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Judith
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Judith
@judith
Member
Prominent Member
Joined: Nov 28, 2023
Last seen: Sep 4, 2025
Profile Activity
Topics: 2 / Replies: 379
AllTopicsReplies
Reply
RE: What happens when the outside temperature exceeds the upper WC point?

Our Vaillant at present (outside temp 18C and the heat pump is off since internal temperature is above the set point) has a target temperature for wat...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

they do allow a volumiser to be used, so the obvious question is could a 4 port buffer be configured as a volumiser and stay in warranty?

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is my Samsung heat pump working too well?

@pooneil Hi and welcome. I have to say you are thinking like a gas boiler and heat pumps don’t work well being treated that way. It’s best that you ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Jokes and fun posts about heat pumps and renewables

Our solar hot water is now 2C above the set temperature the pump got it to at 1pm. Thats the upside. But solar PV, nominal 6kW was generating 5.6 at n...

5 months ago
Forum
Well & Truly Off The Grid
Reply
RE: Help optimising my system!

Great progress so far, keep going you’ll get there! Your Welsh cottage part will have a very long thermal time constant, as you probably already reali...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Heat Pump - mixer shower pressure

Mixer showers need virtually identical hot and cold pressures (or at least our new one did) or you need a high flow to mix properly. Our mains varies ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Help optimising my system!

Keep turning the weather compensation parameter compensation parameter down until the house is at the right temperature for you. Once that’s right y...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Frequent power outages in the Southeast – A sign of things to come?

@jamespa our Vaillant control box, (wired into domestic power and hence on a domestic circuit trip) didn’t go back on automatically when we reset the ...

5 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Database of heat pump performance data?

That looks as if you’ve found it! I’ve browsed it a bit now. The lots of time I spent (wasted) was playing with the BRE tool before I realised tha...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: As We Head Into Spring and Summer… What’s Your Favourite Energy-Saving Tip?

We have external awnings/canopies to keep the sun out. They reduce the air temperature by 6C in the kitchen which has a large south facing window. The...

6 months ago
Forum
Your Home
Reply
RE: Database of heat pump performance data?

@madbilly I can’t help with most of your questions since I don’t work at BRE. I’m a heat pump customer with a professional science/engineering backgro...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Database of heat pump performance data?

You could try/p> BUT i spent ages on it before realising that the installation is what mattered not the pump. If a very efficient 10kW pump is bad...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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