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45 years of trusted expertiseAir Source Heat Pump Spares
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Source genuine air source heat pump spares for trade repairs. Stocking sensors, fans and valves. Enjoy free Click & Collect from over 350 UK branches.
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Maintaining the precise operational parameters of an air source heat pump requires exact replacement parts to preserve high seasonal coefficients of performance. Our dedicated range of ASHP spares encompasses everything from replacement fan motors and robust compressors to delicate printed circuit boards and temperature sensors. Sourcing manufacturer-approved components guarantees full compatibility with existing refrigeration cycles and hydronic setups, eliminating the guesswork during fault-finding and component exchange. Whether you are addressing a defrost cycle failure, a malfunctioning expansion valve, or a faulty circulation pump, these critical spares allow qualified heating engineers to complete repairs with total confidence. Utilising the correct replacement parts not only restores immediate heating and hot water provision but also ensures the unit continues to operate safely within current energy efficiency guidelines.
Frequently Asked Questions
Why is my air source heat pump frosting up excessively?
While a light coating of frost is normal during winter operation, a heavy build-up usually indicates a failure in the active defrost cycle. This can be caused by a faulty ambient temperature sensor, a failing reversing valve, or restricted airflow due to a broken fan motor. Engineers should first inspect the physical condition of the evaporator coil for debris before testing the sensors and checking the PCB for correct defrost initiation signals. Replacing defective sensors or valves promptly is vital to prevent the compressor from sustaining permanent damage and returning the unit to normal efficiency.
Do I need F-Gas certification to replace heat pump components?
The requirement for F-Gas certification depends entirely on which specific components are being replaced on the unit. If the repair involves breaking into the refrigerant circuit, such as replacing a compressor, condenser, or thermostatic expansion valve, the work must legally be carried out by a certified F-Gas engineer. However, replacing standard hydronic components, external fan motors, or electrical sensors on a monobloc system typically does not require F-Gas qualifications, provided the sealed refrigerant loop remains totally undisturbed. Always check the manufacturer guidelines and current industry regulations before undertaking any repair work.
How can I ensure I order the correct replacement PCB for a heat pump?
Heat pump printed circuit boards are highly specific to the manufacturer, exact model, and often the production year of the unit. To guarantee compatibility, you must cross-reference the serial number and product code located on the heat pump data plate before ordering a replacement control board. Installing an incorrect or older generation PCB can lead to communication errors, inefficient running, or total system lockout. If you are unsure about the exact part required, consult the original installation manual to find the precise manufacturer part number.
How quickly can I get replacement heat pump parts delivered?
We understand that a broken heat pump can leave a property entirely without heating or hot water, making rapid access to spare parts essential for installers. You can utilise our free Click & Collect service to pick up stocked items from over 350 branches nationwide in as little as five minutes. For planned maintenance or specific replacement orders, we provide free next working day delivery on standard stocked orders over £75 ex VAT.