Gwynedd house energy efficiency

June 2023

Houses are energetically very inefficient. The average house energy rating in Gwynedd county is 53.1, E rating. This is by 9.8 worse score than the average house energy rating in England and Wales. The average potential rating is 77.1, C rating.

Gwynedd houses by energy rating

Energy rating	Gwynedd	England & Wales
█ A	0.5%	0.2%
█ B	4.2%	8.6%
█ C	36.7%	54.9%
█ D	13.2%	15.3%
█ E	24.1%	16.5%
█ F	14.6%	3.7%
█ G	6.5%	1.0%

Gwynedd houses by potential energy rating

Potential energy rating	Gwynedd	England & Wales
█ A	5.7%	5.8%
█ B	44.5%	57.4%
█ C	34.6%	32.2%
█ D	3.3%	1.6%
█ E	4.4%	1.5%
█ F	2.2%	0.4%
█ G	5.2%	1.1%

Gwynedd houses by main heating control energy efficiency

Main heating control	Gwynedd	England & Wales
█ very poor	4.2%	5.2%
█ poor	15.2%	5.6%
█ average	30.3%	28.7%
█ good	44.9%	53.3%
█ very good	5.3%	7.2%

Gwynedd houses by main heating energy efficiency

Main heat efficiency	Gwynedd	England & Wales
█ very poor	9.2%	1.8%
█ poor	11.8%	2.4%
█ average	30.9%	9.0%
█ good	46.2%	83.3%
█ very good	1.8%	3.5%

Gwynedd houses by walls energy efficiency

Walls efficiency	Gwynedd	England & Wales
█ very poor	34.9%	23.8%
█ poor	15.4%	16.6%
█ average	8.0%	12.3%
█ good	34.5%	38.5%
█ very good	7.2%	8.8%

Gwynedd houses by windows energy efficiency

Windows efficiency	Gwynedd	England & Wales
█ very poor	5.6%	3.9%
█ poor	5.4%	3.9%
█ average	51.7%	55.8%
█ good	32.3%	28.2%
█ very good	5.0%	8.1%

Gwynedd houses by hot water heating energy efficiency

Hot water heating energy efficiency	Gwynedd	England & Wales
█ very poor	18.1%	4.0%
█ poor	15.8%	6.6%
█ average	22.7%	13.6%
█ good	40.1%	71.0%
█ very good	3.4%	4.9%

Gwynedd houses by lighting energy efficiency

Lightning energy efficiency	Gwynedd	England & Wales
█ very poor	10.7%	12.6%
█ poor	8.1%	9.0%
█ average	13.7%	15.1%
█ good	17.5%	17.4%
█ very good	50.0%	45.9%