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Last seen: Oct 21, 2026
Probably not a lot unless you have UFH, although there is a risk of condensation on the pipes When ASHPs are used for cooling one problem that occur...
That seems reasonable if you have a good sized buffer tank between primary and secondary. but not if you have a plate heat exchanger or low loss heade...
I suspect the experience differs a lot from heat pump to heat pump and house to house. When my 7kW Vaillant (no buffer tank or volumiser) defrosts th...
As you say you have to make assumptions about boiler efficiency, probably best based on boiler age and whether it actually condenses or not. Cooking...
That sounds quite high, but of course I dont know much about your house or how much DHW you use. My total January electricity consumption (minus 1 d...
@bobtskutter Thats about how I understand it. To simplify it down, as well as a loss from conduction (to the outside air) and ventilation, the vario...
I dont think so. Essentially with TRVs, smart or otherwise, bits of the the system are likely to be shutting down or opening up to control the room t...
Heat loss (and therefore the energy you need to supply) is proportional to (house temp - OAT). Note that the house continues to lose heat even if the...
Sorry for not explaining the graph. Each point represents one day. The horizontal axis is the degree-days figure for the day (degree-days is a sligh...
If the halo has an inbuilt temp sensor (which I imagine it does, but check) then you can leave the control unit in the loft. The latter, or e...
By 'flow' I presume you mean FSV parameter 2021. I am assuming you have left 2011 constant (at what value) As I mentioned earlier, consumption over...
I haven't used named ranges either more than a couple of times previously, but I found following the formulae with eg d23^d22*d2/2 difficult to follow...
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There has been a flurry of activity surrounding NESO ov...
By Transparent , 2 hours ago
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RE: How quickly would you want/expect heat recovery to take from setback?
Much longer than that here. The heating isn't even on. ...
By bobflux , 4 hours ago
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RE: Passiv Smart Thermostat - Help & Forum Support
Obviously the weather is changeable but there's a defin...
By Singlespeed , 4 hours ago
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RE: Double or Triple Glazed Windows?
It is very comforting to see the condensation on the ou...
By Toodles , 4 hours ago
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RE: The Changing Jet Stream Could Challenge UK Air Source Heat Pumps
@rob-of-york I must admit that when we had a Daikin hea...
By Toodles , 5 hours ago
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RE: Forum updates, announcements & issues
Get the Renewable Heating Hub heads-up on WhatsApp. I...
By Mars , 6 hours ago
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RE: Safety study for plug in batteries out to tender - looks like Q3 2027 at best before legal
@editor I pointed out to the one of the Fuse execs that...
By dansus , 6 hours ago
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RE: 15kw pump for 225m2 1990's house - over kill?
@seaviews As well as loft insulation, there are othe...
By Rob of York , 7 hours ago
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RE: How much of your renewable and home setup would still work if the internet went down?
On the money, @editor. Until manufacturers stop actin...
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RE: Indevolt Batteries UK Support & Info Thread
Google Cloud outage: Let's not jump to the conclus...
By Transparent , 9 hours ago
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RE: BT cuts you off, Plusnet blames Openreach... welcome to “seamless” broadband switching
Both of which (in most cases) use Openreach for the las...
By JamesPa , 9 hours ago
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RE: Renewables & Heat Pumps in the News
Yes, this is a swiss and german standard I believe, Vai...
By Batpred , 24 hours ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!
@editor FWIW my problem was resolved, eventually, after...
By BigFish , 1 day ago
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My heating has been off and DHW on throughout the summe...
By DavidAlgarve , 1 day ago
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RE: Anyone concerned about GivEnergy?
The GivE forum seemed to have survived the collapse of ...
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