You normally start by checking the SEAI eligibility requirements and submitting an application with details about your household, income support and home. If your application progresses, SEAI or its appointed provider may arrange a home assessment to identify suitable energy and heating improvements. An approved contractor then discusses the recommended works and arranges installation if you accept them. Eligibility, the upgrades offered and the timescale depend on your circumstances and the assessment, so check the latest process on the official SEAI website before applying.