Air Source Heat Pump Replacement

What air source heat pump replacement includes

Replacing a heat pump is not just swapping a box outside. It involves checking the whole system so the new unit can deliver the temperatures and efficiency you expect.

• Site survey and condition check of the existing heat pump, pipework, electrics, controls and hot water setup
• Heat loss and output checks to confirm correct sizing and suitable flow temperatures
• Advice on compatibility with radiators, underfloor heating and cylinders, plus any upgrades needed
• Safe isolation, disconnection and removal of the old unit
• Installation of the replacement heat pump and any required ancillaries (valves, filters, buffer or controls changes where needed)
• System flushing or water quality checks where appropriate
• Commissioning, performance checks and control setup for day-to-day use
• Handover guidance so you understand settings, schedules and basic user care

When this service is the right fit

Choose replacement if your heat pump has recurring faults, uses obsolete parts, or costs too much to keep running. It is also suitable when your home has changed, for example an extension, insulation upgrades, or altered hot water demand, and the existing unit is no longer a good match. Landlords and small commercial sites often replace to improve reliability and reduce call-outs.

How the replacement is delivered

Work starts with a survey to confirm outputs, pipework routes, condensate management, and control strategy. You then get a clear plan for what will be replaced, what will be reused, and what needs improving to protect performance. Installation typically includes isolating and removing the old unit, fitting the new heat pump, reconnecting services, and commissioning with checks on temperatures, pressures, flow rates and defrost behaviour.

After commissioning: efficiency, comfort and ongoing value

Once running, controls are set up to suit the building and your routine, with guidance on flow temperature and schedules to keep running costs under control. If issues appear after handover, they are usually linked to system balance, water quality, or control settings, and can be corrected through follow-up optimisation. Regular servicing helps maintain performance and spot small issues before they become breakdowns.