Christine Burns MBE 🏳️‍⚧️📚⧖Mar 19
Rather than argue with the naysayers all over the internet who’ll claim that heat pumps don’t work, the boffins at Octopus have produced a live dashboard to chart the online data they get from all the thousands of systems they’ve installed. This is a fantastic resource. Looking at the numbers for the fleet as a whole I’m pleased to say that ‘Rosy’ (my Cosy) is bang on the norm as far as performance goes. https://octopus.energy/cosy-heat-pump-performance/?utm_medium=email&_hsenc=p2ANqtz-92N1fVWdFAehre8wYictiCqGgrnpGeD9V5_EB3att0qPTctKB8kOeNTffe3KS1P7Gv41P9c_5XE4noQ-RqhVWDvpjwnA&_hsmi=131414226&utm_content=131414226&utm_source=hs_email
Show threadGrahame Gardner 🏴󠁧󠁢󠁳󠁣󠁴󠁿Mar 19
@christineburns Would love to see how they propose to install them for a top floor Glasgow tenement flat.
Show threadChristine Burns MBE 🏳️‍⚧️📚⧖
@scotdowser There are other options. Communal housing suggests a communal solution but the experts would be able to tell you what’s best. I wouldn’t use an air source heat pump to bake a cake but the unsuitability doesn’t prove anything.
Mar 19 at 5:47pmWeb
Show threadEmelia/EmiMar 19

@christineburns @scotdowser My current dwelling here in the US has the outdoor units for each apartment perched on every available inch of roof space, although the heat here is very much still gas at the moment. (They installed the heat pumps without reversing valves for some strange reason, so they only work in "cooling" mode... Not that I really mind, given that my computers put out enough heat to keep the place "rather uncomfortably warm" without the thermostat's assistance, even in the dead of winter, when combined with my downstairs neighbors seemingly having the thermostat preferences of a lizard)

Though it is possible to have multi-head systems for larger flats or communal heating, so you could end up needing fewer outside units than you have apartments in the building.

Show threadLisPiMar 20

@christineburns @scotdowser Newer refrigerants (or sometimes just a better design with the same refrigerant) can actually do pretty well even for air-sourced heating.

Personally I would hope for a zoned setup for anything communal, rather than cheaper hacks that should never be used (one also sees similar hacks on water radiator heating in crappy buildings).

Some dual-conduit portable ACs can also do heating, among other options (those are the ones that don't create a negative pressure, anything that creates a negative pressure is a bad idea).