How often should a heat pump be serviced?
One of the most common questions homeowners ask is: how often should a heat pump be serviced? An air-to-air heat pump often runs for several thousand hours per year. Over time, dust, pollen, and dirt build up in filters, fan parts, and the heat exchanger. This can reduce both performance and lifespan. That is why regular service is recommended.
In short
- A heat pump should normally be serviced every 2 years
- In homes with heavy usage, annual service may be relevant
- Service improves heating performance and lowers electricity use
- A clean heat pump can deliver up to 15-20% better efficiency
- Regular service helps the heat pump deliver more heat per kWh and stay reliable over time.
Why heat pumps need service
A heat pump works by moving heat from outdoor air into your home. To do this, it pulls large amounts of air through the indoor unit.
Over a year, very large air volumes pass through the system. Along with the air come:
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dust
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pollen
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grease particles from cooking
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pet hair
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particles from wood burning
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dirt from outdoor air
Even if you clean filters yourself, dirt gradually builds up inside the unit, especially on the heat exchanger and fan wheel. These areas are difficult to clean properly without professional equipment.
What happens if a heat pump is not serviced?
Many people notice that heating performance gets worse over time without understanding why. A common reason is internal dirt buildup.
Lower heating output: dirt on the heat exchanger reduces heat transfer to the room.
Higher electricity use: the unit must work harder to deliver the same heat.
More noise: dirt on the fan wheel can cause imbalance and increased noise.
Shorter lifespan: components may wear faster when operating conditions are poor.
How often should a heat pump be serviced?
For most homes, heat pump service every second year is recommended, especially when the heat pump is used as the main heating source.
In some cases, annual service can be a good idea, for example when the home has:
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extensive wood burning
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pets
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high dust load
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continuous heat pump operation
More frequent service can improve operation and help extend system lifespan.
What is included in heat pump service?
Professional heat pump service involves more than filter cleaning. Typical service includes:
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cleaning the indoor heat exchanger
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cleaning the fan wheel
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checking temperature and airflow
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checking drainage
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checking the outdoor unit
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checking electrical connections
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checking refrigerant gas
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functional testing of the heat pump
This helps ensure that the heat pump operates as it should.
What you can do yourself
As the owner, there is also simple maintenance you should do yourself, including:
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clean filters regularly
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keep clear airflow around the outdoor unit
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remove snow, leaves, and ice
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keep air intakes open
Most manufacturers recommend cleaning filters about once per month during heavy-use periods.
Service can reduce electricity use
A clean heat pump provides better heat transfer. This means less electricity is needed to deliver the same heat.
In many cases, regular service can improve efficiency by 15-20%, especially when a long time has passed since the previous service.
This can lower electricity bills and provide more stable heating through winter.
Book heat pump service
Regular service is a simple way to ensure your heat pump delivers as much heat as possible for the electricity it uses.
At Servion, we normally recommend service every second year for air-to-air heat pumps. This provides better operation, lower electricity use, and longer system lifespan.