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Last seen: Sep 19, 2024
During this cold weather I suspect the cycling will invariably be due to the heat pump defrosting. This is perfectly normal, and whilst undesirable, i...
Setting the WC curve at 50C LWT @ 0C OAT, could produce the same slope as 55C LWT @ -5C OAT, the difference being that in the first instance the LWT w...
The WC curve needs to match the heat loss of your home, so if you find that your home is not achieving the desired temperature with the curve set at s...
All forms of heating systems are going to have to work harder and use more energy when the weather is cold. Because heat pumps get most of there ene...
To help with your understanding. The LWT dictates how much thermal energy it will be possible for the heat emitters to emit. If your radiators or UF...
Theory would suggest fewer defrost cycles at OAT's below -3C. Where do you live and do you suffer high humidity levels?
I would suspect that it would be very difficult if not impossible to fully explain the difference without looking closely at the underlying raw data, ...
I don't disagree with what you are saying, but when I talk about large scale energy storage, I am thinking more along the lines of GWh size systems, w...
You are in the fortunate position of having an Ecodan and a well insulated home. Looking at the manufacturer's data tables, a 14kW Ecodan should sti...
Thank you Dunlorn, you appear to have answered the question I was going to pose to forum members. "Does the defrost frequency reduce at OAT's below -3...
There appears to be some confusion. My post was a reply to the question set by Andehh, who appears to experiencing spikes in temperature as shown in t...
The problems you are experiencing are because you have an on - off type room thermostat controlling how the heat pump operates. If you wish to have th...
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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 , 1 hour 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 , 11 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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