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Judith
@judith
Member
Prominent Member
Joined: Nov 28, 2023
Last seen: May 25, 2025
Profile Activity
Topics: 2 / Replies: 349
AllTopicsReplies
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...

7 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 ...

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

The high temp is only used for the legionnaires cycle and the rest of the time it should be in a system designed to be below 45 and mostly ~30C. I can...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Advice on Vaillant Sensocomfort

The app and sensocomfort align for instantaneous readings but the app gives you the pattern over time and allows you to see heating and dhw independen...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Simulation of ASHP with Gas boiler as part of decision process

I have a suspicion @cathoderay that when you tuned your oil heating down to reduce your bills that the temperature dropped incredibly when not on. So ...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Advice on Vaillant Sensocomfort

I can’t answer your questions on the inactive mode since we’re not using at present (using expanded because we still have solar gain) but I can answer...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Battery sizing - How low can you go!

if course what I should have written was INcompatible within their own range!

8 months ago
Forum
Energy Storage
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RE: British Gas versus Octopus: Two possible heat pump routes - how to evaluate them?

AWESOME and a new concrete floor! Concrete doesn’t cost much but the principle of something extra is great. i hope it continues to work out well.

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Book: Not Zero

I clearly didn’t pick up the best review so many thanks to @majordennisbloodnok for choosing a better one! Like him I’m not going to waste my time and...

8 months ago
Forum
Well & Truly Off The Grid
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RE: Battery sizing - How low can you go!

We have 6kW of PV but our neighbours have large trees that the sun can’t get over in winter, and a 9.5kWh battery. I assumed we would get another batt...

8 months ago
Forum
Energy Storage
Reply
RE: Book: Not Zero

I was intrigued by this post so had a look on Amazon as Jeff sugests. The book has (today) 281 ratings and an overall score of 4.7, so it ought to be ...

8 months ago
Forum
Well & Truly Off The Grid
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

Thats great to read! Have you any detailed figures? Is the benefit more in shoulder season or in the coldest periods for example?

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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