Electric vs Gas Fireplace: Converting the Last Appliance

The fireplace is frequently the last gas appliance in an otherwise electrified home, and it's the one that keeps the meter — and its fixed monthly charge — in place. Which makes converting it a financial decision about the gas account rather than about the fireplace itself.

Electric vs gas fireplace

An electric fireplace is a 1,500-watt space heater with a light show — fine for ambience and taking the chill off one room, not a heating system. A gas fireplace is genuine heat, at the cost of venting and a gas line.

Be clear about what the fireplace does

Two very different cases:

Decorative. Used occasionally, for atmosphere. Contributes negligible heat to the house. This is the majority of gas fireplaces, and it's an easy conversion.

A genuine heat source. A substantial gas insert or direct-vent unit that actually heats a room or serves as backup heat. Converting this one requires thinking about where that heat comes from instead.

Which yours is determines everything below.

Electric fireplace options

Electric inserts are designed to fit into an existing fireplace opening. Flame effects vary widely in quality, and most include a heater element for supplemental warmth.

Freestanding electric stoves sit in front of or near the old opening.

Built-in linear units are usually a renovation choice rather than a straight swap.

What they provide: appearance, a supplemental heater, no combustion, no venting, no gas line, and operation with a wall switch or remote.

What they don't: the heat output of a substantial gas unit, and any operation during a power outage.

How much heat does an electric fireplace produce?

Most electric fireplaces plug into a standard 120V outlet, which is the main practical appeal — no electrician needed.

The limit is straightforward: a 120V circuit can only supply so much, so the heat output of a plug-in electric fireplace is modest. It will take the chill off a room; it won't replace a substantial heating appliance.

Two cautions:

• Larger units may require a dedicated circuit. Check the model.
• A heater on a shared circuit trips breakers. If the outlet also serves entertainment equipment, lamps and other loads, running the heater may exceed the circuit. This is a common complaint and it's a circuit problem, not a product defect.

If you need real heat in that room, a heat pump or a properly sized mini split is the right answer rather than a decorative appliance — see what is a mini split and the mini split sizing calculator.

What happens to the gas line when you remove a fireplace?

Licensed work. A plumber or gas fitter shuts off the supply, disconnects the appliance, and properly caps the piping. Normally permitted and inspected.

Note that fireplace gas lines sometimes have a key valve in the floor or wall nearby — that also needs addressing, not just the connection at the appliance.

If this is the last gas appliance, this is also the moment to plan removing the whole distribution system rather than just capping one branch. See capping an unused gas line and how to decommission a gas line.

What do you do with the flue after removing a gas fireplace?

This is the step people skip.

A gas fireplace has a venting arrangement — a chimney, a direct-vent terminal through the wall, or a B-vent. Once the appliance is gone, that becomes an unused opening through the building envelope.

Left alone, an open flue is:

• An air leakage path, and a substantial one — a chimney is essentially a hole from your living space to the sky
• A water entry point if the cap or crown deteriorates
• A pest entry — birds, bats, squirrels and insects all use disused flues

Options: cap it, seal it at the appropriate point, or have it evaluated and closed properly. If the chimney also serves another appliance, do not seal it — that's a different and more serious situation. See what to do with an unused chimney.

And if you're removing a fireplace while a gas water heater still shares the same chimney, get the venting evaluated before assuming anything — see orphaned water heater venting.

The real argument: dropping gas service

Here's why this small appliance gets its own guide.

Gas utility bills include a fixed monthly service charge billed regardless of usage. A household that electrified heating, water heating, cooking and drying but kept a decorative fireplace is paying that charge, every month, to use one appliance a few evenings a year.

Converting the fireplace lets you:

1. Cap or remove the remaining gas piping
2. Have the utility remove the meter and close the account
3. Stop paying the fixed charge permanently

Find that charge on your gas bill and multiply by twelve. Compare against the cost of an electric insert. For most households the arithmetic is quick and one-sided.

See removing your gas meter, all-electric home explained, and electrification and your electric bill.

What do you lose switching to an electric fireplace?

Two honest losses:

Outage operation. Many gas fireplaces — particularly millivolt-controlled units — operate without electricity, which makes them a genuine emergency heat source. An electric fireplace does not. If you rely on it for that, plan the replacement resilience: see using an EV as home backup power or how to size a home generator.

Real flame. Effects have improved substantially, but they're effects. Some people mind; many don't.

The bottom line

Decide first whether your gas fireplace is decorative or a real heat source — decorative is an easy swap to a plug-in electric insert, while a genuine heat source needs a real heating plan instead. Have the gas line capped by a licensed professional, and don't leave the flue open: cap or seal it. The financial case is rarely about the fireplace's energy use and almost always about finally removing the gas meter and its fixed monthly charge.

Model costs with the electricity cost calculator, check circuit capacity with the home electrical load calculator, or read removing your gas meter.