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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Nov 30, 2025
Profile Activity
Topics: 23 / Replies: 490
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RE: Legionnaires' Disease & Home Hot Water: Understanding Risks and Prevention

I've ditched the weekly 1hr Legionella cycle using the 3kW immersion heater fitted to a Grant 250L pre-plumbed cylinder. I was finding it ineffective ...

1 year ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Placement of Samsung R290 ASHP

Sadly a very significant downside, turned out the 'too good to be true' HFO synthetic refrigerants like R1234yf and R1234ze were, well, too good to be...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are You Getting the Most Out of Your Renewable Energy?

Yes, I have the 'Home-me' (TM) integration system too. Similar set-up, stuff like Growatt Solar + batteries + Grant [Chofu] ASHP. All should just be s...

2 years ago
Forum
Your Home
Reply
RE: Solar Performance

@matenateson it's good. Welcome on board! We have a modest 3.6kW 9 panel array on a house which one company dismissed as 'not suitable for solar PV' b...

2 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Have Octopus Energy discovered a way to Narnia?

Hello @davesoa, some things I would cross check between different heat loss calculation estimates, in order of greatest influence on heat loss estimat...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Rising Damp – Production Recommendation

Hi @editor, a lot of damp is mis-diagnosed as rising. Often it is penetrating damp through the fabric, common in older solid wall properties in the co...

2 years ago
Forum
DIY
Reply
RE: Noise problems with newly installed Samsung 8kW ASHP

That could be the case, depending on where the triple rad is in the circuit. We only have one triple on a 20 rad system, which is in a conservatory. T...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Noise problems with newly installed Samsung 8kW ASHP

Timber framing that is dry lined can be a very effective noise amplifier to anything fixed to it. A good analogy is a carelessly mounted bathroom extr...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What is Wrong with our Heat Pump Installation?

With BESS the ASHP is best. Charge battery for free from solar, then run ASHP in HW mode for an hour = free hot water + COP advantage that direct imme...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Noise problems with newly installed Samsung 8kW ASHP

ASHP noise from the outdoor unit should not transmit through solid walls and DG windows to inside. You would hear it through open windows however. If ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost for Running My Air Source Heat Pump

@holts Ah, now that's revealing! UFH downstairs + 50degc flow temperature must mean the installers are planning to using mixing valves on the UFH ma...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Massive Electricity Cost for Running My Air Source Heat Pump

Hello @holts, a weather compensated flow temp of max 50degC via an ASHP is going to have quite a poor COP and be costly to run. If you can limit the L...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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