Last seen: Sep 10, 2025
I'd echo what @allyfish said. I too have a 10kW Grant, and about 150m2 to heat. During the cold snap I was consuming 50-60kWh per day, and this didn't...
@editor I think it's important to focus on "energy used" rather than COP. HP owners tend to focus on COP, which is quite a novel concept for non-HP pe...
I've been bending my brain trying to balance my LLH (Grant install one by default these days it seems - I suspect to ease the installer's job from wha...
@sentinam Yes. Parameter '21 04'; the temperature at which the HP will be aiming at the high LWT value set in parameter '21 02'. By 'High LWT' I meant...
@mab I think most have changed their low end to 0 from -4, I have. I guess once you're at zero, you'll need 'high LWT'. I'm getting the figures from...
Hopefully things have improved now the cold snap has reached its end ... ? There are many (too many) parameters to consider to improve performance, ...
@mab As it's been seconds since any graphs were posted, here are two interesting ones from over the weekend, both showing a couple of defrost periods....
@marvinator80 Who are you getting to service? Do you have a local engineer, or are you going to Grant via their "annual service plan"?
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