Hertfordshire flat energy certificates

June 2020

The average flat energy rating in Hertfordshire county is 70.8, C rating. This is by 1.8 better score than the average flat energy rating in England and Wales. The average potential rating is 76.4, C rating.

Hertfordshire flats by energy rating

Energy rating	Hertfordshire	England & Wales
█ A	0.0%	0.1%
█ B	20.2%	17.6%
█ C	63.9%	61.5%
█ D	7.1%	8.5%
█ E	7.0%	9.4%
█ F	1.4%	2.1%
█ G	0.3%	0.7%

Hertfordshire flats by potential energy rating

Potential energy rating	Hertfordshire	England & Wales
█ A	0.0%	0.1%
█ B	30.4%	27.6%
█ C	65.1%	67.2%
█ D	2.4%	2.6%
█ E	1.7%	2.0%
█ F	0.3%	0.5%
█ G	0.1%	0.1%

Hertfordshire flats by main heating control energy efficiency

Main heating control	Hertfordshire	England & Wales
█ very poor	3.1%	5.9%
█ poor	17.6%	16.4%
█ average	26.3%	27.0%
█ good	46.1%	46.9%
█ very good	6.9%	3.8%

Hertfordshire flats by main heating energy efficiency

Main heat efficiency	Hertfordshire	England & Wales
█ very poor	13.2%	12.5%
█ poor	7.4%	6.0%
█ average	13.5%	12.1%
█ good	60.5%	61.7%
█ very good	5.4%	7.7%

Hertfordshire flats by walls energy efficiency

Walls efficiency	Hertfordshire	England & Wales
█ very poor	9.8%	23.8%
█ poor	13.6%	14.3%
█ average	7.6%	6.0%
█ good	50.2%	41.1%
█ very good	18.8%	14.9%

Hertfordshire flats by windows energy efficiency

Windows efficiency	Hertfordshire	England & Wales
█ very poor	5.7%	10.8%
█ poor	2.1%	4.0%
█ average	43.1%	41.0%
█ good	31.8%	31.2%
█ very good	17.4%	13.1%

Hertfordshire flats by hot water heating energy efficiency

Hot water heating energy efficiency	Hertfordshire	England & Wales
█ very poor	12.6%	13.4%
█ poor	8.0%	6.5%
█ average	18.3%	14.8%
█ good	54.2%	55.8%
█ very good	6.8%	9.6%

Hertfordshire flats by lighting energy efficiency

Lightning energy efficiency	Hertfordshire	England & Wales
█ very poor	13.8%	15.3%
█ poor	7.9%	7.4%
█ average	15.7%	13.6%
█ good	15.5%	15.3%
█ very good	47.0%	48.3%