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Last seen: Mar 16, 2026
Hi @Denevil, just reading this, I'm probably a month or so further on my Grant ASHP system journey, 10kW Aerona3 and 150m2 EPC C house. It's a learnin...
@marvinator80 for internal pipework, yes. for external, no. Needs to be thicker wall, minimum 19mm (3/4") and weather/water and UV resistant skin. Som...
We get very cold weeks like this 4-6 weeks of the year. When I first started researching ASHP, I realised it would be more expensive than kerosene, my...
Quite a bit of coverage over on LinkedIn about this one. And so the race to the bottom begins. Price driven installs seldom hit the required quality a...
@tim441 this is really useful info and a great find. Your experience of converting from oil to ASHP mirrors mine. I'm only 3 months into the journey h...
@derek-m Grant UK in my case. By their own admission, they 'make it easy' for tradesmen used to fitting gas boilers to fit ASHPs. But that does not ma...
Maybe a bit of wear and tear? Bleed the system of air, it's not something you want in the system. I have one TRV that quietly 'sings' when it modulate...
@abernyte "If it is the manufacturers agents then at least you know it was correctly installed and setup." - you would hope so, but... We've seen mu...
Wow! ASHPs need to deliver more flow than conventional fired boiler heating systems, as they operate a much lower delta T supply and return temperatur...
Hi @kitkad, I have a Grant Aerona 10kW installed since Oct last year. It struggled a little in the December cold snap, mainly due to the time it was s...
Radiators that are only getting warm at the bottom only sounds like they are full of air. Easy to check that one. Has the Ecodan got either a manual f...
A cylinder should last more than 6 years. It could have had a manufacturing fault, but the picture seems to suggest it corroded from the inside out. B...
Latest Posts
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I believe that Valliant is currently trialling its besp...
By L8Again , 25 minutes ago
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RE: Seeking ideas / information / commiseration - Pure Drive
@little-lights If I understand you correctly your syste...
By JamesPa , 35 minutes ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
If it's like every other quiet/night/noise reduction/si...
By JamesPa , 1 hour ago
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RE: Home energy storage & battery register
AC coupled Pure Drive 10kW battery Solar PV Solis P...
By Little Lights , 13 hours ago
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RE: Rate the quality of your heat pump design and installation
@claireisamazing, that’s got to be one of the most posi...
By Mars , 13 hours ago
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Got myself in a pickle. I have two types of plugs, but ...
By David999 , 13 hours ago
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@jamespa Great, thanks - I've had a quick look at the a...
By Little Lights , 16 hours ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: ispookie666 Manufacturer: Vaillant Mo...
By ispookie666 , 16 hours ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
I'm fairly new to the forum and have not voted. Back...
By ispookie666 , 16 hours ago
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I am seeing an increasing number of occasions when my G...
By DavidAlgarve , 17 hours ago
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@transparent I have been a little reluctant to select "...
By DavidAlgarve , 18 hours ago
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RE: End-of-Life Heat Pumps: How Do You Dispose of an ASHP in the UK?
@editor Thanks Mars. I look forward to the subsequent ...
By DavidB , 23 hours ago
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RE: Anyone concerned about GivEnergy?
Fair enough. Its interesting that opentherm (for boil...
By JamesPa , 23 hours ago
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RE: Brand and installer questions for ASHP
A tank solely in the return (upstream of where the retu...
By JamesPa , 23 hours ago
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RE: UK DIY Battery: SEPLOS 48V 200Ah x2 + Sunsynk 8K – Safe Installation for Garage Conversion
thank you to all who have already replied. I have been...
By madsid , 1 day ago
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RE: Home automation and the cloud; is there a better way?
+1 It's not just cloud though. Many devices have repla...
By bobflux , 2 days ago
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RE: Summer usage. Why is my Vaillant Aerotherm using so much energy on "heating"?
So the red bars are 'DHW' and the yellow bars 'heating'...
By JamesPa , 2 days ago
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RE: Indevolt Batteries UK Support & Info Thread
Have you tried cutting the grid feed to see what actual...
By JamesPa , 2 days ago
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RE: Renewables & Heat Pumps in the News
Critics and naysayers will be negative whatever the gov...
By JamesPa , 2 days ago
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RE: Microbore heat pump installs
In principle you are almost certainly right, but in pra...
By JamesPa , 2 days ago
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RE: Electricity price predictions
@old_scientist We are a low mileage home, so bulk of ou...
By ChandyKris , 3 days ago
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RE: What is the main ‘dictator’ of Agile’s unit price?
@toodles I keep an eye on wholesale prices and energy m...
By ChandyKris , 3 days ago
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RE: Upgrading my system, how far do I go?
For comparison, my PW3 with 11.04kW inverter, will char...
By Old_Scientist , 3 days ago
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RE: Changes to Tesla Powerwall Charging Regime?
Elon gate - legendary! I take my hat off to you @toodle...
By Old_Scientist , 3 days ago
