Last seen: Sep 10, 2025
This is the bracket supporting our 7kW Vaillant. It looks more substantial and is designed for an higher upper weight limit and has no noise we’ve hea...
Boost goes up to your normal set temperature so it depends on how cold it has got. We can see the electricity use profile so know roughly how long it ...
I totally agree that K2 are worth it. They don’t look very different to K1 or P+ and are SO much more effective. Moving to K3 is a different step in b...
I have no connection with them whatsoever but why not ask Brendon atfor advice & replacement? You’re in Cumbria and he’s well respected in the ind...
If you go into system view on the app it shows flow temperature and you’ll easily see the DHW heating which ramps to become above your DHW set tempera...
We have a 4kW array and a Sunnyboy inverter (still working very well from original) and FIT. You need to ensure you get an AC coupled inverter into th...
If after reaching its minimum level continuous operation it cycles cleaning 80% on 20% off in an hour gradually reducing its on period to just ~15min...
For my part I was overwhelmed with the total number of questions. So I’ll answer a simple one: if one ufh zone is colder then yes you get it warmer ...
I think a room by room heat loss is a first step but with authority/discretion to include known upgrades without full documentation (one idiot would-...
If Vaillant produced a list of all of their various variables that would be valuable!
A snapshot of our 7kW Vaillant was at an OAT of 18C producing 1.1kW with 40% of the time on & 60% of time off. The lowest in continuous production...
We get extra heat loss on wet and windy days too, even the best heat loss model, the passive house one (which does allow for solar gain and shading) d...
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RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
I am about to get my Mitsubishi 14kW Zubadan serviced b...
By downfield , 6 minutes ago
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RE: What crazy nonsense are inverter limits and why are they imposed?
While I won't try to over-ride anyone's personal choice...
By Scalextrix , 39 minutes ago
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RE: Who’s Caved and Switched the Heating On Already?
Central heating still switched off and will be until Oc...
By AllyFish , 41 minutes ago
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RE: Is a Valliant Inline 6kW heater a BUS buster?
I think the problem you are having comes down almost en...
By JamesPa , 1 hour ago
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RE: COP is not the only measure of efficiency
We keep all our TRVs fully open using the whole house a...
By Old_Scientist , 1 hour ago
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RE: Midea ASHP – how to set weather compensation
I think it is a bug in the code, it comes on even when ...
By cathodeRay , 16 hours ago
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RE: Havenwise App Help & Forum Support – Get the Most from Your Heat Pump
I am pleased to say at 4pm today we have added another ...
By ASHP-BOBBA , 17 hours ago
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RE: Buffers, hot water and cooling
@jamespa Your reasonably close! Especially with warmer ...
By dgclimatecontrol , 19 hours ago
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RE: Renewables & Heat Pumps in the News
To unpack this a little.... 1) how many of us in this...
By Lucia , 1 day ago
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RE: Vaillant aroTherm Plus 10kW thoughts?
@realevil the fans and fan speed / coil size (height, w...
By ASHP-BOBBA , 2 days ago
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@morgan this can just be done by your sepecilist when t...
By ASHP-BOBBA , 2 days ago
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RE: Anyone still weathering it out with Agile?
@toodles I guess it all comes down to import averages. ...
By Tim441 , 2 days ago
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RE: 300 Liter Tank - Do I have to heat it all?
The size of DHW tank affects the anti-legionella cycle....
By Transparent , 2 days ago
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RE: Heat Pump SCOPs – The Truth Might Not Be What You Think
@scalextrix Name plate capacity
By HCas , 2 days ago
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RE: Solar Thermal DHW and ASHP
I was originally contemplating a solar thermal installa...
By jamespetts , 2 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
My system installed in July 2024 has produced 6.4mWh in...
By jamespetts , 2 days ago
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
@judith thanks for your suggestions. Starting from col...
By GrahamF , 3 days ago
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RE: Inventor (Midea) Heat Pump short cycling advice
I switched to "fan coil mode" to be able to set water t...
By immunity , 3 days ago
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RE: DESNZ doing a survey which asks the right questions!
Without a survey their only source of data is probably ...
By JamesPa , 3 days ago