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Plumbing Company london | How Long Does it Take to Install an Air Source Heat Pump?

Aug 25

The installation process for an air source heat pump typically takes between 2-7 days, depending on the complexity of the project. This time frame includes the inspection of your property, preparation, and installation of both indoor and outdoor units, as well as the connection of the various system components.

To ensure a water-safe and efficient installation process, as well as long-lasting operation of the heat pump, it is crucial to have our heating engineer plan the work.


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ground source heat pump


Are there different types of air-source heat pumps?

There are different types of air-source heat pumps available, including air-to-water, air-to-air, hybrid systems and ground-source heat pumps. Air-to-water heat pumps are used for heating water, while air-to-air heat pumps are utilized for heating and cooling air.
Hybrid air source heat pumps, on the other hand, combine a boiler and a heat pump to provide hot water or a quick heat boost during very cold weather periods. Each type of air source heat pump has its benefits and applications, so it’s essential to choose the one that best suits your needs.


combi boiler installation with hot water cylinder


Air source heat pump for underfloor heating

Air source heat pumps are an excellent match for underfloor heating systems due to their low-temperature operation and large surface area, making them a suitable heat distribution for new underfloor heating systems. Underfloor heating systems distribute heat evenly throughout the floor, providing a comfortable and energy-efficient heating solution.

When paired with a gas boiler and an air source heat pump, underfloor heating can help you save on gas bills while reducing your carbon footprint.


hot water cylinder with heat pump


Heat pumps for water heating

Heat pumps can provide hot water at temperatures between 50-55°C, making them suitable for water heating purposes. To utilize a heat pump for water heating, you may need to install a new hot water cylinder, as the coil of an existing domestic hot water cylinder might be too small for optimal performance.

By using a heat pump for water heating, you can enjoy energy-efficient hot water while reducing your carbon footprint and utilizing heat energy.


External unit heat pump


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Efficiency and Performance

Air source heat pumps are known for their high efficiency and performance, providing 3-4 kWh of thermal energy for every 1 kWh of electricity used. This efficiency may vary depending on factors such as temperature, size, and model of the pump, but generally makes air source heat pumps an excellent choice for those seeking to reduce their energy consumption and want to go to a greener home heating supply.
By investing in an air-source heat pump, you’re choosing a heating solution that is both environmentally friendly and cost-effective.


Pre-Installation Work: On-site Survey and Preparation

Before the air source heat pump installation, an on-site survey and preparation work is necessary to ensure the property is suitable for the installation of a typical system. This includes verifying the existing electrical and plumbing systems, as well as the size of the property and the location of the outdoor unit. It is essential to ensure that your heating system’s pipe size is in good condition and the correct size which is a minimum of 15mm.

Proper preparation helps ensure a smooth and efficient installation process, setting the stage for the successful operation of your air source heat pump system.

Important: What is an EPC?

Before reaching out to our heat pump installer, it’s essential to understand what an Energy Performance Certificate (EPC) is, especially if you’re considering applying for a grant. EPCs provide information about how energy efficient your property is and are rated on a scale from A (very efficient) to G (inefficient). They can also give you an idea of your property's expected heating costs and emissions.

To obtain an EPC, you need to arrange for an assessment by an accredited assessor. Once you have your EPC, you can call MML Plumbing to receive a quote for a new and efficient heating system. If you recently bought a property, there’s a chance that a valid EPC is already in place, and you can confirm this through the government portal.

The outdoor unit

The outdoor unit of an air source heat pump should be placed in a location with good airflow and secured to a flat concrete base or attached to an external wall. Proper placement and securing of the outdoor unit are crucial for the efficient operation of the heat pump system.

The outdoor unit, acting as a heat exchanger, is responsible for absorbing heat from the outside air, which is then transferred to the indoor unit to provide heating and hot water for your home.

The indoor unit

The indoor unit of an air source heat pump is typically a hot water cylinder or buffer tank, which should be installed according to the manufacturer’s recommendations and the specific needs of your property. This unit is responsible for receiving the heat absorbed by the outdoor unit and transferring it to your home’s heating and hot water supply.

Proper installation of the indoor unit is crucial for the efficient operation and performance of the air source heat pump system.


An underfloor heating system with an air source heat pump


Post-Installation Work – Finishing and Maintenance

After the installation of your air source heat pump, our installer will complete any necessary finishing touches and discuss maintenance requirements with you to ensure the efficient operation of the system, including the proper use of heat pump controls. Regular maintenance for air source heat pumps involves cleaning the external unit and registers, de-icing in winter, and employing a professional engineer once per year to replace filters, wipe down coils and fan blades, and refill antifreeze.

By properly maintaining your heat pump, you can ensure its longevity and efficient performance for years to come.


our plumber in a call out


Noise Level During Operation

– Air source heat pumps produce some noise during operation, primarily from the outdoor unit’s fan and compressor.

– Modern air source heat pumps are designed to operate quietly, and their noise levels are generally comparable to other outdoor HVAC equipment like air conditioners.

– The noise can vary depending on the brand, model, and installation location, but it is generally not disruptive to homeowners or their neighbours.


When it comes to creating a comfortable and energy-efficient living environment, a reliable heat pump installation is paramount. At Efficient Comfort, we take pride in offering professional heat pump installation services that ensure optimal heating for your home or business. Say goodbye to fluctuating temperatures and high energy bills – trust Efficient Comfort for a hassle-free and cost-effective heat pump installation that will keep you comfortable all year round.


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