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Last seen: Sep 11, 2026
@editor guess the reason im asking is cause ive looked at the break down on heat geeks quote system and then stripped out what ive already done and im...
just trying to roughly get an idea what price an install should be if the following has already been done. 1) upgraded some 15mm copper runs to 22mm...
@jamespa so if i have a 1988w rad at 40c @-3.1 it will only be 509w?
@jamespa heat loss list on first post. it’s the one that says nearly 2kw, I’ve just split it into 2 rooms as we’re going to put a sliding wall betwe...
@jamespa thanks for the info but I think I must have something wrong. The heat loss for the whole house is about 7.5kw. The room is only 3.756m x 3.68...
can i ask then if i have a heat loss for a room of 1079w and a flow of 40c@-3.1c what wattage rad do i need to hit? cause at the moment im struggling ...
@jamespa what I didn’t want to do was oversize too much then end up having the HP cycling. What I have noticed is most companies I’ve contacted want t...
@jamespa I’ve had a few done most come out around 7kw so that’s probably about right, but the loss per room I’ve only got one and it’s been corrected ...
@jamespa I’m planning to try for 40c as that’s what my old installer was going to do. I will measure the rads and see where I need to upgrade. One of ...
tf heating and plumbing Visited today. They are suggesting a 2 port buffer/volumiser. Also said the rads would needs to be upgraded if needed otherwis...
the training is not happening at any pace. they have a whole room with HP's of different brands in at my local college but no one to teach it, the gas...
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RE: Who's your electricity provider and what's your tariff?
Just a friendly reminder, everyone, about the forum rul...
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
My first reaction is that these are prima facie much of...
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RE: Is it the house or the equipment?
Thanks for that @rob-of-york. The two way split I descr...
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RE: Next steps on my ASHP journey: Radiators and Pipework
If it's a separate contract then it would not be zero r...
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RE: Siting of the external sensor on a heatpump
Of course had the heat source been a heat pump it would...
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Never assume, it makes an ass of u and me! OK, tha...
By JamesPa , 17 hours 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...
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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...
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No, but the heat pump must be capable of delivering a S...
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RE: Daikin ESPAltherma and Home Assistant installation
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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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RE: Vaillant Arotherm Plus 7KW need a service on it
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RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 3 days ago
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RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 4 days ago



