Last seen: Oct 1, 2025
No unit should be using it's immersion element at this ambient temperature. It is only permitted to come on after the design duty point, which should ...
@marzipan71 You may befit from replacing the valve, it will depend on the current flow rate and system design. If you have a buffer tank, it will prob...
The ground loop pump must run when the heating is on, it may be a connection problem or the board has failed. You can as a temporary measure try conne...
It is quite possible to install a high temperature heat pump, and you can run it at high temperatures if you want to double your heating bill. However...
@derek-m Correct but the best way to control flow is automatically with equipment that can do it for you. If your system does not have Delta T contro...
@soniks Firstly, the engineers at Grant need to buy a new calculator or go back to school. 50 L/min will transmit 28Kw. You only need to transmit abou...
@soniks As I said, 28 mm will be fine, a 28 mm pipe has an internal diameter of 26.2 mm, the Grant 17 Kw will produce about 14 Kw at -2 at 50 odd degr...
@soniks change 28 mm primaries--- wrong, I have 30Kw heat pumps on 28 mm primaries very successfully Buffer tank--- Wrong in any circumstance unless...
@kev-m I understand where you are coming from, but it is wishful thinking. The industry did try to do exactly what you are asking and came up with the...
@derek-m Oh I wish. Unfortunately, we follow behind a myriad of idiots that blow your assumptions out the water.
@kev-m Unfortunately you are Oh- So-Wrong. If the builders had followed the building regulations over the last 30 years, you may be right, but they ha...
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RE: Is it mad to think there should be a minimum SCOP for UK heat pump installs?
@jamespa, I don’t think that’s quite right. The regulat...
By Mars , 50 minutes ago
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RE: Are We Sleepwalking Into Another Race to the Bottom?
It is… in theory. But after some rather painful convers...
By Mars , 54 minutes ago
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@agentgeorge That’s a ittle too inscrotumable for me… T...
By Toodles , 1 hour ago
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RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus
We’re really excited to be recording a landmark Homeown...
By Mars , 2 hours ago
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RE: Testing new controls/monitoring for Midea Clone ASHP
Thx, but Sven did the hardware development. My role (as...
By Mosibi , 2 hours ago
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RE: Mitsubishi Ecodan R290 10kW performance
Are you using Havenwise for Hot Water? I have ...
By F1p , 3 hours ago
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RE: PV Panels on roof in Conservation Area
@majordennisbloodnok Fnaargh, I was thinking about try...
By colinc , 4 hours ago
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RE: Electricity price predictions
@jamespa Ah, you mean MPs that have not pro...
By Batpred , 4 hours ago
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RE: Buying large amp bidirectional RCD and RCBO
Exactly @transparent , this type of RCBOs are not easil...
By Batpred , 5 hours ago
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RE: Midea ASHP – how to set weather compensation
@pash44pump - though I realise I am a Canute, I have an...
By cathodeRay , 5 hours ago
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RE: Grant 13kW Aerona3 - issues getting zones to temp
And just when I think great they’re coming next week to...
By Crimson , 8 hours ago
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RE: Very Much Awake – Renewing the Heating Industry One Step at a Time
I feel that that attitude shared by Aadil from Heat Gee...
By Toodles , 9 hours ago
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RE: The Hidden Secret to a Successful Heat Pump: Pipe Size Matters
and we have some of the strongest tidal flows anywhere ...
By Old_Scientist , 11 hours ago
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RE: Radiator Sizing Dilemma: Vertical vs Type 33 for Low-Temperature Heat Pump Systems
This looks OK. Overall you have roughly the right amoun...
By Old_Scientist , 11 hours ago
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RE: How can I programme a setback for my Samsung Gen6 8kW heat pump?
I'm not familiar with Hive thermostats/controllers, but...
By Old_Scientist , 12 hours ago
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RE: Help me keep the faith with my air source heat pump installation
@jamespa mine seems changing albeit not by much, 3.21, ...
By AdamK , 1 day ago
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@majordennisbloodnok The migration hasn't started in th...
By HCas , 1 day ago
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RE: One room is colder than the rest of the house
@jamespa thanks for all the advice. Just so you know, ...
By AndrewJ , 1 day ago
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RE: Daikin Octopus installation update - I saw my first defrost. 😍😂
My MMI is in the loft but I checked the pump flow rate ...
By RadWhisperer , 1 day ago


