Hertfordshire flat energy efficiency
January 2026
Flats are energy-efficient. The average flat energy rating in Hertfordshire county is 71.5, C rating. This is by 1.6 better score than the average flat energy rating in England and Wales. The average potential rating is 76.8, C rating.
Hertfordshire flats by energy rating
| Energy rating | Hertfordshire | England & Wales |
|---|
| █ A | 0.0% | 0.1% |
| █ B | 19.4% | 17.4% |
| █ C | 66.8% | 64.6% |
| █ D | 6.2% | 7.7% |
| █ E | 6.3% | 8.2% |
| █ F | 1.0% | 1.6% |
| █ G | 0.3% | 0.5% |
Hertfordshire map of energy efficiency of flats
Hertfordshire flats by potential energy rating
| Potential energy rating | Hertfordshire | England & Wales |
|---|
| █ A | 0.1% | 0.1% |
| █ B | 28.7% | 27.1% |
| █ C | 68.0% | 68.9% |
| █ D | 1.8% | 2.0% |
| █ E | 1.2% | 1.4% |
| █ F | 0.2% | 0.3% |
| █ G | 0.0% | 0.1% |
Hertfordshire flats by main heating control energy efficiency
| Main heating control | Hertfordshire | England & Wales |
|---|
| █ very poor | 2.6% | 4.7% |
| █ poor | 15.0% | 14.1% |
| █ average | 22.5% | 24.0% |
| █ good | 54.3% | 54.1% |
| █ very good | 5.6% | 3.1% |
Hertfordshire flats by main heating energy efficiency
| Main heat efficiency | Hertfordshire | England & Wales |
|---|
| █ very poor | 15.6% | 14.6% |
| █ poor | 5.6% | 4.4% |
| █ average | 13.5% | 12.2% |
| █ good | 61.8% | 62.8% |
| █ very good | 3.5% | 5.9% |
Hertfordshire flats by walls energy efficiency
| Walls efficiency | Hertfordshire | England & Wales |
|---|
| █ very poor | 9.3% | 21.9% |
| █ poor | 13.8% | 14.7% |
| █ average | 11.4% | 8.9% |
| █ good | 47.3% | 39.4% |
| █ very good | 18.2% | 15.2% |
Hertfordshire flats by windows energy efficiency
| Windows efficiency | Hertfordshire | England & Wales |
|---|
| █ very poor | 4.4% | 8.9% |
| █ poor | 2.7% | 4.4% |
| █ average | 43.4% | 42.0% |
| █ good | 33.6% | 31.7% |
| █ very good | 15.9% | 12.9% |
Hertfordshire flats by hot water heating energy efficiency
| Hot water heating energy efficiency | Hertfordshire | England & Wales |
|---|
| █ very poor | 13.2% | 14.2% |
| █ poor | 8.3% | 6.6% |
| █ average | 16.7% | 13.5% |
| █ good | 57.0% | 58.3% |
| █ very good | 4.8% | 7.4% |
Hertfordshire flats by lighting energy efficiency
| Lightning energy efficiency | Hertfordshire | England & Wales |
|---|
| █ very poor | 9.5% | 10.8% |
| █ poor | 5.6% | 5.4% |
| █ average | 11.2% | 10.2% |
| █ good | 14.2% | 13.9% |
| █ very good | 59.6% | 59.8% |
Plumplot area insights - interactive charts and maps
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