PHAM NEWS | NOVEMBER 2026 Heat Pumps 23


Prioritising planning and accurate sizing


As the UK heating market moves towards low-carbon technologies, electrical and renewables specialists are increasingly adding air source heat pumps (ASHPs) to their work. For Warwickshire- based KS Connexions, careful planning and accurate system sizing have been central to its approach to installation. The business has installed


Baxi systems ranging from 6kW units to larger 13kW three-phase models, using Heat Punk software to carry out detailed heat loss assessments. Director Stin Sidhu says


accurate sizing is critical to performance. “If you get the heat loss survey wrong, everything else falls apart. I’d say I’m more nervous about the heat loss calculation than the installation itself. An installation can be fixed. A badly sized heat pump causes problems forever.” Planning also covers the outdoor unit’s position, site


Cooling and heating


Air-to-air heat pumps from Mitsubishi Electric are providing year-round heating and cooling at The Northern Club, a historic sports venue in Sefton, North Liverpool, dating back to 1859. The historic building presented


access and the safe installation of hot water cylinders, including in loft spaces. The team coordinates lifting, storage and other requirements with builders or homeowners before work begins. “If everything is planned


properly, a heat pump and cylinder can be installed in a couple of days,” says Stin. “But sometimes it takes three or four days, and that’s perfectly fine. Quality matters more than speed.” Following an initial Baxi HP40


installation, KS Connexions standardised on the HP60 with pre-plumbed cylinders for subsequent projects. Stin says the


HP60’s higher flow temperatures offer flexibility across different property types, while the pre- plumbed cylinder simplifies both plumbing and electrical work. The cylinder’s compact layout


and Baxi’s commissioning app have also proved useful. The app brings checklists, system parameters and controls together, helping installers work through the commissioning process. Baxi provided on-site guidance,


wiring schematics and technical support during the early installations, helping the team develop its practical experience. ◼ phamnews.co.uk/1126/29


a significant heating challenge, with its age, limited insulation, large viewing windows and raised flooring all contributing to heat loss. The large windows also left little space for additional radiators, making both heating and cooling difficult. The club worked closely


with installer partner TDC and


Mitsubishi Electric to develop a heat pump system suited to the age and construction of the building. This involved the installation of three Mitsubishi Electric MUZ-AP71/MSZ-AP71 air-to- air heat pump systems which provide rapid heating during the winter and cooling throughout the summer. These are also Wi-Fi enabled via the MELCloud app, allowing the club to manage temperatures, operating modes and schedules remotely. The partnership has seen the


club enter a planned preventative maintenance contract with TDC, a Mitsubishi Electric Diamond Quality Partner, with the equipment also covered by a 10-year manufacturer’s warranty. ◼ phamnews.co.uk/1126/30


The future of heat pumps is here


Monobloc air source, ground source & internal air source with integral MVHR.


Quieter, more efficient, easier to install. New for 2026: 5 & 13kW 230 V, 17Kw 400 V, white units & more!


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