An SEAI registered heat pump installer is a contractor approved by the Sustainable Energy Authority of Ireland to carry out eligible heat pump work under its grant schemes. They can assess your home, check whether the heating system is suitable, and complete the required installation and paperwork. Using a registered installer may be necessary for an SEAI grant, but approval and the grant outcome depend on your individual property and the scheme rules. Check the current SEAI registered contractor list and discuss your options with the installer before work begins.