How much does it cost per hour to run a propane fireplace?
It comes down to three things: the unit's BTU rating, how high you run it, and your delivered propane price. Physics sets the fuel use — propane holds about 91,500 BTU per gallon, so a 30,000-BTU fireplace on high burns roughly a third of a gallon an hour, less as it modulates down. Multiply your gallons-per-hour by your rate.
Do the math with your own rate
Take the fireplace's BTU-per-hour rating — a Kozy Heat Springfield 36 is 30,000 BTU on propane, for example — divide by about 91,500 to get gallons per hour on high, then multiply by whatever your supplier charges per gallon. We won't hand you a single dollar figure, because propane prices swing with the season — higher in a cold snap, lower in summer — and that number would be wrong the week you read it. But the calculation is honest and it's yours to run.
Why it costs less than you'd fear
A gas fireplace is a supplemental zone heater — you warm the room you're actually sitting in instead of the whole house. Turn the central heat down, run the fireplace where you live in the evenings, and it usually costs less than heating empty rooms. Modulating and thermostat-controlled units — which most of ours are — throttle the flame back once the room's warm, so you're rarely burning wide-open for hours.
Getting the right unit matters
An oversized fireplace in a small room wastes propane and gets shut off because it's too hot; a right-sized, efficient direct-vent unit sips fuel and actually heats. We size for your space and your fuel, and we'd rather get you the right appliance than the most expensive one. Free in-home assessment. Call (828) 545-0525.
Related questions
- How much natural gas does a gas fireplace use, and what does it cost per hour?
- How much gas does a standing pilot light use per month?
- How long will a 500-gallon propane tank last if I use my fireplace regularly?
- Does running my gas fireplace on thermostat mode burn less fuel than leaving it on high?
- Why does propane cost more in winter, and can I lock in a price?
- How do I know if my house has natural gas or propane?
Still deciding? Talk to a real installer.
Free assessments across Western North Carolina — no pressure, straight answers.