An electric fireplace running cost is almost nothing on flame-only (roughly half a cent to 2 cents an hour) and about 28 cents an hour with a standard 1,500-watt heater on full, at the September 2026 US average residential rate of 18.34 cents per kWh. The bigger money decision in a media wall is usually not the power bill but the circuit feeding the fire: a new dedicated circuit typically runs $570 to $1,000 installed, and skipping it is the number one reason breakers trip the first cold evening.
The full cost breakdown
Here is what an electric fire in a media wall actually costs to run and to power correctly. Running costs are our arithmetic from manufacturer wattages at 18.34 cents/kWh; your utility rate will move them up or down.
| Line item | Typical cost |
|---|---|
| Flame effect only (about 30 to 106 W LED) | About $0.006 to $0.02 per hour |
| Heater on low or eco (about 750 W) | About $0.14 per hour |
| Heater on full, 120V model (1,500 W) | About $0.28 per hour |
| Heater on full, 240V model (2,500 W) | About $0.46 per hour |
| Heater on full, 240V model (3,000 W) | About $0.55 per hour |
| Flame only, 4 hours a night for 30 days (100 W) | About $2.20 per month |
| Full heat, 3 hours a night for 30 days (1,500 W) | About $25 per month |
| New dedicated circuit, installed | $570 to $1,000 (average around $700) |
| Permit and inspection | $10 to $500 depending on city |
| Panel upgrade, if there is no room for a breaker | $500 to $2,000 |
| Drywall and framing repair after wiring | $7 to $16 per sq ft |
The takeaway: the flames are close to free, and the one-time electrical work can easily exceed a full winter of heating.
Estimated cost: At the national average, a 1,500 W fire on full heat for three hours a night costs roughly $25 a month. In Nevada (the cheapest state at 13.11 cents/kWh) the same use is about $18; in Hawaii (52.72 cents/kWh) it is about $71.
Flame-only vs heat: where the running cost really comes from
The flame picture is LEDs and a small motor or light projector. EcoSmart publishes flame-effect draw between 30 W and 106 W depending on screen size, which is in light-bulb territory. Leaving the flames on all evening with the heat off will barely register on your bill.
The heater is different. Every watt becomes heat (1,500 W is the familiar 5,118 BTU rating), so cost is simply watts times hours times your rate:
- Multiply the heater wattage by hours used and divide by 1,000 to get kWh.
- Multiply kWh by your rate from the electric bill (look for the all-in cents per kWh, including delivery).
- Example: 1,500 W x 3 hours = 4.5 kWh; 4.5 x $0.1834 = about $0.83 a night.
Rule of thumb: Every 1,000 W of heater costs about 18 cents an hour at today's US average. Flame-only use rounds to zero.
A common misunderstanding is that switching to 240V makes the fire "more efficient" or cheaper to run. It does not. A kWh costs the same whether it arrives at 120V or 240V. A 240V fire simply has a bigger heater (the Dimplex IgniteXL, for example, is rated 1,500 W and 5,118 BTU on 120V, and 2,500 W and 8,530 BTU on 240V), so it heats more space and costs more per hour at full output. Dimplex lists that unit at roughly 500 sq ft of heating on 120V and up to 1,000 sq ft on 240V.
Why the breaker trips when the fire shares a circuit with the TV
This is the complaint that shows up again and again in homeowner forums. In one RedFlagDeals thread, a poster whose fireplace kept tripping the breaker was told the breaker was doing its job: a 1,500 W fire draws about 12.5 amps, a typical bedroom or living room circuit is 15 amps, and the heater is designed to sit right near that limit. The same thread warned that swapping in a bigger breaker is dangerous because the wire in the wall is not rated for it.
Now add the rest of the media wall. A 15 A circuit at 120V tops out at 1,800 W:
| Load on one 15 A circuit | Approximate draw |
|---|---|
| Electric fire, full heat | 1,500 W |
| 65-inch LED TV | About 88 W (OLED about 116 W) |
| AV receiver at idle | About 65 W |
| Running total before volume goes up | About 1,650 to 1,680 W |
That leaves almost no headroom. A receiver like the Onkyo TX-NR6050 lists 65 W idle but a 635 W operating rating, so a loud movie scene, a console, a subwoofer or a lamp on the same circuit can push the total past 1,800 W, and the breaker trips mid-scene.
Important: Never "fix" nuisance trips with a larger breaker on the existing wire, an extension cord, or a power strip. Those shortcuts defeat the protection that stops wiring overheating inside your wall. The fix is a correctly sized dedicated circuit installed by a licensed electrician.
For the full picture of where the rest of the gear should live and plug in, see our guide to media wall AV equipment placement.
120V plug-in vs 240V hardwired: what each one needs
Dimplex states it plainly: plug-in units connect to a standard 120V outlet and can often be installed without an electrician if a suitable outlet already exists where the unit needs it, while hardwired models running at 208 or 240V must be connected by a licensed electrician, usually on a dedicated circuit.
Even plug-in models push you toward a dedicated line. Dimplex's plug-in owner's manual says a dedicated circuit is preferred, and becomes required if the breaker trips or fuse blows regularly when the heater runs. Its built-in IgniteXL manual goes further: a dedicated, properly fused 15 A circuit is required for either voltage, and the unit is designed to be hardwired, not fitted with a cord and plugged into a receptacle.
If you are still choosing a unit, our electric fire buying guide covers sizes and flame tech; this article is about what happens once it is on the wall.
15 A or 20 A? The code nuance to raise with your electrician
- NEC 210.23 limits any single cord-and-plug appliance that is not fastened in place to 80 percent of a 15 A or 20 A circuit. On 15 A that is 12 A, and a 1,500 W heater draws 12.5 A.
