March 24, 20215 yr Has anybody apart from @PeterStarck used a compact unit (i.e. combined heating, ventilation and hot water in one box) in their build, and if so what has your experience been? We're in the planning stages for a Passivhaus, and the layout we have at the moment actually looks very suitable for a compact unit in the utility room. We've also got a huge back garden, and since Nilan do a compact unit with a 3kW built in GSHP I'm starting to suspect that might be a very good option for us since it doesn't seem to be much more expensive than the base model.
March 24, 20215 yr 7 minutes ago, pdf27 said: GSHP EAHP https://en.wikipedia.org/wiki/Exhaust_air_heat_pump
March 24, 20215 yr Author 9 minutes ago, SteamyTea said: EAHP https://en.wikipedia.org/wiki/Exhaust_air_heat_pump Nope, they also do ones with add-ons for external ASHP or GSHP coils not just as EAHPs - https://en.nilan.dk/en-gb/frontpage/solutions/domestic-solutions/compact-solutions/domestic-solutions-total-solutions-compact-p-range/compact-p-geo How well EAHPs work will depend on how big your incidental & solar gains are, my suspicion is that in our case they won't be high enough to work well.
March 24, 20215 yr 20 minutes ago, pdf27 said: Nope, they also do ones with add-ons for external ASHP or GSHP coils not just as EAHPs Interesting. 20 minutes ago, pdf27 said: how big your incidental & solar gains are Yes, no good for me.
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