Running Costs
How Much Does a Heat Pump Cost to Run?
A practical guide to heat pump running costs, SCOP, tariffs, examples, and the home factors that change the answer.
Read guideHome Energy Calculators
HeatWise Home
Heat pump and home energy calculators for the UK, Ireland, and Europe. Compare running costs, rough sizing, insulation payback, appliance electricity use, grants, and country assumptions before you speak to installers.
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Start with a calculator
Pick the question closest to your decision today. Each calculator uses editable assumptions and shows its limitations clearly.
Heat Pump Cost Calculator
Compare current heating bills against estimated heat pump running cost, savings, payback, and CO2 reduction.
Open pageHeat Pump Sizing Calculator
Sense-check heat loss and likely heat pump size before requesting a professional survey.
Open pageHome Energy Cost Calculator
Build a simple picture of monthly electricity, heating, hot water, and annual energy cost.
Open pageInsulation ROI Calculator
Estimate net upgrade cost, annual savings, simple payback, and 10-year value for fabric improvements.
Open pageAppliance Running Cost Calculator
Turn wattage and usage time into daily, monthly, and annual appliance electricity costs.
Open pageHeat Pump Grants Guide
Understand how grant assumptions affect upfront cost and why rules must be checked before applying.
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UK guides
English-first planning pages for UK heat pump costs, grants, boiler comparisons, older homes, and insulation savings.
UK Heat Pump Cost Calculator
Estimate running costs, payback, and grant-adjusted installation cost using editable UK assumptions.
Explore this guideUK Heat Pump Grants
Check grant planning, eligibility cautions, and official source links before relying on support.
Explore this guideHeat Pump vs Gas Boiler UK
Compare useful heat, SCOP, gas prices, electricity prices, and boiler efficiency.
Explore this guideIreland heat pump guides
Ireland-focused heat pump calculators, grants guidance, oil boiler comparisons, attic insulation savings, and older home planning.
Ireland Heat Pump Cost Calculator
Estimate running cost, savings, payback, and grant-adjusted installation cost using Ireland-focused assumptions.
Explore this guideHeat Pump Grants in Ireland
Understand grant planning, eligibility checks, and why current official rules matter.
Explore this guideHeat Pump vs Oil Boiler in Ireland
Compare oil heating and heat pump running costs using realistic fuel and electricity assumptions.
Explore this guideEurope guides
Europe-wide comparisons for country assumptions, grants, electricity versus gas prices, running costs, and high-income regions where home energy upgrades may be more feasible.
Heat Pump Costs by Country
Compare cost factors carefully without relying on invented exact country averages.
Explore this guideHeat Pump Grants by Country
Use official source links and country notes before assuming grant support.
Explore this guideWealthy Region Opportunities
Careful targeting notes for high-income regions where major home upgrades may be more fundable.
Explore this guideCountry guides
Country pages include editable assumptions, official source links, last-reviewed dates, and confidence levels. Unverified price values are left blank and labelled clearly.
Latest guides
Detailed articles on running costs, sizing, grants, insulation, radiators, and planning mistakes.
Older Homes
Is a Heat Pump Worth It for an Older House?
Older homes can work with heat pumps, but heat loss, emitters, airtightness, and expectations matter more than age alone.
Read guideComparisons
Heat Pump vs Gas Boiler Running Costs
Compare heat pump and gas boiler running costs using useful heat, SCOP, boiler efficiency, tariffs, and examples.
Read guideComparisons
Heat Pump vs Oil Boiler Running Costs
Oil-heated homes often have a stronger heat pump case, but price volatility, insulation, and flow temperature still matter.
Read guideSizing
What Size Heat Pump Do I Need?
Sizing should start with heat loss, not guesswork. Learn the numbers that shape a sensible heat pump size.
Read guideInsulation
Best Insulation Upgrades Before Installing a Heat Pump
The best pre-heat-pump upgrades reduce heat loss, improve comfort, and may lower the required system size.
Read guideCalculators on this site are estimates only. Always get a professional heat loss survey and verify current grant rules, tariffs, and product suitability before making purchase decisions.
Trust and transparency
Calculators on HeatWise Home are estimates only. We do not guarantee savings, grant eligibility, or installation suitability. Energy prices, fuel costs, grant rules, and equipment performance can change, and heat pump projects should be backed by a professional heat loss survey.
Frequently asked questions
HeatWise Home is for homeowners researching heat pump costs, grants, insulation upgrades, appliance electricity use, and ways to lower energy bills.
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Occasional homeowner-friendly notes on heating costs, grants, insulation, and practical ways to lower bills.
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Send a homeowner question, correction, partnership note, or request for help comparing energy upgrades.
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