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Last seen: Aug 18, 2026
Not particularly. Middle of day gives best efficiency, middle of night less efficient but a time when you are happy to have the house cool a bit. If...
Somehow that feels like the basis of a motto/strapline. Without a doubt the combination of the nonlinear response to the main variables, the inhere...
@tinkestral-6 OK lets get back to doing some basic optimisation on your system. The good news is that you dont have a buffer or (so far as can be t...
Mostly (but not completely) I agree with @uk_pete_2000 I would say I would go with your gut and have two slots to heat DHW and go from there...
@alfapat OK, thats very helpfu. If you just record your values for the FSVs in the first picture that should be fine. Most will probably be as per...
er no picture, please post picture of tank and halo. When you turned up the WC from 0.8 to 1 did it change the temperature of the house?
Can I ask what triggered you to do this. Did it change the house temperature? (No implied criticism, just trying to find out a bit of the background...
Not much to discuss based on that, the experiment seems to match what one would expect from a bit of logic (Yay!)
My strong gut feel is that, if you bypass the pump in the secondary, turn the thermostat up to full, bypass the buffer, it will work. Basically the h...
Thats not directly relevant because you are comparing real time heating with stored hot water. Real time heating is dominated by the raw power you ca...
I guess that depends on where you measure it. If measured at the heat pump then the flow rate for any given heat transfer at any given deltaT (across...
Typically DHW tanks are cylindrical and ~1.4m high (or more) Is the loft a possibility? If not then with the relatively small space available you ...
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Readers here please note that Derril Water and many oth...
By Transparent , 23 minutes ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
OK, fair enough then. I calculated loss based on 24 ...
By JamesPa , 36 minutes ago
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RE: Mitsubishi Ecodan FTC6 settings
@clockworks how have you been getting on? Hopefully not...
By F1p , 40 minutes ago
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RE: PV and battery long payback - sense check query
Having spend 14 years in local government (after 30 yea...
By JamesPa , 42 minutes ago
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RE: Is it the house or the equipment?
- Comfort and silence (for heating) - Heat storage wi...
By bobflux , 48 minutes ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
Eventually we managed to get our Arotherm to cool, even...
By Batpred , 50 minutes ago
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RE: Advice on Vaillant Sensocomfort
Oops, I meant Sensocomfort (the UI to the controls)
By Batpred , 59 minutes ago
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RE: Heat Pump Training vs. Real-World Installation
Our instal was very much the opposite. White haired blo...
By Batpred , 1 hour ago
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RE: Flushing system, cleaning and inhibitor
While skim reading a manual for our Vaillant HW tank, I...
By Batpred , 2 hours ago
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Of course, what do you expect, human beings are human b...
By JamesPa , 3 hours ago
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RE: 'Chinese Diesel Heater' to heat the home .....
Old thread but I'm new to the forum so new to me. How...
By BlizzardGreen , 19 hours ago
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I'm not sure why you would want to make it more difficu...
By JamesPa , 23 hours ago
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RE: Wood burner with ASHP - direct air?
@lucia FWIW installed a woodburner some years ago. ...
By JamesPa , 1 day ago
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RE: Who's your electricity provider and what's your tariff?
@toodles I invested on Miele a pair of frodge frozor wh...
By AgentGeorge , 2 days ago



