Last seen: May 14, 2025
James, On your question: Please explain why a higher flow rate is inefficient and undermines control. When a single pump serves multiple zones, ...
James, Your questions cut right to the core of why these discussions matter. One thing I’ve noticed over the years — and this thread really highli...
@jamespa Whether zoning is needed depends on how the occupants use the space, the layout of the house, and how heat losses vary between areas. It’s n...
The biggest mistake in zoning is basing the zones on superficial factors, such as dividing areas by North, South, East, West, or even upstairs and dow...
You’re absolutely right that many past attempts at zoning and hydraulic separation have failed to deliver the desired results. Poor results, short-cyc...
Hi Colin — you’ve clearly thought deeply about the system design, and your questions reflect exactly the kinds of practical challenges that are often ...
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RE: Replacing my 18 month old Hitachi Yutaki ASHP
It will be good then to see some plots tomorrow morning...
By JamesPa , 30 minutes ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
I have one fancoil in an otherwise all radiator system....
By JamesPa , 34 minutes ago
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RE: Is your heat pump insured?
@davesoa Just following up on my original post, I am go...
By Richard24738 , 54 minutes ago
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RE: How good is the app support for your heat pump?
I would describe the Vaillant app as pretty reasonable-...
By JamesPa , 2 hours ago
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If the Solis inverter has a configuration setting label...
By Transparent , 3 hours ago
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RE: Electricity price predictions
That's understandable...but I was referring to our 'oth...
By Transparent , 3 hours ago
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@batpred Inwas looking at the Ånderson Wall Box, found ...
By AgentGeorge , 3 hours ago
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RE: Solis S6-EH1P8K-L-PLUS – Why I Chose It and What I’ve Learned So Far
I'll be interested to see how you get on. Are ...
By Bash , 5 hours ago
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RE: Battery with existing PV - regulations
We submitted our papers for SEG, so hopefully we will s...
By Batpred , 5 hours ago
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RE: One Year Review: Grant 13kW ASHP - A Catalogue of Errors
@solenoid Its probably worth adding that, done well, g...
By JamesPa , 7 hours ago
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RE: Solar panels on side of house to heat water
My solar panels (both PV and thermal) have not required...
By Transparent , 10 hours ago
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RE: Rate the quality of your heat pump design and installation
@solenoid Welcome. I have made some commen...
By JamesPa , 13 hours ago
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@f1p Thanks for the info, good to know
By ThunderMink , 15 hours ago
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@toodles I will do, it can’t go any worse than my last ...
By Grantmethestrength , 1 day ago
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RE: Configuring third party dongle for Ecodan local control
Yes, it is certainly an advanced feature and quite diff...
By F1p , 1 day ago
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RE: MELcloud scheduling misbehaviour
@richard24738 We also want hot water for 7:00am showers...
By DavidAlgarve , 1 day ago
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RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
@hcas Thanks Henri. I take your point, but feel that wh...
By DavidAlgarve , 1 day ago
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RE: Flow rate discrepancy between ASHP and manifold
Ok, I think I have got to the bottom of the problem... ...
By AshRolls , 1 day ago


