Energy efficiency hub
All the information you need in one place to help make your home more energy efficient.
Looking to make your home more energy efficient?
Cutting how much energy your home uses can lower your bills, make your home more comfortable, and reduce your carbon footprint.
Whether that means topping up your loft insulation, switching to an air source heat pump, or fitting smart lighting, we've got everything you need to plan the right upgrade for your home.
From understanding your EPC rating, to checking what grants and funding you might be eligible for.
The stages of an energy efficiency project
No two energy efficiency projects are the same, but most follow a similar process:
Take a look at the different guides we have:
Cost guides
![Icynene insulation cost: [year] UK price guide](https://images.ctfassets.net/5kq8dse7hipf/iGiWwdzFOh4i5TL96aVOr/410e1993b9b7639cc914cb417991da8d/icynene-insulation-cost.jpg)
Icynene insulation cost: 2026 UK price guide
Using an icynene spray foam insulation system can save up to 50% on energy bills when compared to tr...
![Smart lighting cost: [year] UK price guide](https://images.ctfassets.net/5kq8dse7hipf/1eAktwjZxNib5bwTBtyv3h/28e4846894a3915074842e78d0a3002d/Feature-Smart-lighting-cost.jpg)
Smart lighting cost: 2026 UK price guide
See UK smart lighting prices for bulbs, hubs and dimmers, and find a checked electrician to fit your...
![Storage heater running costs in [year]](https://images.ctfassets.net/5kq8dse7hipf/63dvykFcZdMJeIlw3GZ85D/62bdc36e7b445f86e7c4c1371c6e8c43/cost-of-running-storage-heaters.jpg)
Storage heater running costs in 2026
If you use electric central heating, you could save a fortune on your bills by investing in a night...
- ...
Expert advice
Gas boiler ban: What will replace gas boilers?
You've probably seen conflicting headlines about gas boiler bans. The rules have now settled, so her...
Common cavity wall insulation problems and how to fix them
Suspect you've got a problem with your cavity wall insulation? Discover common issues, warning signs...
What are the benefits of loft insulation?
Insulating your loft is one of the most cost-effective home improvements available, and the benefits...
- ...
Ideas & inspiration
We asked AI to help us save energy in our home… here's what it suggested
Energy prices and AI technology are two of the hottest topics right now. With sky-high energy bills...
How to guides
How to insulate a shed
A cold, damp shed is wasted space for most of the year. This step-by-step guide covers everything yo...
How to insulate a garage
Discover how to properly insulate a garage through this guide.
How to insulate roof rafters with Celotex
When it comes to insulating homes with pitched roofs, Celotex has become one of the most popular cho...
Looking to find out more about energy efficiency?
Content for you
Planning your home insulation
Upgrade your home insulation with our complete guide to this popular eco-home improvement project.
Planning for an air source heat pump
Find out all you need to know when planning for an air source heat pump in your home.
Seven tips for central heating maintenance
Central heating maintenance helps keep your home warm and safe and maximises the lifespan of your ce...
Questions for your installer
Whether you're insulating your home, fitting a heat pump, or making another energy efficiency upgrade, these questions can help you choose the right installer:
Qualifications and Certification
Are you MCS certified (for renewable technology like heat pumps or solar)?
Are you registered with TrustMark or RECC?
Have you completed similar installations before, and can you show examples?
Project Specifics
Will my home need any extra work first, such as better insulation or rewiring?
How will this affect my existing heating system, radiators or pipework?
Will there be any noise, disruption or downtime during installation?
How long will the installation take?
Costs, Grants and Contracts
Is this a fixed quote or an estimate?
Am I eligible for any grants or schemes, such as ECO4 or the Boiler Upgrade Scheme?
What's included in the price, and what might cost extra?
What ongoing running or maintenance costs should I expect?
Guarantees
What warranty or guarantee comes with the installation?
Will I need annual servicing, and is that included?
How do I raise an issue if something goes wrong after installation?