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Judith
@judith
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Prominent Member
Joined: Nov 28, 2023
Last seen: Aug 6, 2025
Profile Activity
Topics: 2 / Replies: 371
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Reply
RE: Valiant Aerotherm Hot Water Heating Status?

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...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Battery storage solution with ASHP

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...

10 months ago
Forum
Energy Storage
Reply
RE: Minimum ASPH outputs?

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...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Moving from two zone to single (open) / how to select a circulation pump - advice please

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 ...

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

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-...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Aerotherm Plus - What is Green IQ setting?

If Vaillant produced a list of all of their various variables that would be valuable!

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Minimum ASPH outputs?

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...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

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...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Aerotherm Plus - What is Green IQ setting?

I too would like to read Vaillant’s explanation since it seems to just be a marketing gimmick on gas boilers and the sensocomfort is to be used on all...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

First “no blower test above 1ACH”. If these are done on a building site on a typical design, once this passes the rest of the houses are built the sam...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

Somebody above added a throw away line about air leakage through chimneys Here are some measurements (and lots of references) from BRE. Mvhr sy...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP noise, and running a high temperature heat pump at low temperature

Hi Coli, @ccap Are you planning to apply for the BUS £7500? If so you have to follow the MCS rules which mean any fossil fuel heating must be removed ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
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