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Judith
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Judith
@judith
Member
Prominent Member
Joined: Nov 28, 2023
Last seen: Jul 20, 2025
Profile Activity
Topics: 2 / Replies: 366
AllTopicsReplies
Reply
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...

1 month ago
Forum
Introductions, Forum Rules & Updates
Reply
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...

1 month ago
Forum
Well & Truly Off The Grid
Reply
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...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Help Stop the MCS Heat Pump Monopoly

Response sent yesterday

1 month ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
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...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant & OVO partner up to offer Heat Pump Plus

@westkent sorry to hear that you were mis-advised, but sadly not surprised. If it were me I would want to move as a matter of principle and several of...

2 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Charging the last 5%

Certainly our Givenergy battery shows the same effect with the newest software. It is deliberately designed to reduce the rate of charge so it has a “...

2 months ago
Forum
Energy Storage
Reply
RE: Advice for ground source heat pump in new build with PV and batteries

@johnmo no external air supply, just the room air. We do have CO detectors and never had any alarms. But the measured flow on the MVHR system vent ...

2 months ago
Forum
Grounds Source Heat Pump (GSHPs)
Reply
RE: Advice for ground source heat pump in new build with PV and batteries

We have a cassette style inset stove, much more efficient than an open fire, which is less than 5kW so doesn’t require any deliberate ventilation. It ...

3 months ago
Forum
Grounds Source Heat Pump (GSHPs)
Reply
RE: Vaillant & OVO partner up to offer Heat Pump Plus

@westkent assuming you’re still writing about the Vaillant/OVO 15p for heat pumps offer, I thought the offer was now “full”. If the topic has wander...

3 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
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