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Last seen: May 26, 2026
Some fair points... I've been doing some investigations. The system is balanced, in the sense of delivering heat evenly without cold spots. However ...
Good spot, I'd missed that 'short circuit' path. Here's another go: If no V1/V2/V3 are powered (all NC position) then we're in classic buffer hea...
Agreed, you get loss of optimality - but it continues to work, rather than just breaking. That's what I'm trying to do: design and insulate it ri...
I wondered about that. Wouldn't that potentially cause issues with flow rates? I have no idea what the flow through the radiators is, and I thought th...
I haven't bought the Aerona Smart Controller (£700!) but my guess what they mean with 'retrofit' is basically undoing all the weird external switching...
For the record, Grant supply ethylene glycol for their heat pumps: Grant Inhib03 Heat Pump Fluid (Heat Pump Concentrate) - MSDS: So if it's a Gran...
There shouldn’t be a problem using an inverter rated higher than your panel output. Maybe there will be a small efficiency loss at the low end (grey d...
One thing I fixed was my dozy installer had screwed the copper pipes from the ASHP to the loft joists with regular brass pipe clips. (Flexi tails outs...
@jimbo69 As a follow up to my post above, I solved the other cause of my noise. The installer fitted my system with a Honeywell Lyriq on-off controlle...
It is possible to install a thermistor (10K, beta=3435, 1%) in the DHW cylinder so the tank temperature can be read by the ASHP. However this doesn'...
API keys are like passwords, but used by computers. They allow access to private resources and data like passwords do, although API keys are often sho...
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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 , 7 hours ago
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RE: Adventures in heat loss calculations
yes and no. apparently HG’s AI was automatically assumi...
By Batpred , 7 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 , 8 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 , 8 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 , 12 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 , 4 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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