Terms of Use

HeatWise Home provides calculators and articles for general information. By using the site, you agree to use the information as a starting point for research rather than as professional design, financial, legal, or installation advice.

Calculator estimates

Calculator outputs depend on the assumptions entered by the user and on default values that may become outdated as energy prices, grant rules, and product performance change. Results are not guarantees of savings, payback, carbon reduction, or eligibility.

Professional checks

Before buying a heat pump, insulation package, or other major energy upgrade, you should obtain professional surveys, written quotes, and current eligibility advice. Heat pumps in particular should be sized using a room-by-room heat loss survey.

Third-party links and offers

The site may link to third-party websites, advertisers, affiliate partners, or referral partners. We are not responsible for third-party pricing, service quality, availability, or claims.