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Last seen: Aug 25, 2026
One of the many reasons I think that MCS should be taken entirely out of the regulatory loop. That which needs to be regulated should be regulated th...
@fazel @bontwoody Anyone who said central heating system design is easy lied, particularly in a retrofit situation where one of many often competing...
Like most on here I'm not a heatpump engineer either. My background is in physics and engineering with a recent diversion into local government. So ...
If sizing for 35C leads to rads of a tolerable size then in principle i agree ( although you can do both) However I'm not chasing what you suggest, i...
That's interesting data provided that a) in doing your calculations you adjusted the lwt in the case of a cycling pump so that the average power...
Unfortunately you are wrong assuming the objective is to heat the house to a given temperature. If the heating is on/off, whether controlled by the h...
Yes but at the expense of running at a higher flow temperature (and thus lower efficiency) than is necessary to achieve the power output required from...
Equally some achieve greater output than their name plate rating. Choice of model should be based on the capacity table and design min OAT, not an ar...
Good point! [/quote] True, but surely its alright to go without, or just use the immersion, on the handful of days during the year when the OAT is...
Looks like these guys are onto it, albeit for energy efficiency not system sizing.
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...
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Degrees of Separation
Latest Posts
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
By Mars , 10 hours ago
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@kilgorexv, I actually think doing your own calculation...
By Mars , 10 hours 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 , 1 day 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 , 2 days ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Swings and Roundabouts, you win some…. ...
By Toodles , 2 days ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 2 days ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 2 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
There is scope for product development here. I for one...
By JamesPa , 2 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 , 3 days ago
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RE: The good, the bad and the not that great – my heat pump installation
@burtis, I’ve followed this thread pretty much from the...
By Mars , 5 days ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
First time poster here but I can share my experience as...
By SCH , 6 days ago
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RE: Is it the house or the equipment?
...which, I've found out, is pretty much impossible to ...
By Majordennisbloodnok , 6 days ago
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