Last seen: Sep 21, 2025
If you have a smart meter and gas heating, you have in principle very accurate data on demand. It's not entirely easy to interpret, and some addition...
Thermodynamically it must be less efficient to cycle than not to cycle, because a higher flow temp is required to achieve the same output from the emi...
Generally I agree wholeheartedly with your sentiment. However excessive oversizing can lead to other problems. One of the MCS contractors who did a...
Imho the biggest problem is to determine 'right size'. The spreadsheet models, even if used correctly, make several more or less unverifiable assumpt...
I just re-read your post and noticed this which I missed first time round. The answer is a definite 'no'. The approach to 'name plate ratings' varie...
@derek-m Thanks, I look forward to 'playing'.
@bontwoody @squiff Also you must check the manufacturers capacity tables at the design OAT and FT. Some manufacturers 'name' their heat pumps very ...
I think that there are broadly two main use cases of interest namely 'in all day' and 'out all day'. Obviously this ignores more complex shift patter...
I think this is easily made intuitive by considering the limit situation, namely a building with zero thermal mass. In such a building it's obvious t...
Good question! The total used over the year will be the sum (mathematically the integral) of the instantaneous, so on this interpretation they are s...
A deceptively simple and important question but not actually that easy to calculate (for the avoidance of doubt I don't think the previous answer was ...
Science advances through a combination of theory and experiment. True also with engineering. Fitting an equation (to experimental data) is only one ...
Latest Posts
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RE: Repiping and Reconfiguring our Heat Pump System Including Removing the Buffer Tank
ok my setup is pretty simple: 7.35kw cibse heat loss ...
By AdamK , 7 hours ago
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RE: How to choose Towel Rails for an ASHP
In one en-suite bathroom we have a 180cm high towel rai...
By Judith , 8 hours ago
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RE: Testing new controls/monitoring for Midea Clone ASHP
This is actually based on the same chipset as the Svena...
By Grantmethestrength , 8 hours ago
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RE: Powerwall 3 or Myenergi or something else?
@adamk what you need is enough battery size to cover 3 ...
By Judith , 14 hours ago
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RE: Say hello and introduce yourself
@jarlatheoin do put the MVHR in early it’s not an easy ...
By Judith , 15 hours ago
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RE: How to Zone with a Single Room with UFH
We have exactly what you describe, one utility room wit...
By Judith , 15 hours ago
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RE: Who's your electricity provider and what's your tariff?
@agentgeorge Come the Ist of October, the Cosy cheapest...
By Toodles , 16 hours ago
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RE: Boxt Heat Pump Installation Experience
@ashfp Mine does have a buffer tank. That was my experi...
By Andrew J H , 1 day ago
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RE: Which temperature sensor for a Steibel buffer and Ecodan?
@ashp-bobba might be able to help as an Ecodan expert.
By Mars , 2 days ago
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RE: Help me keep the faith with my air source heat pump installation
I'm sure you are right, I was just trying to understand...
By JamesPa , 2 days ago
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RE: Preparing for 2nd winter in new build house.
Yuch! So that's basically just an on/off control. I...
By Transparent , 3 days ago
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Good day everyone. I'm new here and have a few question...
By Edin67 , 3 days ago
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RE: MCS certificate SCOP vs real-world performance
That may be contributing to lower than expected SCOP. ...
By JamesPa , 3 days ago
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RE: Mitsu PAR-WT60R Wireless Controller - options
How it does it's job is something of a mystery although...
By Abernyte , 4 days ago
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@mixergy Thanks for the update, I would appreciate some...
By bontwoody , 6 days ago
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RE: Is Your Broadband Router the Weak Link in Your High-Tech Home?
Unfortunately I'm not that well connected 😂 ...
By Scalextrix , 6 days ago
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
It is interesting to see what our new Grant Aerona 290 ...
By GrahamF , 6 days ago
