Last seen: Sep 17, 2025
In most cases you are correct, they reduce efficiency. However fitters think they reduce call outs and in some circumstances they are correct. From ...
I understand the risk, but unless you compel all heat pumps to be 16kW plus, the possibility of undersizing to save capital cost is always present. T...
SCOP at 35 is quoted as 3.98, but from posts here and elsewhere I have the impression that Octopus are targeting conventional retrofits, so 35 may be ...
Yes but...Octopus are an energy company so are in a position to manipulate price if it makes other technology choices easier. And anyway the SCOP of ...
@technogeek I have a couple of comments/questions Buffers can a) increase the engaged system volume, which may reduce cycling time (because...
Fair enough. There is an exception to every rule of course (I said 'in general terms'), which is why heat pump systems (and central heating in genera...
My understanding is that it uses the WC settings as a starting point. Exactly what it does from there and whether it 'times out' any measured modific...
er dont you just need a smart meter which I think your energy supplier can arrange to have fitted within 14-28 days. That's all I have, and I can bo...
Turning the room stat (and all or most TRVs) up to (say) 2C above the desired temperature, and adjusting the flow temperature (via the WC curve) to th...
@iantelescope since you address me directly I will reply directly. I'm not sure what you think I don't understand, nor what you think we don't agree ...
Fair enough. Perhaps both @derek-m and I should have said 'I would suggest that you don't get too hung up on flow rate, provided of course its not so...
Latest Posts
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RE: Powerwall 3 or Myenergi or something else?
Many of those tariffs are simple time of use tariffs, w...
By Temperature_Gradient , 36 minutes ago
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RE: Help me keep the faith with my air source heat pump installation
Yes thats the whole point of the flexis as regards tran...
By JamesPa , 49 minutes ago
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So far as I can tell designing for DT5, which is 'the n...
By JamesPa , 1 hour ago
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Mitsu PAR-WT60R Wireless Controller - options
I hope I have satisfactorily installed the above wirele...
By DavidAlgarve , 3 hours ago
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WC curve best discovered by experiment anyway as any lo...
By JamesPa , 8 hours ago
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RE: Big Changes Coming to Our Heat Pump System
@editor your engineer's attitude is truly horrifying. ...
By GrahamF , 1 day ago
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RE: How to choose Towel Rails for an ASHP
@rob-nezard yes absolutely. Here is the link and a pho...
By GrahamF , 1 day ago
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@mixergy Thanks for the update, I would appreciate some...
By bontwoody , 1 day ago
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RE: Is Your Broadband Router the Weak Link in Your High-Tech Home?
Unfortunately I'm not that well connected 😂 ...
By Scalextrix , 1 day ago
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
It is interesting to see what our new Grant Aerona 290 ...
By GrahamF , 1 day ago
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RE: Testing new controls/monitoring for Midea Clone ASHP
I've never physically seen it, but I seem to recall som...
By cathodeRay , 1 day ago
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RE: Midea ASHP – how to set weather compensation
I noticed that too and thought the same thing, but then...
By cathodeRay , 2 days ago
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RE: Ya can’t win! It is S*d’s Law!
@old_scientist If IOF is still running next late spring...
By Toodles , 2 days ago
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RE: Electricity price predictions
Those of you on Agile will do well tomorrow; there are ...
By Toodles , 2 days ago
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RE: Who’s Caved and Switched the Heating On Already?
We've been running our Ecodan system, installed in June...
By Sheriff Fatman , 2 days ago
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Ok. Two schools of thought. The first is to run the ...
By JamesPa , 3 days ago
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@drei Willing as I am to help, I don't think I'm yet ...
By JamesPa , 3 days ago
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Selling 5 year old ASHP & Gas Combi Boiler - £590
Selling a 5-year-old Daikin Altherma Hybrid Air Source ...
By Paul G , 3 days ago
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RE: Is a Valliant Inline 6kW heater a BUS buster?
Much of that is true in principle, but its not likely t...
By JamesPa , 5 days ago
