H&A Mechanical Services is proud to have completed the installation of hybrid heating systems as part of an innovative low carbon pilot programme delivered in partnership with Phoenix Energy and the Northern Ireland Housing Executive (NIHE).
The initiative forms part of the Housing Executive’s wider Low Carbon Programme and has seen 15 homes across Belfast upgraded with a range of energy efficiency improvements designed to reduce carbon emissions, improve comfort and help shape the future of sustainable home heating in Northern Ireland.
Taking a ‘fabric first’ approach, participating properties received upgrades including cavity wall and loft insulation, as well as new windows and doors to improve the overall thermal performance of each home. Alongside these improvements, H&A Mechanical Services installed hybrid heating systems that combine an air source heat pump with a high-efficiency gas boiler, providing an effective, flexible solution that balances low carbon technology with reliable home heating.
The programme will now enter a two-year monitoring phase, during which Phoenix Energy will assess the performance of the systems across participating homes. The monitoring will evaluate carbon savings, energy efficiency, running costs and customer experience, generating valuable data to help inform future low carbon heating policy and the wider transition to net zero.
As a trusted mechanical services contractor, H&A Mechanical Services was responsible for delivering the installation of the hybrid systems to the highest standards, ensuring minimal disruption for residents while supporting the successful delivery of this pioneering project.
John McLean, Maintenance Manager at H&A Mechanical Services, said:
“We are proud to support the installation of these hybrid systems, delivering upgrades that improve the efficiency and comfort of homes. This project demonstrates how practical, well-installed solutions can play an important role in reducing emissions while continuing to provide reliable heating for households. We are delighted to work alongside Phoenix Energy and the Northern Ireland Housing Executive on an initiative that will help shape the future of low carbon heating across Northern Ireland.”
The project highlights the importance of collaboration between housing providers, utility companies and specialist contractors in delivering practical solutions that support decarbonisation while improving the lives of local communities.
By combining proven technologies with high-quality installation and long-term performance monitoring, the programme will provide valuable insight into how hybrid heating systems can contribute to achieving Northern Ireland’s ambitious climate goals.
H&A Mechanical Services is proud to be playing its part in delivering innovative, sustainable building services that create warmer, more energy-efficient homes and support the transition to a lower carbon future.

