Written answer
Energy Conservation
Ireland launched a high-temperature heat-pump pilot to assess older, less-insulated homes, with results potentially informing accelerated rollout and grant changes.
12. Deputy Jennifer Whitmore asked the Minister for Climate, Energy and the Environment if he is aware of the work being done to introduce high temperature heat pumps in the UK; and if he will consider accelerating the roll out in Ireland. [65221/26]
Comment on this
In February, under the new National Residential Retrofit Plan 2026, a High Temperature Heat Pump (HTHP) Pilot was launched to evaluate the performance of these heat pumps in Irish homes.
A HTHP works in the same way as any other heat pump but delivers heat at a higher temperature that can be used in existing central heating systems. HTHPs can operate at temperatures similar to traditional boilers which means many homes may be able to keep their existing radiator systems, subject to advice.
The pilot is particularly interested in homes with higher heat loss that may not currently qualify for existing heat pump grants and older homes where high temperature operation could reduce the need for extensive upgrades. Data from UK Electrification of Heat Study shows that HTHPs installed in homes built up to 1980 achieved an average performance of 303%, demonstrating strong efficiency even in older homes.
The pilot aims to collect data on system performance, energy use, indoor comfort levels and heating patterns. This data will help assess the overall efficiency, running costs and performance of HTHPs for different home types. If the data demonstrates high efficiencies at higher levels of heat loss or lower levels of insulation, this will inform the operational direction of the Sustainable Energy Authority of Ireland's (SEAI) retrofit delivery programme that would facilitate an acceleration of the uptake of heat pumps in Ireland. The pilot will need to monitor heat pump performance across several months, including at least one full heating season, before the data can be used to assess potential changes in policy.
My Department and the SEAI continue to ensure that grant schemes' terms and conditions, eligibility criteria and rates are kept under review taking account of demand, research, innovation, evolving technology and other relevant factors, making appropriate changes as necessary.