Change my old CH boiler for a new one?

System

Mister_G wrote: »

I note that the OP has replaced a 2/3 way valve. Looks like that may be to switch between heating HW and CH or both, so perhaps a dual channel controller is all that's needed?

Some form of control is necessary; however, it is unlikely to make a significant saving for the OP.

https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/648337/heating-controls-compensation-tpi-bre.pdf

Quote: Evidence for Energy Savings: Five sources of test evidence relating to energy savings were identified for TPI control along with one for weather compensation and one for load compensation control. The evidence sources were evaluated based on the extent to which the test conditions were representative of heating systems and operating conditions that are typical for UK housing. This exercise demonstrated that there is a lack of evidence regarding the energy savings that these controls are likely to achieve in practice. Unquote

[Deleted User]

Your gas usage looks fine to me.


Depending on your circumstances:-


https://www.moneysavingexpert.com/family/grant-grabbing/