Can You Use a Gas Fireplace During a Power Outage? Here’s What Depends on Your Ignition System

Gas fireplace during power outage, Digi Mart USA News: Power outages can be especially disruptive in colder months, cutting off lights and appliances and sometimes stopping the home’s heating system. A gas fireplace, which runs on natural gas or propane, may serve as a heating alternative until power returns, but not every model can start without electricity.

Whether a gas fireplace will light during an outage depends on its ignition system. Older units with a standing pilot, sometimes called a millivolt system, do not need electricity to ignite, so they can generally be used during a blackout.

Many newer fireplaces use an intermittent pilot ignition (IPI) system that relies on an electric spark and will not light without power.

Some IPI systems include a battery-powered backup module, which can allow the fireplace to ignite during an outage. The source advises owners to check the owner’s manual for the battery type or, if the manual is unavailable, to locate the battery compartment, which may be under the fireplace, behind the control panel, or in a separate wall-mounted control box.

Homeowners should keep a spare set of the correct batteries on hand.

Battery backups are intended only for emergencies. Leaving batteries installed long term can cause them to drain, and heat from the fireplace may cause leakage.

Old and new batteries should not be mixed, as this can reduce performance.

Some gas fireplaces are power-vented, using an electric fan to move combustion gases outdoors. Even if such a unit can be lit during an outage, its blower fan and power venting will not run, and it may produce less heat.

The owner’s manual should be checked to confirm whether a power-vented fireplace can safely run without the fan. Direct-vent fireplaces and inserts installed in an existing chimney can generally vent safely without one.

Safety precautions apply during any outage. A gas fireplace should never be left running unattended, and curtains, blankets, furniture and other flammable items should be kept away from it.

The source also recommends having the fireplace serviced at least once a year so it is ready if a power outage occurs.