Last seen: Jun 28, 2025
@toodles All those factors might result in a lot more heat being required, it can still be delivered in a very efficient way. Lack of efficiency seems...
I think @technogeek is looking at a Vaillant which does, I believe, present a figure for the 'free' heat generated by the pump, so the 'paid-for' inpu...
If you really were getting a COP of 6 in Feb using WC mode then I'd be wondering if there is any benefit to changing to AA mode if it proves to be les...
Heat loss surveys are always going to be guesswork – even more so when you don't have evaluated materials and construction methods. Heat loss via air ...
@sunandair The Ecodans just do not have a meter-grade electricity monitoring capacity. There is an over-estimation of the daily consumption that is...
I think this notion of an 'optimal' install is something of a chimera. Every installation is different, and the majority of forum users have experienc...
The last picture is the flow meter, the other two are of the tank thermistor in its pocket. The flow and return thermistors should be on the main pipe...
I would look first at the placement of the thermistor measuring the flow temperature. I am going to assume you have an Ecodan cyclinder too, in which ...
Your house loses heat 24hrs a day – if you heat the house for only some of those hours then you have to replace the lost heat as well, which if you ha...
The surplus consumption appears even when the heating is off over the summer, sometimes weirdly high, ie 3kWh - and though there is proportional relat...
@davidalgarve My surplus power 'consumed' last year was around 630kWh, so around 1.75kWh every day. Some fairly random variation either side of this...
@jaket I think the flat bottom to the return temp shows how the slab temperature is preventing anymore heat being dropped from the circulation in t...
Latest Posts
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As I have reported elsewhere we turned on the cooling o...
By downfield , 3 hours ago
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RE: Adding battery storage to SolarEdge PV system
Sadly I fear that they may well be right to do so. ...
By JamesPa , 5 hours ago
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RE: Commencing on an ASHP Installation Process
Anitfreeze valves, or at least the ends of antifreeze v...
By JamesPa , 7 hours ago
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@hughf, I think we’ll organise an RHH session at Instal...
By Mars , 21 hours ago
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@el3b Hi, sorry to hear that, it is advisable to instal...
By ASHP-BOBBA , 23 hours ago
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RE: Difficult positioning of air source heat pump
@rikiarn Out of intrigue, the thread reads as though Ai...
By Sheriff Fatman , 1 day ago
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RE: Mitsubishi Ecodan Fails to Heat Water despite temperature drop
@m1kegibson If you are able to access the service me...
By HarriUp , 1 day ago
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RE: When will heat pumps and install prices come down?
... which of course is impossible because the world mov...
By JamesPa , 1 day ago
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RE: Surface mount or bury primaries for heat pump installation?
What you run the cable through will affect its current ...
By Transparent , 2 days ago
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My advice is reject unless they will delete the buffer ...
By JamesPa , 2 days ago
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RE: Battery storage to run Heat Pump.
I would be surprised if the battery chemistry is going ...
By Transparent , 2 days ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
@dowallydrifter OK. I would recommend you read t...
By JamesPa , 3 days ago
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RE: Solar to power Heat Pump for DHW
Wow, how big is your heat pump that it is pulling 6kW d...
By Old_Scientist , 3 days ago
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There are DHW tanks with a built in heat pump that take...
By JamesPa , 4 days ago
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RE: Vaillant AroTherm Plus 7kW
If the thermostat is connected to the call for heat ter...
By JamesPa , 4 days ago
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RE: Renewables & Heat Pumps in the News
Yes I realise I'm picking this up a week late...... but...
By Transparent , 5 days ago
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RE: Getting the best out of a heat pump - is Homely a possible answer?
@cathoderay how did you get a script to run for that- d...
By benson , 6 days ago
