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Last seen: Nov 3, 2025
@ken the issue isn't a switch, the issue is that a battery/inverter has a peak output; for example my current setup is only 3.2kw (48v x 75amps). So y...
@editor how much battery storage are you planning? You're going to need a lot of batteries and a lot of capacity to actually use them to power an ASHP...
@jeff if its the middle of winter you are going to burn through your batteries in a couple of hours (if its for your ASHP) - IF they are fully charged...
@atommyk got pretty close yesterday to not using peak power Take off 3kw from anything "to grid" which gets dumped into my hot water tank via a So...
@editor I wouldn't get too bogged down in things personally. The fact is we don't really get power cuts in this country and if you were to get a reall...
@editor you need an off-grid setup with grid capabilities e.g. a secondary power source i.e. the grid or a generator. That should work. The issue is g...
@atommyk once the heat pump was installed that was always our plan. Saved us a tonne of cash so far - hence the thinking on bigger and more batteries....
@alex you get get EPS switches, but you'll need a new consumer board with that EPS attached to it so the specific loads can be isolated. It's simple e...
What's the split on batteries and solar? I'm looking at buying in some batteries for $240/kWh from China. Just check your inverter can work with multi...
@atommyk don't get me wrong, we are well down now on power use. Our batteries are full and much of the excess PV is heating our hot water at the momen...
@atommyk now we have the ASHP it's going to be a little different as that chews power. However it's good that we are basically free on the bulk of our...
@cathoderay they put a low loss header in my system. Next time we have a plumber in, I'll be having it removed. It's not needed and it's a cause of he...
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Degrees of Separation
Latest Posts
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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 , 7 hours ago
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RE: To re-pipe or not to re-pipe? Moving from oil boiler to air source heat pump.
Sooooo, what did we do in the end? We approached three ...
By Penval , 7 hours ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
D'oh - of course. I shouldn't post before my brain is f...
By Old_Scientist , 13 hours 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 , 14 hours 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 , 15 hours ago
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RE: Cooling with air to water heat pumps
Passive cooling should always be the first call. Keep ...
By JamesPa , 16 hours 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 , 1 day ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 1 day 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 , 2 days ago
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RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
By JamesPa , 3 days ago
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RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 3 days ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 4 days ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 4 days ago
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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 4 days ago



