Heat Pump vs Gas Furnace Calculator

Enter your ZIP code to auto-fill state-average rates, or use your own utility bills for a precise estimate.

1 Location

ZIP Code

2 January Utility Bill

Your most recent January (peak heating) bill. State averages are pre-filled from your ZIP — replace with actual bill values for a better estimate.

Billing Period Start

Billing Period End

Gas Usage

Unit

Gas Usage Charges ($) Volumetric charges only — exclude fixed monthly service fees

Electricity Usage (kWh)

Electric Usage Charges ($) Volumetric charges only — exclude fixed monthly service fees

3 May Utility Bill

Your most recent May (baseline, minimal heating) bill. State averages pre-filled.

Billing Period Start

Billing Period End

Gas Usage

Unit

Gas Usage Charges ($) Volumetric charges only — exclude fixed monthly service fees

Electricity Usage (kWh)

Electric Usage Charges ($) Volumetric charges only — exclude fixed monthly service fees

4 Settings

Furnace Type

Standard (80% AFUE) High-Efficiency Condensing (95% AFUE)

Advanced Electricity Billing

Energy Rate Structure

Flat Rate Tiered / Inclining Block Time-of-Use (TOU)

My utility charges demand fees ($/kW)

I have solar with net metering

Fetching 5 years of weather data...

Gas Only

Heat Pump Only

Hybrid

Monthly Heating Cost Comparison (5-Year Average)

Gas Only Heat Pump Only Hybrid

What Would It Cost to Switch?

Adjust to match your home. Cost ranges are rough national averages — get local quotes for real numbers.

Current cooling system

AC / furnace age

Electrical panel

Ductwork

Heat Pump vs Gas Furnace Calculator

1 Location

2 January Utility Bill

3 May Utility Bill

4 Settings

Monthly Heating Cost Comparison (5-Year Average)

Derived Values

Heat Pump Details

Assumptions & Notes