About the ratings for 'Fitting a solar water heater'

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 a solar water heater'.

CO₂ reduction

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

For this action:

CO₂ saving of 330kg per year based on a gas-heated, 3 bedroom, semi-detached home.

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 of £3,200-4,500 before grant for a 3 to 4 square metre system. £40 annual saving, depending on the fuel replaced, for the average domestic system.

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