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A2WHP for the masses
Posted: Tue May 20, 2025 7:56 pm
by Joeboy
Re: A2WHP for the masses
Posted: Tue May 20, 2025 10:57 pm
by MikeNovack
Remember, touting high CoP when only one of the temperatures is specified is meaningless. So it's an immediate red flag for me when what is essentially an "ad" just gives one temp (not even saying if that's in or out at that). Similarly something like "works down to -25C" means little unless the CoP given.You can't tell if a CoP is good (close to theoretical) or awful (a small fraction of theoretical) without knowing the temps (those define the theoretical)
Re: A2WHP for the masses
Posted: Wed May 21, 2025 6:20 am
by Joeboy
MikeNovack wrote: ↑Tue May 20, 2025 10:57 pm
Remember, touting high CoP when only one of the temperatures is specified is meaningless. So it's an immediate red flag for me when what is essentially an "ad" just gives one temp (not even saying if that's in or out at that). Similarly something like "works down to -25C" means little unless the CoP given.You can't tell if a CoP is good (close to theoretical) or awful (a small fraction of theoretical) without knowing the temps (those define the theoretical)
It's all just ads. How can the masses know unless awareness is raised? I surmise that folk should walk into an IKEA (Germany) store or follow the online trail for detailed specs. This is a good thing and there are no red flags.
Re: A2WHP for the masses
Posted: Wed May 21, 2025 7:00 am
by SimonSays
Seems like IKEA are acting as an agent for Aira. The Heat Geek guys really like Aira’s install work, so I’d have faith that you’d get a really good installation.
The Aira heat pumps are R290 so I’d expect similar performance to the NIBE and Vaillant systems, both of which are well documented.