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Judith
@judith
Member
Prominent Member
Joined: Nov 28, 2023
Last seen: May 31, 2025
Profile Activity
Topics: 2 / Replies: 349
AllTopicsReplies
Topic
SensoCOMFORT or VRC700?
1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 2
Views: 773
Reply
RE: New ASHP system - choices

If you find the spec sheet of a 12kW Midea it’s only about 10kW at -2C (design temp for a lot of south England) whereas the 11kW Mitsubishi could actu...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

The above beautifully detailed reply by Ray shows the issue of units used. Air changes per hour ACH are easy to visualise and hence a larger room volu...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

If you want to get into engineering /architectural details the there are a couple of good blogs from guys, one with a solid wall cottage

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installing a heat pump in a Grade II listed property

Personally I wouldn’t touch BG with a barge pole, based on 2 family experiences with them when they went into solar. On your own heat loss estimate ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Electricity price predictions

Or is refusal to burn wood when the market price is above the strike price (and the system needs power presumably) simply gaming the system to maximis...

1 year ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Electricity price predictions

I’ve been educating myself on electricity supply issues and the above research briefing is a balanced summary. Newspapers and statements from companie...

1 year ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@derek-m and others i think I’m getting there, so can I try this out…..? There are too many dTs in this game. Derek rightly corrected me on averag...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Retrofitting UFH with a heat pump already installed

We’ve just had ufh in our (not yet finished) extension but the rest of the house has radiators (and will stay that way). We really had to insist that ...

1 year 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

Naive input here: I understand that LLH are supposed to act as impedance transformers (when set up right), giving the option of a higher delta T acr...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Electricity price predictions

I’m not that stupid, but I’m having trouble getting my head around this, science, engineering, physics, control engineering and programme management t...

1 year ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Dual Fuel Towel Rail valve settings.

Aaaaah! your situation is more complicated than I realised!

1 year ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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