- NEC 424.3(B) treats fixed electric space-heating equipment as a continuous load, so the branch circuit and breaker must be sized at 125 percent of the heating load. 12.5 A x 1.25 is about 15.6 A, which points at a 20 A circuit.
- Manufacturers such as Dimplex list a dedicated 15 A circuit. On Mike Holt's electrician forum, a thread on exactly this question split between following the listing and treating the insert as a fixed heater needing 20 A. One practical suggestion there: run 12-gauge wire so the circuit can be a 20 A circuit if the inspector wants it.
Pro tip: Your local inspector has the final say. Ask your electrician which way your jurisdiction reads it before the drywall goes up; changing wire later means opening the wall.
Budget vs mid-range vs high-end
Price range: Budget, about $0 in electrical work. A plug-in insert on an existing outlet inside the fire cavity, used mainly for flames. Works only if nothing heavy shares that circuit.
Price range: Mid-range, about $570 to $1,000 extra for a new dedicated 120V circuit plus any permit. This is the setup most installers recommend for a media wall where you will actually use the heat, and it ends breaker trips caused by the TV and AV gear.
Price range: High-end, a large 240V built-in such as a 60-inch Dimplex IgniteXL (listed around $3,400 at one authorized dealer) plus a dedicated 240V circuit, and possibly $500 to $2,000 for a panel upgrade if there is no breaker space. Running cost rises to about 46 cents an hour at 2,500 W, but so does heat output.
You can rough out the fire size and the rest of the wall in our media wall configurator to see where the cavity and outlet need to go.
Where to save (and where not to)
When to DIY: Deciding how you use the fire. If you mostly want ambience, flame-only mode costs pennies a week, and a plug-in insert on an existing, lightly loaded outlet may be all you need. Checking which breaker feeds the wall (flip it and see what goes dark) is also a free, useful first step before calling anyone.
When NOT to DIY: Adding a circuit, hardwiring the fire, or converting a unit between 120V and 240V. Dimplex manuals direct buyers to a licensed electrician for new circuits, and hardwired 208/240V models must be connected by one. This work usually needs a permit.
Pro tip: Bundle the recessed TV outlet and low-voltage pass-through into the same electrician visit. Our guide to outlet code behind a media wall explains what that outlet needs.
Where not to save: the circuit itself. Put it in the quote before framing starts, not after the first trip.
What to tell your electrician, in one list:
- Make and model of the fire, with the installation manual (voltage, wattage, amps, required circuit).
- Whether it will be plug-in or hardwired, and exactly where the outlet or junction box sits in the cavity.
- That it must be a dedicated circuit, and whether they will size it 15 A or 20 A for your inspector.
- Whether you want a wall switch (the IgniteXL manual allows a single-pole switch rated at least 15 A).
- What else is on the wall: TV, receiver, sub, consoles, LED lighting, so those stay on a separate circuit.
If you would rather have one crew handle framing, fire and wiring coordination, you can compare local installers or get matched with free quotes for a fireplace media wall.
Cost FAQ
Is it cheaper to leave the flames on without heat?
Yes, by a wide margin. Flame-only draws about 30 to 106 W, which is under 2 cents an hour at the national average. The heater is what costs money.
Does a 240V electric fireplace cost less to run?
No. Electricity costs the same per kWh at either voltage. A 240V unit usually has a larger heater, so it puts out more heat and costs more per hour on full.
Can the TV and the fire share an outlet?
Not on the heat setting if you want to avoid trips. A 1,500 W heater alone uses about 12.5 of a 15 A circuit's amps. Put the fire on its own circuit and keep the AV gear elsewhere.
Sources
- Electricity Rates by State (September 2026), ElectricChoice — US average 18.34 cents/kWh, Nevada 13.11, Hawaii 52.72
- Electric Fireplace Running Costs Guide, EcoSmart Fire — flame effect 30 to 106 W, 1,500 W at 120V and 3,000 W at 240V heaters
- Dimplex IgniteXL XLF50/74/100 Owner's Manual — dedicated 15 A circuit, hardwire-only, 15 A wall switch, eco heat mode
- Dimplex IgniteXL 74-inch listing, Amazon — 1,500/2,500 W, 5,118/8,530 BTU, 12.5/10.4 A, heating area
- Dimplex XLF60 IgniteXL, Tri State Fireplaces — 120/240V specs and listed price
- Linear Electric Fireplaces, Dimplex — plug-in vs hardwired 208/240V and electrician requirement
- Dimplex DF Series Manual — dedicated circuit preferred, required if breaker trips
- Cost to Install a Dedicated Circuit, HomeAdvisor — $570 to $1,000, permits, panel upgrade, drywall repair
- Cost to Install a Dedicated Circuit, Angi — average around $700
- Electric Fireplace in room trips breaker, RedFlagDeals Forums — homeowner breaker-trip thread, 12.5 A draw, bigger breaker warning
- Built in fireplace minimum circuit required, Mike Holt's Forum — electricians debating 15 A vs 20 A for built-in inserts
- Why Does My Electric Fireplace Keep Tripping the Breaker, Fireplace Choice — overload causes, avoid extension cords
- Don't Get Burned by the NEC's Space-Heating Equipment Rules, EC&M — NEC 424.3(B) continuous load, 125 percent sizing
- NEC 210.23 Permissible Loads, UpCodes — 80 percent limit for cord-and-plug equipment
- How Many Watts Does a TV Use, Aurora Solar — 65-inch LED about 88 W, OLED about 116 W
- Onkyo TX-NR6050 specifications — 635 W operating rating, 65 W idle