated throw for warmth — the room feels cozy for well under $20 a season, and you can set the central thermostat back further.
Which one should you buy?
- Just want ambience? Any model with a true flame-only mode. Check that flame-only works with heater fully off.
- Want real supplemental heat in one room? A 1,500 W unit with a built-in thermostat that shows degrees (not just “high/low”), low/high settings, timer, tip-over or overheat protection, and a UL/ETL/CSA listing.
- Have an unused wood fireplace? A log-set or insert sits in the firebox — but close the damper or block the chimney draft first, or warm air goes up the flue. See fireplace & chimney draft blockers.
- Want a built-in look? Recessed/wall-mount units — same efficiency, more install cost; confirm the outlet location or whether an electrician is needed.
- Already have a heat pump or efficient gas furnace and won’t set it back? Skip the heater purchase; a cheaper oil-filled heater, under-desk heater, or heated throw may be better zone heat per dollar.
- Want a heater with an external plug-in thermostat? Choose a heater with mechanical knobs instead — see plug-in thermostats for space heaters. Most electric fireplaces have electronic controls that don’t restart on their own.
Features worth paying for
- Digital thermostat with a degree setting — the single biggest real-world cost control.
- Independent flame-only mode and adjustable brightness.
- Timer / auto-off (1–9 hours is common).
- Low (750 W) setting.
- Overheat and tip-over protection, and a recognized safety listing.
- Remote or app — nice, not a money-saver by itself.
Our picks
We re-checked these listings on Amazon on October 13, 2026; specs and prices change, so confirm details on the product page.
Measure first
- P3 Kill A Watt P4400 plug-in electricity usage monitor (measure your fireplace’s real weekly kWh) Check price on Amazon
- TempPro TP49 digital indoor thermometer/hygrometer, 2-pack (confirm the fireplace room vs a set-back room) Check price on Amazon
Freestanding (plug-in, movable)
- duraflame 3D Infrared Quartz Electric Fireplace Stove Heater (stove style; heat or flame-only) Check price on Amazon
Insert for an existing firebox
- PuraFlame Western Electric Fireplace Insert, 750/1500W with remote (close the chimney damper first) Check price on Amazon
Recessed / wall-mounted (built-in look)
- R.W.FLAME 50” Recessed / Wall-Mounted Electric Fireplace with timer and remote (thin linear look) Check price on Amazon
- Touchstone Forte 40” Recessed Smart Electric Fireplace, 1,500 W with thermostat (built-in with app control) Check price on Amazon
Amazon links may earn us a commission as an Amazon Associate at no extra cost to you (disclosure).
Safety rules
- Don’t use extension cords, power strips, or ordinary smart plugs — plug the heater straight into the wall.
- Keep the manufacturer’s clearances from curtains, bedding, and furniture; don’t block the vents.
- Don’t leave it heating unattended or while sleeping unless the manual explicitly allows it.
- Don’t mount a TV directly above a heat vent without checking both manuals.
- Keep kids and pets away from the heat outlet; glass fronts on some units get warm.
- Don’t trust “cuts your bill 50%” claims — savings come from setting back your main heat, not from the box.
What this won’t fix
- Our numbers are illustrative. Thermostat cycling, room size, and drafts change real draw.
- Fuel price comparisons move with your local gas, propane, and electric rates.
- The setback rule of thumb is approximate; homes with radiant floors, heat pumps, or poor thermostat placement behave differently.
- Flame-only wattage varies by model; measure yours.
Quick checklist
- Find your real $/kWh (and peak rate, if you’re on TOU)
- Decide: ambience (flame-only) or real zone heat?
- Compare per-BTU cost vs your main heat with the table above
- If heating, commit to a whole-house setback on a schedule
- Plug directly into the wall on an uncrowded circuit; meter for one week
- Seal the room’s drafts first and close the door
Bottom line
Flame-only is nearly free; heat mode is a 1,500 W space heater at about 26¢ an hour at $0.17/kWh. It clearly saves money in electric-resistance homes, can come close with propane or oil, and is usually a comfort cost with a gas furnace or heat pump unless you set the rest of the house back hard. Price it honestly, measure for a week, then go after the bigger heating moves on Start Here. Amazon links may earn a commission as an Associate (disclosure).
Some links on this page go to Amazon, and we earn a commission if you buy, at no extra cost to you. Prices and savings vary by home and utility rate. More in our disclosure.
