Advice
EPC Ratings Explained
What an Energy Performance Certificate is, what your rating means, and the upgrades that improve it.
What is an EPC?
An Energy Performance Certificate (EPC) rates how energy-efficient your home is, from A (most efficient) to G (least efficient). It also estimates your energy costs and suggests improvements. Most homes that have been sold or let recently already have one.
Why your rating matters
- Lower running costs — a better rating usually means cheaper bills.
- Funding — many grants prioritise homes with lower ratings.
- Selling or letting — buyers and tenants increasingly look at EPCs.
- Comfort — an efficient home is warmer and easier to heat.
How to improve your EPC rating
The biggest gains usually come from better insulation, an efficient heating system, and generating your own energy. Double or triple glazing, a modern boiler or heat pump, and solar panels all help.
How do I find my EPC rating?
When you get a quote we look up your property’s EPC automatically. You can also search the government EPC register for your address.
How long is an EPC valid?
An EPC is valid for 10 years, though improvements you make since it was issued won’t show until it’s renewed.
What’s a good EPC rating?
C or above is considered good. Many older UK homes sit at D or E, with clear room to improve.
Which upgrade improves my rating the most?
It depends on your home, but insulation and an efficient heating system typically make the biggest difference.
Do I need a new EPC after upgrades?
To reflect improvements on paper you’d arrange a new assessment — useful if you’re selling or letting.