Gas Fireplace Running Cost Calculator
Hourly and monthly cost to run a gas fireplace.
Enter your values
ⓘ Live results
Results
- Cost per hour
- $0.39
- Therms used per hour
- 0.3
- Estimated monthly cost
- $35.1
Quick answer
Gas fireplace running cost is the BTU input rate converted to therms per hour, multiplied by your gas price.
therms/hr = BTU per hour / 100,000; cost/hr = therms/hr x price per therm
How to use the Gas Fireplace Running Cost Calculator
- 1Check the BTU input rating on the fireplace nameplate.
- 2Enter your gas price per therm from a recent utility bill.
- 3Multiply by expected daily hours of use to estimate monthly running cost.
Worked example
Using the values the calculator loads with:
Inputs
- Fireplace BTU input30000 BTU/hr
- Gas price1.30 $/therm
- Hours per day3 hr
Results
- Cost per hour$0.39
- Therms used per hour0.3
- Estimated monthly cost$35.1
Frequently asked questions
Is a gas fireplace cheaper than electric heat?
Often yes per BTU delivered, but efficiency and standby pilot losses vary by unit.
Does a pilot light add cost?
Yes, a standing pilot can add a small but steady cost even when the fireplace is off — check for an intermittent ignition model to save more.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.