There are two types of heat pumps: air-source and ground-source. Air-source heat pumps are less expensive to install but are less efficient in very cold weather.
Ground-source heat pumps (also called geothermal heat pumps) are more expensive to install but can be more than twice as efficient as air-source heat pumps in very cold weather.
What Is A Heat Pump System?
Air source
An air-source heat pump is the most popular to be installed out of the two. It uses the air around the building to both heat and cools the home.
The system will have a compressor, an outdoor coil, and an indoor coil.
The compressor works by pressurizing Freon gas. As this happens, the gas turns into a liquid and is pushed through the Outdoor Coil. The Outdoor Coil works to transfer the heat from the air to the Freon liquid.
Once the Freon has been heated, it goes into the Indoor Coil where a blower forces air over the coil. This warms up the air before it enters your home through ductwork.
The entire process is then reversed in order to provide cooling in the summer months.
Ground source
A ground-source heat pump also called a geothermal heat pump uses the ground to provide heating and cooling for your home.
The system has a water loop that is buried underground and a heat pump unit inside your home.
The water loop works by circulating water through the underground pipes.
As the water circulates, it picks up heat from the ground and brings it back to the heat pump unit. The heat pump unit then transfers the heat to the air inside your home.
In the summer months, the process is reversed in order to cool your home.
Related: The Top Problems With Ground Source Heat Pumps
Heat Pumps Life Expectancy
Air source heat pumps can last up to 20 years with proper maintenance while ground source heat pumps last much longer with an average lifespan of 25-30 years.
When your heat pump reaches the end of its useful life, you’ll probably notice a significant drop in performance.
The compressor may fail, leading to higher energy bills and reduced heating and cooling capacity.
Parts may also start to rust, which can lead to leaks. If you notice any of these problems, it’s time to start thinking about replacing your heat pump.
What is the average life expectancy of a heat pump
The average life of a heat pump is approximately 15 years. This length of time may be increased with proper maintenance.
How often should a heat pump be serviced?
Most manufacturers recommend that a heat pump be serviced at least once a year. However, depending on the climate and usage, some systems may need to be serviced more frequently.
Servicing your heat pump regularly will help to ensure that it runs smoothly and efficiently for many years.
Which part of a heat pump wears out first?
The compressor is normally the first part of a heat pump to wear out. The compressor is a critical component of the system and its failure can lead to reduced heating and cooling capacity as well as increased energy bills.
If you notice any drop in performance, it’s important to have your heat pump serviced by a qualified technician.
How long do heat pump compressors last?
On average, heat pump compressors last around 12 to 15 years. However, this can vary depending on the make and model of the heat pump as well as the climate in which it is used.
Related: How Long Should A Heat Pump Run Per Day? (SURPRISING!)
How long do heat pump capacitors last?
Heat pump capacitors tend to last as long as the heat pump itself. However, they can fail prematurely if they are not properly maintained.
Regular servicing of your heat pump will help to ensure that the capacitor lasts for the full lifespan of the heat pump.
How long do heat pump coils last?
Heat pump coils typically last as long as the heat pump itself. However, they can fail prematurely if they are not properly maintained. Regular servicing of your heat pump will help to ensure that the coils last for the full lifespan of the heat pump.
Tips For Maintaining Your Heat Pump
In order to prolong the life of your heat pump, it’s important to keep up with regular maintenance.
Some tips for maintaining your heat pump include:
- Servicing your heat pump at least once a year
- Check the ducts, filters, blower, and indoor coil for dirt and other obstructions.
- Check for and repair duct leakage.
- Confirm that your heat pump is receiving enough ventilation.
- Correct refrigerant charge.
- Check for refrigerant leaks and replace any lost refrigerant.
Replacing Your Heat Pump
When your heat pump reaches the end of its lifespan, you’ll probably notice a significant drop in performance.
The compressor may fail, leading to higher energy bills and reduced heating and cooling capacity.
The heat pump may also start to rust, resulting in leaks. If you detect any of these issues, it’s time to think about upgrading your heat pump.
While heat pumps typically last around 15 years, their lifespan can be extended with proper maintenance.
Servicing your heat pump at least once a year will help to ensure that it runs smoothly and efficiently for many years to come.
If you do need to replace your heat pump, be sure to consult with a qualified technician to find the best model for your home.
How Much Do Heat Pumps Cost To Replace?
Air source
Depending on the type and brand, an air source heat pump will cost between £5,000 and £10,000 to replace.
Related: How Much Does A Heat Pump Cost To Install And Run?
Ground source (Geothermal)
A geothermal heat pump will cost between £15,000 and £25,000 to replace.
Don't forget, replacement costs will be much less since the boreholes have already been drilled, so you won't need to pay for that again.
The cost of replacing your heat pump will depend on the type and brand of the heat pump as well as the company you use for installation.
Be sure to get multiple quotes from qualified technicians to ensure you are getting the best deal.
FAQs
Are grants available to replace an existing heat pump?
You may be eligible for the Boiler Upgrade Scheme (BUS) which offers up to £5,000 grant towards the cost of replacing your boiler. You can find out more information on the BUS website.
What are the benefits of replacing an old heat pump?
Replacing an old heat pump can lead to significant energy savings as well as increased comfort in your home. Newer models are much more efficient than older models, so you'll see lower energy bills and reduced carbon emissions.
Do I need planning permission to replace my heat pump?
You will not need planning permission to replace your heat pump as long as it is the same type and size as the existing unit. However, if you are planning on installing a new type or size of heat pump, you may need planning permission from your local authority.
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