Air Source Heat Pump Electrical Install, Shropshire

The Project

This job in Shropshire involved handling the electrical side of a new Daikin air source heat pump installation. As part of our wider domestic electrical services, the work covered everything from the dedicated heat pump circuit through to isolation switches, consumer unit work, and the electrical supply for the system’s wet fan convector heater.

Heat pump installations bring together several elements that all need to work together correctly, the outdoor unit itself, the electrical supply feeding it, the controls inside the property, and often related components like immersion heaters and fan convectors that support the wider heating system. Getting each of these right, and labelled clearly, was the focus of the job.

Dedicated Circuits and Isolation Switches

The heat pump and immersion heater were each given their own dedicated circuit, isolated with clearly labelled GARO isolator switches fitted outside near the unit. Labelling matters here, a heat pump system involves more than one circuit working together, and clear labelling means anyone servicing the system in future, whether that’s us or another engineer, can identify exactly what they’re isolating before starting work.

Heat pump and immersion heater isolators, clearly labelled

Immersion heater isolation switch

Consumer unit, updated with the new circuits

Cable Routing and Outdoor Connections

Running the electrical supply out to the heat pump unit meant careful routing alongside the refrigerant pipework, keeping everything protected and tidy against the brickwork rather than left exposed. This kind of coordination between the electrical and mechanical sides of a heat pump install is a key part of getting the whole system right, not just wiring the unit itself.

Electrical cabling routed alongside refrigerant pipework to the outdoor unit

Controls and Monitoring

Inside, the Daikin control panel gives a clear view of the system, hot water temperature, heating zones, and system pressure all in one place. Getting the electrical supply and connections right behind the scenes is what allows a control panel like this to actually work reliably day to day.

The Daikin control panel, showing live system status

Powering the Heat Pump’s Fan Convector Heater

As part of the same heating system, the property also has a wet fan convector heater, fed with hot water from the heat pump rather than heating electrically on its own. Because it has a fan built in to actively blow warm air into the room, rather than relying on natural convection like a standard radiator, it needs its own small electrical supply to run the motor, which is where we came in.

We installed a dedicated switch and transformer for the fan convector, correctly labelled and isolated, so the unit can be safely worked on independently of the rest of the heat pump system in future.

Fan convector transformer and fused switch

The fan convector unit, installed and connected

The Result

The property now has a fully wired, clearly labelled electrical setup supporting the new air source heat pump, including the fan convector heater it feeds. Every circuit is isolated, identified, and tested, giving a system that’s straightforward to maintain going forward.

If you’re planning a heat pump installation and need the electrical side handled properly, our team covers domestic electrical work across Cheshire and into neighbouring counties including Shropshire.