HVAC Energy Cost Calculator
Estimate heating or cooling electricity cost from equipment watts and runtime.
This page is an editable estimator with realistic defaults so you can model your own situation in minutes.
HVAC cost = equipment watts / 1,000 x runtime hours x electricity rate.
Treat the result as a planning estimate and verify important numbers with the relevant official source before acting.
| Power | 3,500 W | |
|---|---|---|
| Runtime | 6 hours/day | |
| Load factor | 1 |
Assumptions
- Heating, cooling, and water heating estimates vary with climate, setpoints, insulation, equipment condition, and usage.
- HVAC equipment sizing should be confirmed with a qualified contractor and proper load calculations.
- Efficiency ratings and real-world performance can differ by temperature and operating conditions.
How this calculator works
Formula used
HVAC cost = equipment watts / 1,000 x runtime hours x electricity rate.
Example calculation
Plug in your own numbers and the result updates instantly. HVAC cost = equipment watts / 1,000 x runtime hours x electricity rate.
HVAC Energy Cost Calculator FAQ
Is this hvac energy cost calculator exact?
No. It is an estimate for planning only. Actual bills, savings, and sizing depend on utility tariffs, weather, usage behavior, equipment efficiency, installation quality, local code, and product specifications.
What electricity rate should I enter?
Use your all-in average rate if possible: supply, delivery, taxes, and riders divided by total kWh. Time-of-use plans, demand charges, fixed fees, and tiered rates can change the result.
Should I verify before buying equipment?
Yes. Confirm solar, battery, generator, HVAC, water heater, insulation, window, and electrical decisions with qualified installers, electricians, utility programs, and local permitting requirements.