Home energy performance ratio - Revision history

Designing Buildings at 07:33, 19 February 2021

2021-02-19T07:33:28Z

← Older revision		Revision as of 07:33, 19 February 2021
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	* SAP assessment.		* SAP assessment.

−	[[Category:~~Standards_/_measurements~~]] [[Category:DCN_Standard]]	+	[[Category:DCN_Definition]] [[Category:DCN_Standard]] [[Category:Definitions]] [[Category:Standards_/_measurements]]

Designing Buildings at 07:58, 5 April 2020

2020-04-05T07:58:27Z

← Older revision		Revision as of 07:58, 5 April 2020
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	* Cooling.		* Cooling.
	* Energy demand.		* Energy demand.
		+	* Energy Performance Ratio for New Constructions.
	* Heating.		* Heating.
	* Home quality mark.		* Home quality mark.
	* SAP assessment.		* SAP assessment.

−	[[Category:Standards_/_measurements]]	+	[[Category:Standards_/_measurements]] [[Category:DCN_Standard]]

Designing Buildings at 11:30, 17 August 2019

2019-08-17T11:30:13Z

← Older revision		Revision as of 11:30, 17 August 2019
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	* Building Regulations.		* Building Regulations.
	* Building Research Establishment.		* Building Research Establishment.
−	* CO emissions
	* Cooling.		* Cooling.
−	* Cost output.
	* Energy demand.		* Energy demand.
	* Heating.		* Heating.

Designing Buildings: Created page with "The [http://www.homequalitymark.com/standard Home Quality Mark One, Technical Manual SD239, England, Scotland & Wales], published by BRE in 2018 defines the Home energy perfo..."

2019-08-17T11:29:41Z

Created page with "The [http://www.homequalitymark.com/standard Home Quality Mark One, Technical Manual SD239, England, Scotland & Wales], published by BRE in 2018 defines the Home energy perfo..."

New page

The [http://www.homequalitymark.com/standard Home Quality Mark One, Technical Manual SD239, England, Scotland & Wales], published by BRE in 2018 defines the Home energy performance ratio (HEPR) as:

{|
|width="100%"|
A metric that is unique to the HQM that is calculated by the HQM energy engine using modelled outputs from approved building energy calculation software, against which HEPR credits are awarded.

It is a ratio that defines the performance of a HQM assessed home in terms of its:

# Heating and cooling energy demand (the fabric performance).
# Primary energy consumption (system efficiency).
# Total resulting CO emissions.

For each metric, the homes actual performance is compared against the relevant National Building Regulations compliant standard (i.e. a baseline), and the comparison expressed as a percentage improvement.

The percentage improvement for each metric is then compared against a best practice performance level for modelled stock of house types, and then ‘translated’ into a ratio of performance for each metric. These ratios are then weighted for each metric and added together to determine a single overall HEPR.

A description of how to obtain a home’s HEPR is summarised in Methodology on P123 of the Manual. Greater detail of how the HEPR is defined and calculated is provided in the HQM energy guidance document.
|}

--[[User:BRE_Group|BRE Group]]

= Related articles on Designing Buildings Wiki =

* BRE articles.
* BREEAM.
* Building Regulations.
* Building Research Establishment.
* CO emissions
* Cooling.
* Cost output.
* Energy demand.
* Heating.
* Home quality mark.
* SAP assessment.

[[Category:Standards_/_measurements]]