Last month, the Government announced new tariffs and rules for the Domestic Renewable Heat Incentive which came into force on 20th September 2017. These changes present a great opportunity for installers to expand their sales of air source and ground source heat pumps and biomass boilers.

In the case of air source heat pumps, the available tariff for most properties will rise by 33% to 10.18 p/kWh.

However, the government have also introduced some restrictions with a requirement for heat demand caps and, in due course, requirements for metering. The former will have a particular impact upon performance calculations for mid-sized domestic properties.


This is particularly complex for the calculations concerning heat pumps and biomass boilers. As a result, HIES risk managers have considered the best way to implement these regulatory changes for members.

We have decided to support members by making it a requirement of demonstrating compliance with our Code of Practice that all members selling air source or ground source heat pumps or biomass boilers submit their energy performance calculations for installations to be independently validated by a third party certification such as The Energy Performance Validation Scheme (EPVS), www.epvs.co.uk, or an equivalent scheme.

The independent validation process will ensure that consumers have full confidence in the performance characteristics of the installation.

If you have any questions please contact HIES on 0344 324 5242 or email info@hiesscheme.org.uk.