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Last seen: Aug 16, 2026
@davidalgarve Lol no problem re the name. I done some back of the fag packet calculations and if you were heating your tank from 35 to 50 C each day...
@davidalgarve is that a 12kw heat pump David? Do you know how many kWh you use to heat your tank? If so divide it by you hot water COP and see if t...
@davidalgarve No. the ashp if the most efficient way of heating your domestic hot water. Immersion heaters only have a COP of 1. The battery just give...
I have a power diverter and it’s works great but now I don’t use it. The reason why is because the tariff I’m on pays me more to export my excess t...
@johnmo @editor My self install. 5kW Samsung, Mixergy cylinder and limited radiator upgrades probably cost me about £6000 (inc plumber for pressuris...
@old_scientist that very interesting. Thanks, looks like it might be the way to go 😁
@toodles I have a similar system but a single 5kWh battery covers all my needs except in the depths of winter. The amount I would save makes it diffic...
@johnmo @toodles I was using the summer offer price but hadnt accounted for roof mounts. So really with planning, low production, maintenance and moun...
@editor @johnmo The link says it’s still not in production yet.I wonder how efficient that type of design is compared to an open blade. I’ve also seen...
@editor I was looking at this/p> if electricity prices alter significantly then that effects the payback with all the methods. Very hard to know.
@jancold To me its a no-brainer then, a max 40C flow temp should give you a very pleasing SCOP. You seem aware that a buffer tank isnt usually a good ...
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Degrees of Separation
Latest Posts
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Not a problem; that’s why I left it as it was. The pers...
By Majordennisbloodnok , 4 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 , 13 hours 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 , 1 day 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 , 2 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 , 2 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 , 2 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 , 2 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 , 2 days ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 2 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 , 3 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 , 4 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 , 4 days ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 5 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 , 5 days ago
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