Are the calculators suitable for final purchase decisions?

No. They are planning tools only. Heat pump purchases should always be backed by a professional heat loss survey and installer assessment.

How does the site make money?

The site is structured for display ads, affiliate links, and lead generation, with transparent disclosures for users.

Smarter Home Energy Decisions

Heat pump and home energy calculators built for real homeowner questions

Estimate running costs, compare heating options, pressure-test insulation ROI, and turn confusing upgrade choices into a clearer plan.

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HeatWise Home may earn from ads, affiliate links, or referral partners. That can support the site at no extra cost to you.

Heat Pump Cost Calculator

Compare current heating bills against estimated heat pump running cost and payback.

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Heat Pump Sizing Calculator

Get a rough idea of heat loss range and potential heat pump size before requesting quotes.

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Home Energy Cost Calculator

Estimate monthly electricity, heating, and annual energy spend using editable assumptions.

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Insulation ROI Calculator

Compare upgrade cost, savings, grants, and simple payback for common fabric improvements.

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Appliance Running Cost Calculator

See what everyday appliances cost to run and where simple usage tweaks might help.

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Heat Pump Grants Guide

Understand the role of grants, what to check, and how incentives affect the numbers.

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Heat Pump vs Gas Boiler

Compare likely running costs, comfort profile, and emissions tradeoffs.

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Heat Pump vs Oil Boiler

Useful for off-grid homes comparing annual costs and upgrade value.

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Best Home Upgrades for Lower Bills

Start with the measures that often make future heating upgrades work better.

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Fresh blog starters

Built for long-tail search topics around costs, sizing, insulation, and homeowner mistakes.

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Running Costs

How Much Does a Heat Pump Cost to Run?

A practical look at heat pump electricity use, tariffs, and the home factors that shape running costs.

Older Homes

Is a Heat Pump Worth It for an Older House?

Older homes can work well with heat pumps, but the path usually starts with fabric upgrades and honest design assumptions.

Comparisons

Heat Pump vs Gas Boiler Running Costs

Compare fuel prices, system efficiencies, and why headline savings figures can mislead homeowners.

Comparisons

Heat Pump vs Oil Boiler Running Costs

Oil-heated homes often have a stronger savings case, but storage, tariffs, and insulation still matter.

Sizing

What Size Heat Pump Do I Need?

Sizing should start with heat loss, not guesswork. Here is how to think about the numbers.

Insulation

Best Insulation Upgrades Before Installing a Heat Pump

The cheapest heat is the heat you do not need to buy. Start with the upgrades that reduce load sensibly.

Calculators 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.

Frequently asked questions

The site is designed for homeowners researching heating costs, energy savings, insulation upgrades, grants, and practical next steps.

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