marshian Posted January 2 Share Posted January 2 35 minutes ago, SteamyTea said: What base temperature did you use for your HDDs? 16.5 is my base - slightly higher than the normal 15.5 but the HDD site has a regression tool that I used to establish it after the last round of improvements and I’m pretty happy with the base line You have to bear in mind it’s a stupid shape house with a lot of rooms having 3 external walls which means it’s not a std box with two levels Link to comment Share on other sites More sharing options...
SteamyTea Posted January 2 Share Posted January 2 22 minutes ago, marshian said: regression tool When I get some time, I shall see what I can match to my data. 23 minutes ago, marshian said: a stupid shape house Most houses are, They should really be domes. Stick them on a turntable and they can track the sun, or untrack the sun, depending on seasons. Link to comment Share on other sites More sharing options...
marshian Posted January 2 Share Posted January 2 37 minutes ago, SteamyTea said: When I get some time, I shall see what I can match to my data. Regression tool is on this site - dead easy to use if you have data in xls or similar table format https://www.degreedays.net Only caveat is do your best to exclude HW energy usage or you'll get a funny answer (ie a lot more than your true baseline temp) 37 minutes ago, SteamyTea said: Most houses are, They should really be domes. Stick them on a turntable and they can track the sun, or untrack the sun, depending on seasons. Eskimos had the right idea then Link to comment Share on other sites More sharing options...
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