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Last seen: May 26, 2026
To conclude this story, I hadn't realised that immersion thermostats are a separate replaceable item to the immersion heater itself. I ordered a Coth...
The Aerona 290 is from a different (Chinese) OEM, compared with the Japanese (Chofu) R32 Aerona3. I don't have experience with the R290, or the smart...
Well, if that's the right PDF the factory set is supposed to be 75 so in theory it should go up at least that far when cranked up to the max. A bit po...
I suppose it could be that 57C is the maximum achievable temperature by the immersion heater, but I thought the point of the adjustment is you could s...
I think we're talking at cross purposes here. The above test is with the ASHP completely turned off. The setup is mains -> power meter -> contac...
Here is the full setup (I really should tidy that wiring...): Disconnected tank stat at the top pocket, thermistor going to the ASHP in the middle...
Also to add, on the original Grant wiring there was a separate tank stat which is in the pocket at the top of the cylinder. I have disconnected this a...
Hmm. When they say the pipes are in the walls, is this all the 22mm of PEX you showed upthread? Do you know where they all go? Roughly how long is the...
@heymikey OK, so that rules out a number of things. I would lean towards thinking you do actually have a flow restriction of some kind. If it's not ai...
Hello @heymikey, I'm not Cally and I haven't read the whole of this thread, but I did have noise problems with my Grant before I rewired it. So just...
Hmm, I need to have a crawl around and check the radiator piping but I think it's all one 22mm backbone with 15mm drops - a couple of drops serve two ...
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Degrees of Separation
Latest Posts
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RE: Glass lined Cylinder for private water supply
This has turned into a fascinating little rabbit hole. ...
By Mars , 6 hours ago
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RE: Adventures in heat loss calculations
yes and no. apparently HG’s AI was automatically assumi...
By Batpred , 6 hours ago
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RE: Switch suitable to change between two inverter CT's
Last winter my battery ,32KWh, could run the house com...
By Jancold , 7 hours ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@rob-of-york Thank you for that, whilst familiar with t...
By kilgorexv , 7 hours ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Agree with Major. And even if I was very happy with ...
By Batpred , 8 hours ago
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RE: Is the "divide by 2900" rule still valid?
There is another estimator that you could use, a formul...
By Rob of York , 11 hours ago
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RE: To re-pipe or not to re-pipe? Moving from oil boiler to air source heat pump.
@penval, really useful update. After all the discussion...
By Mars , 3 days ago
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RE: Who's your electricity provider and what's your tariff?
@papahuhu I prefer to look at it simplistically. We d...
By Old_Scientist , 3 days ago
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RE: Questions about A2A for heating as well as cooling
@rob-of-york I would concur with the underfloor insulat...
By Toodles , 4 days ago
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RE: New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless
Nothing attached! I have rads but UFH makes the case ...
By JamesPa , 4 days ago
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RE: Cooling with air to water heat pumps
Passive cooling should always be the first call. Keep ...
By JamesPa , 4 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
@rob-of-york Thank you, I’m thinking along these same l...
By Toodles , 5 days ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 5 days ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
By Mars , 5 days ago
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