Which? Energy
Make your home more energy efficient
From simple draughtproofing to new heating systems, our expert guidance can help you reduce your bills and your carbon footprint.
Start with easy wins
If you’re not ready to make big changes you can still improve your energy efficiency with quick and easy jobs. Pick up materials cheaply in hardware shops or online – all you need is a little DIY know-how.
Insulate your home
Good insulation can really improve your home's energy efficiency. Whether you run a gas boiler, heat pump or other heating system, you can instantly save money and energy by making sure the heat you generate stays inside.
Opt for sustainable energy
Explore a range of options for using your own renewable energy. Find out what will work best for your home, whether it’s a heat pump or solar panels or a combination of systems working together.
Get the right energy deal
Find the right tariff for you and choose with confidence
Compare energy tariffsExplore financial support
The most efficient home energy improvements also tend to involve the most expensive initial outlay. Grants are available, and in some cases the return on your initial investment can be promising.
Pick energy efficient appliances
The appliances and other home products you use regularly can drive up your energy bills. Check how much a replacement will cost you to run over time as well as its upfront costs, and look for our Eco Buy recommendation on products we’ve tested.
Learn about renovation costs
Often the most cost-effective time to improve your home’s energy efficiency is when you're renovating. If you're having a new floor put in or an extension built, consider things like insulation and underfloor heating.
