Last seen: Apr 3, 2025
@Jancold Your kitchen would not have been cold, 18 degrees C is the temperature kitchens should be designed to because there are significant amounts...
@jamespa I agree wholehatedly.
@jamespa I agree with nearly everything you have said. However, today heating systems are critically undercharged for if you take inflation in to acco...
@johnmo It appears you do not value expertise or experience. Do you put your own fillings in your teeth? I think not, you pay an exorbitant rate for a...
All 3 drawings are hydraulically separated and are all buffer tanks. The third does not show a pump in the heat pump, which there has to be one, or wa...
@ecobaker Your system volume will be fine, just make sure you get the right flow rate with all TRV's open and at least 8 l/min with all closed. Leavin...
Hi It does not matter which side the pump is on, it is a circuit. You must however make sure that you have enough open zone system volume and flow. ...
@derek-m So would we all, but beggars cannot be choosers 😀
@lucia In my view, the Daiken is a better unit as it controls the Delta T of the heating water (The Vaillant does not ), and the controller is very mu...
@derek-m Daiken capacity charts
@jamespa If flow temperature was the only variable, you may have a point, however, there are tens if not many hundreds of variables that need to be ta...
I will give you a clue and only 1 of many reasons, for every 1 Degree you move the flow temperature up from source (outside temperature), you add betw...
Latest Posts
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just trying to roughly get an idea what price an instal...
By AdamK , 4 hours ago
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RE: Help with understanding my Mitsubishi Ecodan air source heat pump
Welcome to the forum@patch and well done for your under...
By Judith , 8 hours ago
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RE: Air Source Heat Pump - Side Alley Suitability
@jamespa I used an assumed indoor temperature of 18C. I...
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RE: ASHP Ecodan L9 error - No Heating but Hot Water
That’s interesting, but obviously concerning also…. Do ...
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RE: In the middle of an ASHP installation - a few questions (and issues)
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@editor Attached images of external insulation. Think...
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RE: Hitachi Yutaki SCombi Heat Pump - Thermal Off's
@trebor12345 The Auto function is supposed to adapt au...
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RE: The Great British Heat Pump Quiz
@allyfish thanks for the feedback and glad it was fun! ...
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RE: help sizing rads based on room by room heat loss
If its 1988W at DT 50, which is how most radiators are ...
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RE: Career change – entering the world of heating and heat pumps
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@editor thanks Mars, it's a rare occasion I'm looking f...
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RE: Efficiency Concerns on newly installed Mitsubishi Ecodan 8.5kW
@ashp-bobba and @jamespa - thank you both for all your ...
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Win one of five "Heat Pumps 101" Courses
Heat pumps are gaining traction in the UK, but between ...
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RE: Agile: average import cost vs other tariffs?
@toodles thanks for the analysis. I'll be really intere...
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RE: Is this normal? Click of the DHW returning to space heating
@grantmethestrength Oh sorry to hear that, there should...
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@ashp-bobba TBH the ladies are rather disorganised, so ...
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RE: Solar Power Output – Let’s Compare Generation Figures
And for those of us without an automatic irrigation sys...
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Logically, the lower frequency = more gentle, yes, but ...
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