Independent Guidance
They will provide you with independent guidance on measures necessary to ensure that the dwelling fabric heat loss is lowered to an acceptable level for a heat pump system to perform effectively and efficiently. The required heat loss level is expressed as a Heat Loss Indicator of 2 Watts/Kelvin/m2. In some cases, where upgrades may not be cost-optimal, a value of HLI up to 2.3 Watts/Kelvin/m2 can be accepted provided additional requirements are met. Full details of these requirements can be found in the SEAI Domestic Technical Standards and Specification and should be discussed with your Technical Advisor.
