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Judith
@judith
Member
Prominent Member
Joined: Nov 28, 2023
Last seen: Aug 1, 2025
Profile Activity
Topics: 2 / Replies: 368
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Reply
RE: Replacing Worcester oil boiler with an ASHP

@julianc 190m2 and not done a full year yet on ashp. Annual gas usage ~17,000kWh but efficiency unknown. We’ve used the wood burner a similar number o...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Widespread failure of insulation installation

Some of these documents on moisture control

6 months ago
Forum
Insulation
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RE: Replacing Worcester oil boiler with an ASHP

@julianc so far in January we’ve achieved 3.8 energy efficiency. Really pleased but we’ve not not a calibrated heat meter only the Vaillant prediction...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump quotes: Advice needed

I was looking for the link about what heat could go down each microbore pipe. But I’ve been beaten to it. Your heat loss document should give the loss...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump quotes: Advice needed

In no particular order some thoughts:- Clivet is a badged Midea and personally I wouldn’t have one given me. Since a Heatgeek trained installer sa...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 8.2kW GivEnergy

On your first point @rosst your best best is to start with your installer, the manufacturer and dedicated forums possibly on Facebook for your type, s...

6 months ago
Forum
Energy Storage
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RE: Vaillant Arotherm ASHP gets noisier when it gets colder outside

@jamespa ours (without a noise issue) was installed in September. I too recall reading the firmware is in a hardware (not-remote programmable) chip an...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

@cathoderay digging into further dirty details are your fully open trvs suitable for bidirectional use or are they your secondary constriction?

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant - Downstairs radiators not getting warm

@samiebon1 When adjusting lockshields its worth bearing in mind that some have a tiny range over which the adjustment makes any difference. S...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant - Downstairs radiators not getting warm

@samiebon1 our DHW gets to 48C with a heating temp of ~55C within ~ 45mins but it’s not usually empty (residual ~35 in bottom third of tank). The la...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

@cathoderay &@bobtskutter This is getting interesting! I was convinced from much earlier posts that the early hypothesis of the PHE being inad...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump starting current

@transparent to give context to my results of slow switch on current. Our Vaillant is inverter controlled, the system is open and the overall system i...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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