Heat Pump – Nailsea

The Project.

This home in Nailsea was built around 30 years ago, a typical build with filled cavity, no floor insulation, double glazing throughout and insulation in the loft. The homeowner wanted to make the switch from a gas boiler to an air source heat pump to go with their solar PV installation.

With a good standard of heating system installed in the house the idea was to make minimal changes to the heating system, albeit a few radiator changes, in order to keep the install cost down and minimise the disruption in the house.

The Solution.

Our design for the heating system came up with a 7kW Vaillant Arotherm Plus, based on the room by room heat loss calculation for the home. As the existing system used a combi boiler the customer required a cylinder, this was to be installed in a storage cupboard where the existing boiler was installed.

The proposed system required several upgraded radiators in order to achieve the desired room temperatures in the house, we incorporated a buffer vessel in the design to maintain the minimum water volume in the system, with the heating system separated into 2 zones, ground floor and first floor.

Value.

The project value for the customer was £11,000 before the Boiler Upgrade Scheme was deducted, this means the customer paid £3,500 for their heating system to be upgraded, with estimated running cost savings of £250.00 per year on a standard electricity tariff and £500.00 per year by using a smart tariff such as OVOs heat pump tariff.