Furnace Blower Electricity Cost Calculator
Estimate furnace or air-handler blower electricity cost from fan watts, runtime, and circulation settings.
Calculate blower electricity cost
How this calculator works
A gas or oil furnace still needs electricity for the blower and controls. Motor type, airflow, duct pressure, filter condition, speed, and continuous-fan settings affect power.
This tool covers blower electricity only. Fuel used to create heat and electricity used by central air-conditioning equipment are separate costs.
A 500-watt blower running eight hours per day at $0.18/kWh costs about $0.72 per day.
How to get a more accurate estimate
- Use measured fan watts at the operating speed.
- Replace filters according to equipment requirements and investigate airflow problems.
- Do not assume continuous fan improves efficiency; use settings recommended for the system and comfort needs.
Frequently asked questions
Does this include natural gas?
No. It estimates blower electricity only.
Do variable-speed motors use less power?
Efficient motors can reduce power at suitable airflow, but duct pressure and settings still matter.
Why does a dirty filter matter?
Restricted airflow can affect comfort and system operation; follow manufacturer specifications for filter type and replacement.
Results use the values you enter and the formula shown above. Real bills can include taxes, minimum charges, tiers, time-of-use pricing, cycling losses, and other adjustments. Use a recent bill or a plug-in energy meter when accuracy matters.