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Judith
@judith
Member
Prominent Member
Joined: Nov 28, 2023
Last seen: Aug 9, 2025
Topics: 2 / Replies: 371
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RE: Vaillant AroTherm Plus 7kW

@scalextrix if your under unit heater is like our Myson ‘kick step’ then you just switch it to summer mode and it works when needed in winter just fin...

2 months ago
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RE: Renewables & Heat Pumps in the News

Here’s a little more technical detail/p>

2 months ago
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RE: Wattson has landed!

A good start but I’m glad I didn’t need to learn something. Perhaps my questions were ambiguous but. Got contradictory answers on room stats and the w...

2 months ago
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RE: Renewables & Heat Pumps in the News

Thanks @lucia I look forward to some technical facts as well as executive summaries. The foreign reports are not separate investigations just translat...

2 months ago
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RE: Vaillant AroTherm Plus 7kW

Our system starts cycling below ~8C and I’ve tried to tie that to output kW and lost interest. Our system is high volume plus a volumiser so it cycles...

2 months ago
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RE: Flow Rate & Low Loss Headers

@morganr Hi, like you I did an awful lot of my own calculations to ensure I knew what was needed. So I appreciate how much time you’ve put into it, we...

2 months ago
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RE: How accurate was your heat loss survey?

@scalextrix for our house 1950s detached the air leakage proportion was30% of the supposed total, using the default values. In fact with the measureme...

3 months ago
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RE: How accurate was your heat loss survey?

The usual problems are not including known insulation improvements or the defaults for air leakage. If you have an actual air loss measurement it ca...

3 months ago
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