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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Oct 2, 2025
Profile Activity
Topics: 23 / Replies: 479
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Reply
RE: Is the Grant controller a thermostat?

Hi @roamingbull. Another Grant unit 'commissioned' without WC enabled? There's definitely a pattern here. Grant are still coming out of the dark ages ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

This is a common problem, and the Chofu/Grant ASHP unit seems to frost up very quickly. I have my thoughts why, and that's simply because it's not des...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

@daveb Hi Dave, weather compensation is a must - and Grant should be enabling it on every MCS install. There's evidence from multiple Grant ASHP users...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Build - Grant Aerona3 10kW - Questions and observations

@ggw Hi there. I'm in heating too with my 10kW Grant Aerona. I'll share some info and hope not to tread on any of this forum Stalwarts' toes.... You...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Areona 17kw questions/concerns

@daniel 55degC is your HW max storage temp. That makes sense as Grant ASHP can provide up to 60degC. 50degC is the system heating design temp. A touch...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Areona 17kw questions/concerns

@daniel nothing wrong with the pics of the outdoor unit. Grant say 'over 300mm' clearance to the wall behind the coil inlet face. Yours looks a little...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Areona 17kw questions/concerns

@daniel nothing wrong with those parameters for HW generation. 4degC over flow and return is about what I see. ASHP is pulling quite a high power in H...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Areona 17kw questions/concerns

Hi @daniel, if you can share some info & answer a few questions I'm sure people will try to help & share experience with Grant installs. 17k...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: moving from ASHP to Gas Combi

Hi @ninja-tiger, I think British Gas might be stalling or not wanting to do the install. The job might not be as straightforward as a simple gas boile...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How to keep SunSynk batteries warm?

@windsor-tg Sunsynk battery data sheet./p> Seems to indicate no de-rating between 0 and 50degC. 'Operating temperature' might be inside the battery,...

2 years ago
Forum
Energy Storage
Reply
RE: Which is more efficient Solar Diverter to Immersion/Hot water cylinder or Combi Direct Hot water on demand?

Solar diverter for DHW = free (when surplus solar) * Heat pump for DHW = 200-250% efficient (by far the most efficient electrical method of producin...

2 years ago
Forum
Solar Thermal & Power Diverters
Reply
RE: How to keep SunSynk batteries warm?

That's a tidy install @windsor-tg. Li-ion batteries only tend to de-rate charging capacity below 0degC. How often does your garage get below 0degC? Yo...

2 years ago
Forum
Energy Storage
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