You will usually need details such as your home’s location, age, floor area, existing heating system and the type of heat pump you are considering. The calculator can provide an indicative grant estimate, but it does not confirm eligibility or the final payment. A registered SEAI heat pump contractor normally needs to complete a technical assessment, including checking whether the home’s heat-loss performance is suitable. Your home’s age, BER, proposed system and other circumstances may affect the outcome, so check the latest requirements on the official SEAI website before applying.