Last seen: Dec 18, 2025
@dodgyknee Yes, I'm wondering, well, hoping, that the homely interface is retrofittable to the Aerona3. The Aerona3 uses RS485 so fingers crossed. I w...
We were off mains gas and on oil, so wanted to get rid as the oil boiler was life expired. No regrets about going all-renewable, solar PV+battery and ...
@roamingbull it's a lot of faff and trial and error. Partly that's because Grant install dumb systems with no intelligence and rather clunky external ...
Hi @roamingbull. Another Grant unit 'commissioned' without WC enabled? There's definitely a pattern here. Grant are still coming out of the dark ages ...
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...
@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...
@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...
@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...
@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...
@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...
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...
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...
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RE: Ecodan Pump Issues… Circulation pump turns off when heat pump compressor turns off
Can you tell me if you have an FTC6 or FTC7 If you h...
By ASHP-BOBBA , 32 seconds ago
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RE: Ideal HP290 14kW ASHP - how to optimise
Roughly this should cost you £250-£300 per peak month a...
By ASHP-BOBBA , 51 minutes ago
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RE: Installer Fitted 9kW Instead of 11kW Heat Pump and Changed MCS Paperwork - What do I do?
@jamespa thank you again. I know using the offset to tr...
By MairiA , 2 hours ago
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RE: Recommended home battery inverters + regulatory matters - help requested
Here's that section of the Installation Manual: &nb...
By Transparent , 4 hours ago
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RE: New Daikin 11kW Altherma 3M install - is it working as it should?
@toodles Thank you for your input. As the days have got...
By Synthbuilder , 4 hours ago
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RE: Advice for a novice on Mitsubishi Ecodan 6kW
Frost Protect/Freeze Stat is an operation mode, where D...
By F1p , 5 hours ago
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RE: Fan unit Making terrible noise HELP!!
@gutoffowc Oh no, sorry to hear that, are you in the Ke...
By ASHP-BOBBA , 6 hours ago
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RE: Sunsynk Whole House Backup Issue
@sheriff-fatman - could you please re-post that in the ...
By Transparent , 7 hours ago
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RE: Running my new Nibe ASHP efficiently
I didn't. I spent a while manually messing around with ...
By jamieheatpumpnew , 9 hours ago
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RE: I’m glad the cold spell is over!
I comparison with the 65kWh used above yesterday was on...
By Judith , 9 hours ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!
I should think so, I thought that pretty much universal...
By JamesPa , 10 hours ago
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RE: Setback savings - fact or fiction?
I'm also inclined to look into how a defrost is actuall...
By cathodeRay , 10 hours ago
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MLCP (Multi-Layer Composite Pipe) for ASHP
@editor nope. The info you reported was sufficient for ...
By iotum , 20 hours ago
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RE: Experience - New Build / Complete New Heating System
@vincro I would be surprised if it is much above 5 to 6...
By ASHP-BOBBA , 21 hours ago
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RE: Post-Traumatic Heat Pump Stress Disorder
Yes bang on and maybe I can illustrate that by way of e...
By iotum , 24 hours ago
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RE: Replacing my 18 month old Hitachi Yutaki ASHP
A big thank you to @jamespa for all his efforts online ...
By trebor12345 , 1 day ago
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RE: GSHP WOES! Midland based engineer recommendations?
@editor It is indeed for servicing. My current service ...
By Morgan , 1 day ago


