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Hertfordshire flat energy certificates

The following charts compare flat energy certificates in Hertfordshire county to the flat energy certificates in whole England and Wales. Outer ring charts show share in Hertfordshire, inner charts show share for England and Wales. Data is taken from energy certificates for domestic buildings. The certificates were issued between 2008-2016. Data is available for more than 50% of all domestic properties. In case of multiple certificate for one property, only the latest available certificate data was used in the charts.

Hertfordshire flats by energy rating

The latest available energy rating converted into a linear 'A to G' rating (from the most energy efficient to the least energy efficient - G). Energy rating was measured in the period of 2008-2016

Hertfordshire flats by energy rating
Energy ratingHertfordshireEngland & Wales
A0.0%0.1%
B17.8%16.1%
C65.0%61.3%
D7.2%8.8%
E7.2%9.6%
F2.2%3.1%
G0.6%1.0%

Hertfordshire flats by potential energy rating

Estimated potential energy rating converted into a linear 'A to G' rating (A - is the most energy efficient)

Hertfordshire flats by potential energy rating
Potential energy ratingHertfordshireEngland & Wales
A0.0%0.1%
B29.9%26.9%
C64.3%65.7%
D2.7%3.2%
E2.2%2.7%
F0.5%0.8%
G0.4%0.6%

Hertfordshire flats by main heating control energy efficiency

Hertfordshire flats by main heating control energy efficiency
Main heating controlHertfordshireEngland & Wales
very poor3.7%6.8%
poor22.0%20.9%
average30.2%30.2%
good39.7%39.4%
very good4.5%2.7%

Hertfordshire flats by main heating energy efficiency

Hertfordshire flats by main heating energy efficiency
Main heat efficiencyHertfordshireEngland & Wales
very poor10.9%9.9%
poor11.4%9.3%
average13.3%12.0%
good56.8%59.8%
very good7.6%8.9%

Hertfordshire flats by walls energy efficiency

Hertfordshire flats by walls energy efficiency
Walls efficiencyHertfordshireEngland & Wales
very poor10.4%25.4%
poor14.6%14.0%
average6.1%4.3%
good55.4%45.4%
very good13.4%10.9%

Hertfordshire flats by windows energy efficiency

Hertfordshire flats by windows energy efficiency
Windows efficiencyHertfordshireEngland & Wales
very poor7.2%12.5%
poor2.6%4.8%
average44.7%40.5%
good33.6%33.4%
very good11.9%8.8%

Hertfordshire flats by hot water heating energy efficiency

Hertfordshire flats by hot water heating energy efficiency
Hot water heating energy efficiencyHertfordshireEngland & Wales
very poor11.7%11.7%
poor8.7%7.0%
average20.5%17.2%
good50.4%53.8%
very good8.7%10.3%

Hertfordshire flats by lighting energy efficiency

Hertfordshire flats by lighting energy efficiency
Lightning energy efficiencyHertfordshireEngland & Wales
very poor18.2%19.9%
poor10.6%9.6%
average19.4%16.3%
good16.6%16.8%
very good35.2%37.6%

Associated reports:

Hertfordshire home energy certificates

Hertfordshire house energy certificates

Hertfordshire energy costs

Hertfordshire home features

Hertfordshire salary and unemployment

Hertfordshire real estate market

Hertfordshire population statistics

Hertfordshire crime statistics

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