Authors: University of Salford: David Farmer, Grant Henshaw, Ben Roberts, Professor Richard Fitton, Professor Will Swan Heating Consultant: Richard Burrows – Mid Wales Plumbing & Heating Supplies Limited
This report summarises the impact of reducing the flow temperature of a gas condensing boiler under controlled conditions at the Salford Energy House.
The impact of reducing the flow temperature of a domestic gas condensing boiler was measured at whole-house level under controlled conditions at the University of Salford Energy House test facility.
The study found that:
- Lowering the boiler flow temperature reduced space heating gas use e.g. lowering from 80 degrees to 60 degrees saved 12% of gas used to heat the house
- However, it also slowed heat-up rates and lowered internal air temperatures e.g. when lowering from 80 degrees to 60 degrees, heat up times in the morning went from 23 minutes to 37 minutes.
- The reductions in gas use measured are primarily due to increased boiler efficiencies rather than reductions in internal air temperature.
Money Saving Boiler Challenge
Our campaign aims to help over one million households change their combi boiler settings to save energy.
