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Last seen: Oct 1, 2025
@robs The flow rate is determined by the capacity of the unit. If you close a valve in the flow, the pump speeds up to try to match the desired fixed ...
@heatgeek 👍
@heatgeek No offense taken or inferred. The problem is, no-one actually knows but many claim to, and are disseminating unverified information as fact....
@heatgeek You state "Beware disinformation on this forum", then you state "The theoretical power level was calculated " and finally "Vaillant Arotherm...
@jamespa There is no consensus as manufacturers will not supply their test data, however, it is very much based on the design of the refrigerant circu...
@jamespa, please do not make assumptions when you admit that you do not understand the topic. There are reasons for the 5 Deg Delta T but they are exc...
@sunandair a red herring, cycling is not the problen some make it out to be.
@sunandair That is what I would expect from a system with adiquate volume. The panasonic prevents the flow temperature dropping below 25 Deg C which i...
@sunandair You are correct, the volumisor on the flow will buffer the cold shock comming from the heat pump going to the radiators and the asociated d...
@robl Your analysis is correct, for heating the most efficient Delta T across the condensor is in fact 5 Deg C and most manufacturers will reccomend t...
@jamespa Install one of these on the main incommer.
@adamk Yes you can to that. I never use old radiators. If the customer insiste, I walk away, it is not worth it.
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
One more quick one. A local installer I contacted has j...
By springswood , 24 minutes ago
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RE: Estimating true heat loss from twelve months of consumption data
Hi @ian33a you could do your own heat loss calculation ...
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RE: Anyone concerned about GivEnergy?
@sunnyskies I agree with Downfield trying to ask the GE...
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RE: Setback savings - fact or fiction?
@jamespa — this version may be marginally better: &nb...
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RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
All going according to plan, mid July we get that 7kW a...
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Current metrics - DHW target set to 47c
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RE: DIY or Don’t Touch? Solarman Smart Meter Install
That was my understanding also.
By JamesPa , 23 hours ago
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RE: Grant Aeona 3 R32 cycling with weather compensation.
That would be abnormal but I cant see from your charts ...
By JamesPa , 23 hours ago
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RE: Vaillant Sensocomfort Time
Oh I remember this from when I set mine up 2 years ago,...
By JamesPa , 1 day ago
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Heat geek have already stated that the pro is in fact c...
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RE: The Myth of the MCS Performance Guarantee
@editor I know. As if MCS wasn't bad enough, it's now e...
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