This beginner guide explains the main benefits of upgrading your home's energy efficiency. These include comfort, control over bills, your EPC rating and lower carbon. We describe each benefit in plain terms. We do not quote savings, because results depend on your home and your energy use.
Independent guide. We are not a lender or a government body. Always check current scheme rules with the official provider.
Comfort and control
Insulation and draught-proofing keep heat inside your home for longer. Rooms stay at a steadier temperature, with fewer cold spots and draughts. Better glazing reduces heat loss through windows. A heat pump with good controls lets you set steady, even heating.
Solar panels and batteries give you more control over where your electricity comes from. You can use your own power and rely less on the grid.
Bills and your EPC rating
An efficient home needs less energy to stay warm. That gives you more control over your energy bills. The size of any change depends on your home, your tariff and how you use energy. An installer survey gives a fuller picture.
Upgrades can improve your home's EPC rating. Landlords need to meet minimum EPC rules for rented homes. A better rating also gives buyers and tenants clear information about running the home.
Lower carbon and next steps
Using less energy, or cleaner energy, lowers your home's carbon emissions. A heat pump replaces fossil fuel heating. Solar panels generate renewable electricity on site. Follow these steps to plan your upgrade.
- Find your home's current EPC rating.
- List the upgrades your EPC report recommends.
- Check which grants and loans fund those upgrades.
- Get two or three written quotes from MCS-certified installers.
- Plan insulation before heating upgrades where it makes sense.
Checklist
- Current EPC rating found
- Recommended upgrades listed
- Funding routes checked
- Written quotes compared
- Upgrade order planned
Frequently asked questions
How much will I save on my bills?
We do not quote savings. Results depend on your home, tariff and energy use. An installer survey gives a fuller picture.
Will an upgrade improve my EPC rating?
Many upgrades can improve your rating. Your EPC report lists the measures that apply to your home.
Which upgrade should I do first?
Insulation and draught-proofing often come first, because they reduce the heat your home needs.
I am a landlord. Why does my EPC rating matter?
Rented homes must meet minimum EPC rules. Check current rules on GOV.UK.
Is there funding for efficiency upgrades?
Yes. Warm Homes: Local Grant funds insulation and glazing for eligible low-income homes in England.
So you can see what an upgrade offers your home and plan the right first step.
WHLS Editorial Team
Our editorial team writes independent, plain-English guides on home energy finance. We review guides when scheme rules change.
References
- GOV.UK – Notice of approved grant categories and values for the Boiler Upgrade Scheme (opens in a new tab)
- Energy Saving Trust – Boiler Upgrade Scheme (opens in a new tab)
- MoneySavingExpert – Warm Homes Loan Scheme news (October 2026) (opens in a new tab)
- Financial Conduct Authority – Financial Services Register (opens in a new tab)
- MCS – Find an installer (opens in a new tab)
