Updates since October 2025:

New fuels manager

The fuels manager has been rewritten as part of our (now almost complete!) rewrite of HRP over the last years. The new layout is easier to read at a glance.

There's also now a 'last updated' field. It's highlighted in red if there is newer fuel pricing information available, and you can update to the latest fuel pricing data by clicking the "update fuels" button on the top left of the page. We recommend that you do that if you are revisiting an old assessment and re-modelling the situation.

New heating system section

The heating systems section of the Heating page has been rewritten and looks a little different now. There's two major usability enhancements here. The first is that warnings will now appear when the fractions of the different systems do not add up to 1, or when the main/secondary heating system fields are set to values that don't make sense.

The second is that we've added some fields to the libraries to avoid assessors needing to enter that data every time. For example, a gas boiler will only be able to use gas as its fuel now. This removes a longstanding complaint, and all we can say is sorry it took so long to make it happen! We've also added a 'provides water/space/water+space heating' field to the libraries so that you don't have to specify it manually most of the time after adding a system to an assessment. The library updates to make use of this feature are currently being worked on, but will be finished soon.

Minor changes

For households in Scotland, flood risk input is improved and aligns with the Scottish government data.

The import/export page has also been rewritten, but there is no functionality change.

Future plans

In early 2026 we'll be working on producing Home Retrofit Plan reports (Medium Term Improvement Plans in PAS2035 terminology) and outputting more useful information for heat pump installations, both as part of our Community of Practice project.

As usual, if you have any queries, questions or complaints, please reach out to us on support@retrofitplanner.app.