ganak.appHeat Pump Cost Calculator
Estimate heat pump running costs and compare gas, oil, propane, and electric heating. See annual savings, payback, and carbon reduction.
~1,800 full-load hrs/yr
Estimate your annual heat pump heating cost
$184.6 per month
2,215.26 per year
Cost Breakdown
Detailed metrics for your heat pump estimate
What Is a Heat Pump Cost Calculator?
Estimate running cost, compare heating systems, and calculate payback
A Heat Pump Cost Calculator estimates the annual cost to run a heat pump and compares it against gas, oil, propane, and electric resistance heating. It calculates electricity consumption from your home size, climate band, and efficiency rating, then shows side-by-side costs and carbon emissions. Enter a contractor quote to get full payback projections — including net investment, annual savings, and 5/10/15-year net returns. Supports air-source, ductless mini-split, and ground-source (geothermal) systems with HSPF2, SCOP, or COP efficiency ratings.
Planning estimates only. Results use planning assumptions for heating load and runtime. They do not replace a professional Manual J load calculation, energy audit, or contractor quote. Actual costs depend on your specific home, equipment, weather, and energy rates.
3
heat pump types
Air-Source · Ductless · Geothermal
7
heating systems
Gas · Oil · Propane · Electric · Heat Pumps
CO₂
carbon tracking
Market grid factors or custom kg/kWh
Used by: Homeowners evaluating heat pump vs. furnace costs, contractors providing payback estimates, and energy auditors comparing heating system options. The calculator uses HSPF2, SCOP, or COP efficiency ratings, models backup heat as a user-adjustable share, and calculates payback against your existing heating system using a contractor quote.
How to Calculate Heat Pump Running Costs
A five-step process from home size and climate to payback
Set Your Home & Climate
Enter your home size and select the climate band closest to your location. The calculator estimates your heating load from area × climate factor. Override with a known load if you have audit data.
Choose Your Heat Pump
Select air-source (ducted), ductless mini-split, or ground-source (geothermal). Set the efficiency rating — HSPF2, SCOP, or COP depending on your market. Higher efficiency reduces annual electricity consumption.
Enter Energy Prices
Input your electricity rate. If using backup heat, select the backup type — gas, oil, propane, or electric resistance — and set the efficiency and fuel price. Adjust the backup share slider to model hybrid systems.
Compare Against Other Systems
Switch to Compare mode to see side-by-side annual costs against gas, oil, propane, or electric resistance. Edit each system's efficiency and energy price for accurate local comparisons.
Calculate Payback (Quote Required)
Switch to ROI mode, enable a contractor quote, and enter your existing heating system's type, efficiency, and fuel price. The calculator shows annual savings, net investment after rebates, and payback period.
Core Formulas
Heating Load = Home Size × Climate Factor
Electricity = (Load × Hours × hpFraction) ÷ Efficiency ÷ 1,000
Annual Cost = kWh × Electricity Rate + Backup Fuel Cost
Payback = Net Investment ÷ Annual Savings
HSPF2 uses Btu/Wh. COP and SCOP use annual demand ÷ (COP × 3,412). Backup share reduces the fraction the heat pump handles. Carbon = kWh × grid factor (kg CO₂/kWh or lb/kWh).
Worked Example: 2,000 sq ft · Mixed Climate Band · HSPF2 8.5
- Load = 2,000 × 34.9 = 69,740 BTU/hr (~5.8 tons)
- kWh = (69,740 × 1,800) ÷ 8.5 ÷ 1,000 = 14,768 kWh
- Cost = 14,768 × $0.15 = $2,215/yr ($185/mo)
Climate Bands — At a Glance
How your climate band affects heating demand and annual runtime
Climate bands are planning estimates for equivalent full-load heating hours per year — the hours your system would need to run at full capacity. These are not official building-code values. Select the band closest to your location for the most realistic estimate.
Hot / Tropical
100–800 hrs/yr
Low load factor
Mild / Temperate
800–1,800 hrs/yr
Moderate load factor
Cold / Continental
1,800–3,000 hrs/yr
High load factor
Very Cold / Subarctic
3,000–4,000 hrs/yr
Very high load factor
Cold climate tip
Modern cold-climate heat pumps (HSPF2 ≥ 10 or COP ≥ 4) maintain strong efficiency even in cold bands. Use the backup share slider to model hybrid setups — electric strips or dual-fuel — for the coldest hours.
Methodology & Sources
How the calculations work and where the reference data comes from
Heating Load
Area × Climate Factor
Per-band planning estimate
Electricity
Demand ÷ Efficiency
HSPF2 · SCOP · COP
Carbon
kWh × Grid Factor
Market-default or custom
- Air-source HSPF2 guidance — DOE FEMP
- Geothermal COP guidance — DOE FEMP
- U.S. grid emissions factor — EIA
- Incentives and rebates — ENERGY STAR · DSIRE
Common Mistakes When Estimating Heat Pump Costs
Avoid these errors to get more accurate estimates
Ignoring your climate band
Running costs vary dramatically by climate. A heat pump in a hot band costs a fraction of one in a cold band. Always select the band closest to your location.
Using old HSPF instead of HSPF2
HSPF2 (2023+) is 10–15% lower than legacy HSPF. Enter your unit's HSPF2 rating, not the old HSPF value. Use SCOP for markets outside the U.S.
Skipping backup in cold climates
In colder bands, plan for backup heating during the coldest hours. Use the backup share slider to model electric strips or dual-fuel gas/oil backup.
Forgetting avoided replacement cost
If your existing furnace needed replacement anyway, subtract that avoided cost from your net investment for a more realistic payback timeline.
Limitations
What this calculator does and does not cover
Heating-only — cooling costs and annual HVAC totals are not calculated.
Climate bands are planning assumptions — override with a known heating load for greater precision.
Carbon uses market-default grid factors where available. Your local grid mix may differ.
Installation cost requires a contractor quote for payback calculations.
Does not model temperature-dependent efficiency — performance is treated as constant.
Enter your own rebate total — incentives vary by region and change frequently.
Frequently Asked Questions
Common questions about heat pump installation, running costs, and payback
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Last updated Jul 11, 2026