Mike Posted March 18, 2020 Share Posted March 18, 2020 20 minutes ago, Oz07 said: I found cheaper to go with non passiv house rated unit That's often the case. However note that Passivhaus certified units come with a more realistic measure of their heat recovery rate compared to non-certified units (Paul have a short explanation), and that heat recovery rate and electrical power use determine the long-term payback. Link to comment Share on other sites More sharing options...
Taff Posted March 18, 2020 Author Share Posted March 18, 2020 So I’m guessing the design is part of the price from BPC Link to comment Share on other sites More sharing options...
Taff Posted March 18, 2020 Author Share Posted March 18, 2020 Ok so have been offered the two quotes both with 2 options. Anyone able to advise which option and either standard or premium? There’s nowt in it just the premium is shouting whooaaaa buy me buy me! Link to comment Share on other sites More sharing options...
dpmiller Posted March 18, 2020 Share Posted March 18, 2020 IIRC the premium uses the slightly more flexy duct. I paid for my design, as I wanted it prior to buying the stuff (and ended up getting the unit elsewhere), I think it was £100 or £150, and it was credited against the subsequent order as I recall Link to comment Share on other sites More sharing options...
Taff Posted March 18, 2020 Author Share Posted March 18, 2020 Yep they have just confirmed that both the cost and the flexible duct ? Link to comment Share on other sites More sharing options...
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