Check that the contractor is currently registered with SEAI for the heat pump grant and ask for their registration details, relevant experience and recent references. A proper assessment should consider heat loss, insulation, radiators or underfloor heating, hot-water requirements, electrical capacity and suitable controls rather than relying on a quick estimate. Request an itemised written quotation covering design, installation, commissioning, certification, warranties and any work not included, and confirm who will handle the required grant paperwork and BER-related steps. Apply through the official SEAI process before work begins where required, and confirm the final grant and eligibility with SEAI, as these depend on your home and installation.