Heat Loss Calculations for Air Source Heat Pumps
To ensure that any heating system works efficiently and effectively, it should be sized correctly to both the property and the individual rooms, this is particularly true for Air Source Heat Pumps. The property must have full room by room heat loss calculations carried out to BS EN12831 to ensure the heat pump is correctly sized to meet 99.6% of the heat load at the design conditions (outdoor average temperature for the location, indoor temperature required and amount of heating time required), this ensures your home stays warm and comfortable.
From Spring 2022 the Government's Boiler Upgrade Scheme will mean households are eligible for a grant of £5000 towards the installation of an ASHP so if your old boiler needs replacing, now is the time to make the move to more energy efficient, low carbon option. To qualify for the grant there are a few stipulations which must be met such as using an MCS accredited installer; a set of heat loss calculations is also a requirement in order to be eligible for the grant.
How much does it cost?
£200
What does the assessment involve?
Your assessor will need to gather information about the buildings heat loss, this will be done by taking many measurements and determining the construction of all building elements including external and internal walls, floors, roofs and windows. Access to the loft will be required to measure insulation and a small hole may need to be drilled in the external wall to determine the type of insulation, if there is any. The hole will be back filled with an appropriate sealant. A noise assessment is a necessary part of the survey in order to ensure the installation meets planning requirements so your assessor will try to identify a suitable position for the ASHP, this will be done with your input.
What will I receive?
Your report will include all of the construction information for your property including the u-values used to size the ASHP. The report will make recommendations for the size of heat pump, the size of hot water cylinder and the size of the radiators needed to make the system as efficient as possible.
