Your landlord is legally required to have a valid EPC for the property and to provide you with a copy before you move in. The certificate rates the property's energy efficiency and includes recommendations for improvements. It's valid for 10 years.
Since April 2020, it's been illegal for landlords in England to let a property with an EPC rating below E, unless they've registered a valid exemption. If your property has a rating of F or G and no exemption is in place, your landlord is in breach of the Minimum Energy Efficiency Standards (MEES) regulations. You can report this to your local council, which can issue penalties of up to Β£5,000.
The government has announced plans to raise the minimum EPC requirement to C by 2030, which will require significant numbers of private rental properties to be improved. This will affect your heating bills, comfort, and the long-term quality of the property you live in.