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Last seen: Feb 12, 2025
Here is some actual data we can discuss (link to data): Hypothesis: does reducing the flow rate on a DHW cycle increase the dT, allowing more time f...
I have an NRG Zone and the DHW circuit is taken off one of the "zones". This "zone" has a dedicated circulation pump which I have reduce the speed on....
Lets prove it with a fairly simple test. We do a lot of talking about this stuff in this industry, yet I do not see much empirical evidence... anywher...
I have temp sensors on the flow and return of the DHW circuit. I've reduced the pump speed from 3 to 1 for todays cycle/test (roughly 23L/min to 10L/m...
This is a very valid point, one that could be modelled out quite easily
Here you go: GitHub It works for my Riello NHXM, which should be identical to the Midea M-Thermal, Clivet Edge, Bosch CS2000AWF... Please don't ju...
First of all, let me set the scene for our "average" customer who wants a HP (South Devon): HP's still costs significantly more than a direct replac...
Great point to clarify, thank you for commenting! I'm absolutely not wanting to be associated with being 3x oversized, that is just insane. We're cu...
Hi James, firstly - thank you for contributing to this discussion, it's very much appreciated and quite enjoying the challenging of the ideas/concepts...
Yes, this is what I believe to be the case. The theory has two principles. 1. Ignoring pure weather compensation, instead run the HP in its most o...
Yep, can’t disagree with that. I must admit, I was highly motivated by performance and everything else was an afterthought.
I would like to agree with you, I really would. However, the data (my HP) shows otherwise. Oversizing is not as detrimental as people are led to belie...
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Latest Posts
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RE: Who's your electricity provider and what's your tariff?
@batpred When the raw material input has increased in c...
By Papahuhu , 5 hours ago
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We kept ours and Heat Geek would have been in touch if ...
By Batpred , 10 hours ago
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RE: Missing flow temperature in Heat Geek proposal
The Heat geek contract had various get-out clauses with...
By Batpred , 12 hours ago
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RE: Why are ASHP installs so expensive?
It seems a quite comprehensive breakdown. I will try to...
By Batpred , 12 hours ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@ian-s I would encourage you to have a conversation ...
By Rob of York , 18 hours ago
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RE: Is it the house or the equipment?
Thanks @jamespa The last hard to fix draughts in the...
By springswood , 19 hours ago
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RE: Vaillant Arotherm – Using Heating
@l8again Mine is typically using 11w including the i...
By Batpred , 21 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
If you have a flowmeter and two temperature probes, the...
By bobflux , 1 day ago
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RE: Siting of the external sensor on a heatpump
@jamespa Absolutely. Even if the same mistake was mad...
By Batpred , 2 days ago
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
In fairness all heating has cost a lot to run in recent...
By JamesPa , 2 days ago
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RE: Navigating the World of Refrigerants In Heat Pumps: A Guide for Homeowners
Indeed we are invvestigating AC at present and are havi...
By Toodles , 4 days ago
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RE: Daikin ESPAltherma and Home Assistant installation
It's laziness lol The PV system is very chatty, meter...
By bobflux , 4 days ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
R (The R Project for Statistical Computing, I use it wi...
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