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Last seen: Jan 6, 2026
OK, I calculate a flow of about 1.9m3/hr in the secondary circuit. This is the Grundfos web page for the pump data: You said CC3, that gives a ...
Hello. OK, I've plotted your PEX data in the attached spreadsheet. The data shows your PEX is pinched between Prim_in and Sec_Out. That means the ...
Hello, A quick reply, I need to go out but will be back later. You said the plate exchanger was installed non-countercurrent. Please can you post a...
@cathoderay thanks for sharing that data. There's not much numerical analysis I can do with it because I need to know 1 flow. Please let me talk (t...
Ahhhh.... When your system is operating at it's equilibrium point the energy from the heat pump is released into the room by the radiators, but ther...
Right, this carries on from this post (Hopefully I got that right). How can I sanity check the amount of ice accumulating in an 8kW ASHP? I th...
@cathoderay, darn it. I missed your comment about room temperature. I've also worked out your primary system volume, 20L. That's small. You have ...
@transparent Thank you for that suggestion. I had seen that type of unit. They fall under the F-Gas regulations in the UK, because there's a refrige...
@cathoderay thank you for the data. It includes information on the fan speed, that's helpful! The data show's your room temperature is 25C and never...
@cathoderay thank you for sharing the most resent set of data, I'll work through that. Are you able to create a table of numerical data, or can you o...
Evening all, An air to air heat pump system might be a possible solution, but I'm not F-Gas registered so couldn't install one. I'd like to keep co...
@transparent Hello. This will not be covered on any grant scheme, I'll be paying the full cost from own pocket 😉 The garage / workshop is a stand a...
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RE: Anyone concerned about GivEnergy?
An incredibly enlightening piece on the subject by @maj...
By Mars , 3 hours ago
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Home automation and the cloud; is there a better way?
You’ve just had a brand new system installed (heat pump...
By Majordennisbloodnok , 3 hours ago
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RE: End-of-Life Heat Pumps: How Do You Dispose of an ASHP in the UK?
We've started to document everything, and part 2 of the...
By Mars , 3 hours ago
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RE: Summer usage. Why is my Vaillant Aerotherm using so much energy on "heating"?
So the red bars are 'DHW' and the yellow bars 'heating'...
By JamesPa , 4 hours ago
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Its good kit the Midea and significantly cheaper, you w...
By ASHP-BOBBA , 8 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
Have you tried cutting the grid feed to see what actual...
By JamesPa , 8 hours ago
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Contractors pack for inta antifreeze valves are around ...
By ASHP-BOBBA , 8 hours ago
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RE: Renewables & Heat Pumps in the News
Critics and naysayers will be negative whatever the gov...
By JamesPa , 8 hours ago
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RE: Microbore heat pump installs
In principle you are almost certainly right, but in pra...
By JamesPa , 18 hours ago
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RE: Electricity price predictions
@old_scientist We are a low mileage home, so bulk of ou...
By ChandyKris , 19 hours ago
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There are just too many unknowns for me to comment on p...
By Transparent , 21 hours ago
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RE: What is the main ‘dictator’ of Agile’s unit price?
@toodles I keep an eye on wholesale prices and energy m...
By ChandyKris , 22 hours ago
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RE: Brand and installer questions for ASHP
Strange, perhaps it doesnt use modbus which the third p...
By JamesPa , 24 hours ago
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RE: Upgrading my system, how far do I go?
For comparison, my PW3 with 11.04kW inverter, will char...
By Old_Scientist , 1 day ago
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RE: Changes to Tesla Powerwall Charging Regime?
Elon gate - legendary! I take my hat off to you @toodle...
By Old_Scientist , 1 day ago
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RE: Mitsubishi Ecodan not good enough ?
Thanks @goody, appreciate the feedback and sorry you ha...
By marcexec , 2 days ago
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RE: Minimum and Zero Disrupt Heat Pump Installations
True (first sentence) Thats the reason to consider th...
By JamesPa , 2 days ago
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RE: High air source heat pump running costs – Vaillant AroTherm Plus
Quite right. I was using a rough guesstimate of doublin...
By Majordennisbloodnok , 2 days ago
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RE: My Grant R290 9kW Heat Pump Installation
Again, really don't know how accurate this is! &nb...
By petch , 3 days ago
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RE: MCS Quality Audit – Has Anyone Had One? Did It Lead to Remediation?
@toodles The whole scheme is a shocking waste of money....
By Papahuhu , 3 days ago
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RE: DIY or Don’t Touch? Solarman Smart Meter Install
Yes, and these guys would probably be my preferred inst...
By Batpred , 3 days ago
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RE: Hot water tank lose heat rapidly on random days
@jamespa Hopefully their reasons are well intended! ...
By Bash , 3 days ago
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RE: Ecoflow UK Support & Info Thread
As mentioned above, we’ve got our full review of the Ec...
By Mars , 3 days ago
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RE: Say hello and introduce yourself
@sonosppp welcome to the forums. I see you've posted in...
By Mars , 4 days ago

