A Domestic Energy Performance Certificate (EPC) shows how energy-efficient a home is and how much it costs to run.
In the UK, properties receive a rating from A (most efficient) to G (least efficient) — and in 2026 this rating strongly influences property value, rental eligibility, and buyer interest.
EPCRATE Services — Quick Links
If you need an assessment:
👉 https://epcrate.co.uk/domestic-epc
What an EPC Rating Actually Measures
An EPC is calculated using government-approved software based on:
Heating system efficiency
Insulation levels
Window performance
Lighting efficiency
Hot water systems
Renewable energy features
Property size & construction type
It also estimates:
Annual energy costs
Carbon emissions
Potential rating after improvements
Why Your EPC Rating Matters in 2026
Energy efficiency now affects real financial outcomes.
Higher rating means:
Lower utility bills
Faster property sale
Higher buyer confidence
Easier mortgage approval
Lower rating means:
Negotiations on price
Rental restrictions (below E)
Required upgrades before letting
Book an EPC quickly:
👉 https://epcrate.co.uk/booking/
Typical Running Cost Differences
| EPC Band | Typical Efficiency | Running Cost Impact |
|---|---|---|
| A–B | Very efficient | Very low bills |
| C | Modern standard | Affordable bills |
| D | Average UK home | Moderate bills |
| E | Rental minimum | Higher bills |
| F–G | Inefficient | Expensive to run |
The Fastest Ways to Improve Your EPC Score
1. Upgrade Lighting to LED
One of the easiest improvements.
Low cost
Immediate EPC points
No building work required
2. Improve Loft Insulation
Major impact on ratings.
Recommended depth: 270mm+
Heat loss through roofs can reach 25%.
3. Install Smart Heating Controls
Add:
Thermostatic radiator valves
Programmers
Smart thermostats
This improves heating efficiency scoring.
4. Upgrade the Boiler
Old boilers dramatically reduce EPC ratings.
Replacing a 15-year-old boiler can significantly raise the band.
5. Improve Wall Insulation
Depending on property type:
Cavity wall insulation
Internal wall insulation
External insulation systems
Large rating increase potential.
6. Replace Single Glazing
Double glazing improves both comfort and rating.
Keep certificates ready for the assessor.
7. Add Renewable Energy
Biggest rating improvements:
Solar panels
Air source heat pumps
These can push homes into A or B ratings.
Improvements with the Highest Impact
Best value upgrades:
Loft insulation
Heating controls
LED lighting
Boiler upgrade
How Long Improvements Last
Your EPC stays valid for 10 years, but you can reassess anytime after upgrades to benefit from a better rating.
View pricing:
👉 https://epcrate.co.uk/pricing/
Final Thoughts
Improving your EPC rating isn’t just about compliance — it reduces bills, increases value, and attracts buyers.
Small upgrades often create a big difference in both energy costs and market appeal.
Arrange your assessment here:
👉 https://epcrate.co.uk/booking/
EPCRate Contact Details:
150–160 City Road, London, EC1V 2NX
020 3488 4142
info@epcrate.co.uk
Written by Jino Jose
DEA & NDEA Accredited Energy Assessor · EPCRATE, London · Founded 2015
Jino Jose is the founder of EPCRATE and one of the few London assessors holding both Domestic Energy Assessor (DEA) and Non-Domestic Energy Assessor (NDEA) accreditations. He has carried out thousands of EPC assessments across all 32 London boroughs since 2015.
Last updated: · About the author →
