Heat Pump Not Heating
The heat pump is running but not producing enough heat to warm the house or hot water.
What Is Causing This?
- 1Refrigerant level low due to a leak
- 2Compressor fault reducing heating capacity
- 3System settings incorrect for the weather conditions
How Urgent Is This?
This needs prompt attention. Delaying could cause further damage, safety risks, or significantly higher repair costs.
What Needs to Be Done
A heat pump engineer will check refrigerant levels, compressor operation, and system settings. They will repair any leaks, recharge the system, and optimise the controls.
How Much Will It Cost?
National average estimate
Labour: £2,033 – £5,083 | Materials: £4,000 – £10,017
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Prices are estimates based on typical UK rates. Actual costs depend on the specific issue, accessibility, and your location. All quotes from tradespeople on Tradesfolk are completely free.
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Ask a QuestionHow to Prevent This
Have the heat pump serviced annually. Keep the outdoor unit clear of debris and vegetation. Ensure flow temperatures are set correctly for the season.
Related Problems
Rooms not getting up to the temperature set on the thermostat, even after the heat pump runs for a long time.
The heat pump never seems to switch off, running 24 hours a day and driving up electricity bills.
The heat pump controller or display showing an error or fault code, and the system stopping or reducing output.
Other Heat Pump Installer Problems
The heat pump outdoor unit producing excessive vibration, buzzing, rattling, or humming.
Heavy ice or frost forming on the outdoor heat pump unit, particularly on the coils, that does not defrost.
The heat pump controller or display showing an error or fault code, and the system stopping or reducing output.
Rooms not getting up to the temperature set on the thermostat, even after the heat pump runs for a long time.