Last seen: Jun 18, 2025
A big 'hmmm' from me. 
The elephant in the sitting room is not the efficiency and rated performance of heat pumps when tested to BS EN 14511 or BS...
Just be mindful of installation restrictions on newer A3 class R290 refrigerant (Propane) ASHP monobloc units. There are rules to follow concerning lo...
Good update 
Cosy 6 aka 'The Maddy D's Bin' has a inclined fan outlet, but the fan outlet is not a freezing risk anyway, that risk is only from cond...
South facing rooms with large windows can experience high solar gain. Is this the case? Solar gain is one factor that external weather compensated con...
Hi @rikiarn, welcome here! Difficult one. A picture says 1000 words. There's some things jump out: The proximity of the neighbouring property. Posit...
Around 5.5degK at design output. Narrows to about 2.4degK on WC low load. Constant flow system so variable deltaT.
Damage is cosmetic is appears, but the result of poor handling, so there could be inner damage unseen. Send it back. I've noticed an increasing trend ...
The wife (ouch...)
@editor I see. I knew there would be sound reasons. My ASHP is barely big enough, and I've seen aveage room temperatures drop a couple of degrees over...
Thanks @Mars. A 'boiler' you say, this is blasphemy!
Hi @editor, has the valve failed or the motorised actuator?
Hi @crimson, I think field 2 is compressor discharge temperature, field 0 is return water temp, 9 is leaving water temp. Check the Grant installation ...
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Latest Posts
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RE: Adding battery storage to SolarEdge PV system
Yes, I agree with that thinking. There's one other gr...
By Transparent , 49 minutes ago
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RE: Surface mount or bury primaries for heat pump installation?
What about those pipes that include conduits for electr...
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RE: Say hello and introduce yourself
Welcome You have already done the most important thin...
By JamesPa , 5 hours ago
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RE: Weather compensated secondary circuits with Biomass
If anyone’s going to know the answer to this it’s @sune...
By Mars , 7 hours ago
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RE: Commencing on an ASHP Installation Process
That outside pipework would concern me. Surely rigid se...
By benson , 19 hours ago
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As I have reported elsewhere we turned on the cooling o...
By downfield , 22 hours ago
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@el3b Hi, sorry to hear that, it is advisable to instal...
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RE: Difficult positioning of air source heat pump
@rikiarn Out of intrigue, the thread reads as though Ai...
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@m1kegibson If you are able to access the service me...
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