About the ratings for 'Fitting double glazing'

All Bloom actions are rated on CO₂ reduction, popularity, easiness and cost. The methodology behind each rating is defined below, along with further rating information for 'Fitting double glazing'.

CO₂ reduction

The average emission reduction resulting from this action in the first 12 months, in kilograms or tonnes.

For this action:

CO₂ reduction: 740kg, based on a gas heated semi-detached house with 3 bedrooms. Installed Costs and paybacks assume that installation is undertaken by a professional installer and are un-subsidised.

Popularity

Number of registered Bloom users who have planted this action seed.

Easiness

How easy it is to complete the action, as rated by registered Bloom users.

Please note: during beta testing, this value has been editorially assigned. When enough users have rated an action, this will represent the average user rating

Cost

Average outlay required to initiate an action in £.

For this action:

Cost: £4000; annual saving: £90. Based on a 3 bed semi going from single to Low-e double glazing. Source: BRE

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