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Daikin Octopus installation update - I saw my first defrost. 😍😂

 
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Air Source Heat Pumps (ASHPs)
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 Judith
(@judith)
Noble Member Member
Joined: 2 years ago
Posts: 413
03/02/2025 10:26 am  

@mike-patrick it looks as if your pump is in a local hollow, does the cold air from the pump hang around there or does it dissipate? Have any of the experts you’ve used to try to improve the performance suggested this is a factor?


2kW + Growatt & 4kW +Sunnyboy PV on south-facing roof Solar thermal. 9.5kWh Givenergy battery with AC3. MVHR. Vaillant 7kW ASHP (very pleased with it) open system operating on WC


   
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 Mike Patrick
(@mike-patrick)
Honorable Member Member
Joined: 5 years ago
Posts: 181
03/02/2025 11:09 am  

No-one has suggeted that although I've checked myself that the exhaust air is clearing the ASHP. It's not so much a hollow as a gentle slope of the garden border at that point - looks worse in thge picture than it is. It is on the north side of the outbuilding so rarely gets direct sunlight, except in the summer months when the sun is overhead. Unfortunately it wasn't possible to site it elsewhere..

 

Mike


Grant Aerona HPID10 10kWh ASHP


   
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Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 3591
03/02/2025 6:15 pm  

Had some fun with this one @mike @mike-patrick.

Sound on, and listen for the Mike shout-out 🤣 


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 Mike Patrick
(@mike-patrick)
Honorable Member Member
Joined: 5 years ago
Posts: 181
03/02/2025 10:49 pm  

Great track. Love it.

Mike


Grant Aerona HPID10 10kWh ASHP


   
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Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 3591
03/02/2025 10:51 pm  

@mike-patrick exclusively done for the forums. A “normal” version is available with a commercial track for the rest of the world to enjoy 😉 


Get a copy of The Ultimate Guide to Heat Pumps

Subscribe and follow our Homeowners’ Q&A heat pump podcast


   
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 Mike Patrick
(@mike-patrick)
Honorable Member Member
Joined: 5 years ago
Posts: 181
12/10/2025 1:23 pm  

@editor

Just had my first defrost  of this season.

Outside temperature dropped to 6C overnight, so well off freezing.

But it was a damp foggy morning. The moisture was literally dropping out of the air when I went for an early bike-ride.

Sure enough my Grant Aerona3 frosted up (thankfully only once) and kWh usage climbed.

 

Mike


Grant Aerona HPID10 10kWh ASHP


   
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