Installers and metering

As an installer you need to know when a system must be metered, how metering for payment works, and what metering documents you have to complete and give to your customer for their application.

Most people joining the Domestic Renewable Heat Incentive (RHI) won't need to install meters and submit meter readings to receive payments. Below, we’ve highlighted the situations which do require metering but for full details make sure you read our Essential Guide to Metering.

Where systems need to be metered

1. If you have back-up heating

This applies where:

The renewable heating system is installed alongside a fossil fuel space heating system - for example, where there’s a biomass boiler and a back-up oil boiler.

The renewable technology is a heat pump with an integrated fossil fuel system, like a gas boiler, built into it.

There’s more than one renewable heating technology for space heating, for example, where there are two biomass boilers. See Multiple productsopen key term pop-up  for more information.

Back-up heating that doesn’t count: The system doesn’t need metering if the back-up heating is only designed to heat a single room, such as an open fire or plug-in electric heater. Similarly, immersion heaters and supplementary electric heaters, that some heat pumps and biomass systems have, don’t count. Heat recovery systems that recycle air but don’t generate additional heat also don’t need to be metered.

2. Where there’s a biomass heating system that isn’t designed to heat the whole property

Biomass systems must meet all of the space heating requirements for the property. Anything less will need to be metered.

3. Where the property is occupied for less than half the year

Homes that have been lived in for less than half the year must be metered. This includes second homes or tenanted properties, which have been empty for six months in the last year. The applicant needs to declare on the application form if their home is occupied for less than 183 days a year. This rule doesn’t apply if the applicant is applying as an eligible new-build.

Next steps

To find out more, see:

Multiple products

There are some circumstances when you may be able to install multiple products and apply for these in one application. We explain these here. More.

Publications and updates

  • Published: 18th Jul 2014
  • Guidance
  • 1 Associated documents
This document is for people with an air source heat pump or ground source heat pump that must be metered for them to receive scheme payments.

  • Published: 9th Apr 2014
  • Guidance
  • 1 Associated documents
This document is for people with a biomass heating system that must be metered for payment. It must be completed by the installer and given to the customer to send to us if their heating system needs an alternative to standard metering arrangements.

  • Published: 9th Apr 2014
  • Guidance
  • 1 Associated documents
This document is for people with an air source heat pump or ground source heat pump that must be metered for payment. It must be completed by the installer and given to the customer to send to us if their heating system needs an alternative to standard...

  • Published: 9th Apr 2014
  • Guidance
  • 1 Associated documents
This document is for people with a biomass heating system that must be metered for them to receive scheme payments. It must be completed by the installer and given to the customer who’ll use it to answer the questions about metering on the Domestic...