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Last seen: Aug 27, 2026
With the mention of control by PLC, I know many Programmable Logic Controllers (PLCs) have a backup battery installed, but whether this spe...
@jamespa the rccb shown in your photo is a type AC. If you are looking for a device that works with EV chargers or solar PV (which requires bi-dir...
@sunandair I think you will also need to take account of the energy lost through Latent heat of fusion e.g. To turn 1 kg of ice at 0°C into water at ...
@transparent the eFiXX team posted s youtube video earlier this year on this subject. "We set out to do what no one should: try to destroy a lithium ...
@batpred my understanding is the current limit for hydrogen within the natural gas network in GB is 0.1% by volume, as set out under the Gas Safety (M...
@batpred This is part of the aims of the regulation (5) This Regulation aims to facilitate the penetration of renewable gas and low-...
@jeff You seem to have a grasp of all things regulatory, so what's you view....should we be keeping an eye on what our European neighbours are doing a...
@trebor12345 Yes, expect defrost cycles to initiate at evaporator temperatures between -20 and -35 degC depending on refrigerant gas, plant design and...
For an air-source heat pump the minimum evaporating temperature depends on the compressor design and the manufacturer’s operating envelope. Typical...
@crimson This youtube might be of help The narrator's voice sounds kind of familiar 😂
You might want to consider the following common faults: Air in the System/Pipes (Air lock): This is the most common problem. Trapped air prevents wa...
@paultheheating How do you currently recoup the oil cost from the tenant and who pays the electricity bills? My understanding is the BUS grant is du...
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Degrees of Separation
Latest Posts
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
Thanks for sharing that. Your objective seems very sen...
By JamesPa , 2 hours ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@toodles Very nice. Ours was the opposite, about 10%...
By Papahuhu , 3 hours ago
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RE: Adding additional Solar Panels to a DC coupled battery system
A couple more points about placing solar panels at low ...
By Transparent , 4 hours ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@kilgorexv definitely a larger inverter will help and m...
By AndrewJ , 1 day ago
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 1 day ago
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RE: Surface mount or bury primaries for heat pump installation?
The installation is almost done! I've written up two ...
By tomasmcguinness , 2 days ago
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RE: Glass lined Cylinder for private water supply
This has turned into a fascinating little rabbit hole. ...
By Mars , 2 days 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 , 2 days 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 , 2 days 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 , 2 days 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 , 4 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 , 5 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 , 6 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 , 6 days ago
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