Cardiff house energy efficiency

June 2023

Houses are ordinary efficient. The average house energy rating in Cardiff postcode area is 63.6, D rating. This is by 0.7 better score than the average house energy rating in England and Wales. The average potential rating is 81.9, B rating.

Cardiff houses by energy rating

Energy rating	Cardiff	England & Wales
█ A	0.1%	0.2%
█ B	7.6%	8.6%
█ C	58.1%	54.9%
█ D	15.7%	15.3%
█ E	15.3%	16.5%
█ F	2.6%	3.7%
█ G	0.6%	1.0%

Cardiff houses by potential energy rating

Potential energy rating	Cardiff	England & Wales
█ A	4.9%	5.8%
█ B	62.7%	57.4%
█ C	29.7%	32.2%
█ D	1.2%	1.6%
█ E	0.8%	1.5%
█ F	0.2%	0.4%
█ G	0.5%	1.1%

Cardiff houses by main heating control energy efficiency

Main heating control	Cardiff	England & Wales
█ very poor	9.9%	5.2%
█ poor	4.0%	5.6%
█ average	32.1%	28.7%
█ good	49.0%	53.3%
█ very good	5.0%	7.2%

Cardiff houses by main heating energy efficiency

Main heat efficiency	Cardiff	England & Wales
█ very poor	0.9%	1.8%
█ poor	0.9%	2.4%
█ average	4.4%	9.0%
█ good	91.0%	83.3%
█ very good	2.7%	3.5%

Cardiff houses by walls energy efficiency

Walls efficiency	Cardiff	England & Wales
█ very poor	32.0%	23.8%
█ poor	17.3%	16.6%
█ average	9.0%	12.3%
█ good	34.5%	38.5%
█ very good	7.2%	8.8%

Cardiff houses by windows energy efficiency

Windows efficiency	Cardiff	England & Wales
█ very poor	2.2%	3.9%
█ poor	3.1%	3.9%
█ average	58.9%	55.8%
█ good	29.6%	28.2%
█ very good	6.3%	8.1%

Cardiff houses by hot water heating energy efficiency

Hot water heating energy efficiency	Cardiff	England & Wales
█ very poor	2.2%	4.0%
█ poor	5.7%	6.6%
█ average	9.8%	13.6%
█ good	77.8%	71.0%
█ very good	4.5%	4.9%

Cardiff houses by lighting energy efficiency

Lightning energy efficiency	Cardiff	England & Wales
█ very poor	12.1%	12.6%
█ poor	10.0%	9.0%
█ average	16.5%	15.1%
█ good	17.8%	17.4%
█ very good	43.5%	45.9%