When should a heat pump be serviced during the year?
Many people ask when during the year it is best to service a heat pump. Some assume it must be done in spring or right before winter. In practice, season is less important than regularity. A heat pump can be serviced in winter, spring, summer, or autumn. What matters most is that service is performed at consistent intervals.
In short
- A heat pump should normally be serviced every 2 years
- Service can be performed all year
- Many people book service only when cold weather arrives
- It is often easier and better to service when temperatures are milder
- Regular service timing matters more than season.
Regular service is the most important thing
A heat pump often runs for many thousands of hours each year. Over time, dust, pollen, and dirt accumulate inside the system.
Deposits can build up in, among other parts:
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heat exchanger
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fan wheel
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filters
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drainage system
When the unit gets dirty, heating performance can drop and electricity use can increase. That is why regular service is important.
Compare it to car servicing
Heat pump service can be compared to car service: the key point is regular intervals, not a specific season.
As long as service is done regularly, the heat pump usually performs better and lasts longer.
Many people book service when cold weather arrives
In practice, many requests come only after cold weather has already started.
This can lead to longer wait times, reduced heat output before service, and less practical timing if the unit is your main heat source.
It can therefore be an advantage to complete service earlier, when outdoor temperatures are milder.
Benefits of servicing when it is not very cold
Shorter wait time: service technicians often have lower demand outside the coldest periods.
Better preparation for winter: the heat pump is cleaned and checked before peak heating demand.
How often should a heat pump be serviced?
For most air-to-air heat pumps, service is recommended approximately every second year.
In some homes, more frequent service may be needed, for example if:
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the heat pump is used very heavily
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the home has frequent wood burning
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there are pets in the home
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there is a lot of dust or pollen
Regular service can improve heating output and provide more stable operation.
What is done during heat pump service?
Professional heat pump service includes more than filter cleaning.
Typical service for an air-to-air heat pump includes:
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cleaning the indoor-unit heat exchanger
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cleaning the fan wheel
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checking airflow and temperature
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checking drainage
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checking the outdoor unit
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checking electrical components
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checking refrigerant circuit and possible gas leakage
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functional testing of the heat pump
This helps ensure the unit operates correctly and that potential problems are discovered early.
Regular service gives better operation
A clean heat pump provides better heat transfer and more efficient operation. That means more delivered heat with lower electricity use.
At the same time, service reduces the risk of faults and can extend system lifespan. At Servion, we normally recommend service every second year for air-to-air heat pumps.
The exact season is less important. Regular maintenance is what matters most.