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Air source heat pumps

Up to 80% of the energy use within a building is for heating and hot water. Air source heat pumps are a renewable, low carbon alternative to high carbon heating systems. Using renewable heating technology, they deliver efficient heating and hot water all year round.

 

Benefits of air source heat pumps

Energy Efficient

Air source heat pumps offer significant cost savings when compared to a tradition fossil fuel boiler or direct electrics heater. This makes it easier to meet Part L Energy Efficiency building regulations for new builds. Even greater savings can be made when combining an air source heat pump with solar PV or solar thermal.

They also offer large reductions in carbon emissions due to reduced consumption of fossil fuels, and are zero a carbon option if used with a 100% renewable electricity tariff.

 

Single heating system

An air source heat pump can provide all the heating and hot water you need without the requirement for additional systems, even during the coldest winter months.

 

Comfort

Air source heat pumps offer longer heating periods for less money and automatically maintain more consistent room temperatures than the traditional intermittent heating from a boiler.

 

Safety

Air source heat pumps do not burn fossil fuels, eliminating the risk of carbon monoxide poisoning and improving air quality. 

 

Longevity

Air source heat pumps have an expected operating life of 15 years, with serviceable parts extending this further. High-quality systems have additional anti-corrosion to protect the external heat pump unit.

 

Grant funding – Renewable Heat Incentive

Air source heat pumps qualify for both the new Green Homes Grant and the Domestic Renewable Heat Incentive. 

You will be able to claim your Green Homes Grant voucher from late September 2020 and receive the balance of Domestic RHI tariff payments for 7 years.

 

Tax savings

You can make tax savings (reduced rate: 5% VAT) with your air source heat pump and all associated goods for domestic installations (0% for domestic new build properties). There are also enhanced capital allowances for commercial purchases.

How do air source heat pumps work?

Air source technology

Air source heat pumps work by sitting outside your home and extracting heat from the outdoor air. Air source technology upgrades this renewable heat energy and transfers it inside the home to provide hot water and heating for radiators and / or underfloor heating.

 

External air source heat pump unit

The unit is ideally positioned on an external wall to minimise pipework length and heat loss.

High quality air source heat pumps have very low noise levels providing more options for location.

A monobloc system is the most common design. The heat pump produces the higher temperature heating in the external unit and is transferred via hot water pipework inside the building. These systems are typically the most efficient and simpler to maintain.

A split system is similar to an air conditioning unit, where the external fan unit is connected to an internal unit via a refrigerant. These systems require higher level maintenance due to the larger volumes of refrigerant, but do reduce heat losses so that the unit can be positioned further away from the building.

 

System design

System design is critical. Performance and efficiency are affected by the change in air temperature across the year. 

The heat pump has to be able to efficiently meet the heating and hot water demand of the building at the lowest external air temperatures in winter.

 

George Clarke introduces the Mitsubishi Ecodan air source heat pump

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