Help your users turn down their boiler flow temperature

This toolkit contains tested principles, guidance and resources to help your users lower their combi boiler’s flow temperatures to save money and reduce their carbon emissions

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I want to build my own services and advice ›

Use these principles and tested service patterns if you are an organisation that offers advice direct to users

I want to see examples of how this has been done ›

See best practice from organisations across the energy and consumer support sector

I want a boiler optimisation tool to share with my users ›

Use Nesta’s tool on your own channels

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View the latest evidence on flow temperatures

A couple sat looking at energy bills with a boiler in the background

Why we're here

Households could be saving energy and gas by ensuring that their boilers are running as efficiently as possible. Many condensing combi boilers are generating more emissions and costing households more than they need to.

If these boilers were optimised, households could reduce their energy use, emissions and costs.

This toolkit is a resource for people giving advice in the energy and home heating sector. It contains guidance, ready-to-use materials and best practice examples of how to ensure boilers are running efficiently while maintaining comfort and mitigating vulnerabilities.

Created by Nesta

This toolkit has been created by Nesta, the UK's innovation agency for social good

Nesta’s sustainable future mission aim is to accelerate the decarbonisation of household activities in the UK and improve levels of productivity. Our goal is that, by 2030, the UK will have reduced household carbon emissions by 28% from 2019 levels, and will be on track to reach zero by 2048.

Our focus on low flow temperatures is part of our sustainable future mission’s aim to optimise current heating systems, with the goal of reducing emissions.