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AllyFish
@allyfish
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Noble Member
Joined: Oct 31, 2022
Last seen: Oct 20, 2025
Profile Activity
Topics: 23 / Replies: 479
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Reply
RE: 300 Liter Tank - Do I have to heat it all?

Hi @martingale, welcome! You can't really have too big a DHW cylinder, but you can have one too small. If it's well insulated modern unvented cylinder...

3 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Flow Rate & Low Loss Headers

Hi @morganr, welcome. Interesting post. I looked at the Adlar literature. One thing jumps right out, this diagram, which is plain wrong. I need to c...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: All your heat pump problems solved by -- a plate heat exchanger in a plinth!

@iaack of course, you're right, but that's not the market the OEM of 'Heat Saviour' is targeting, They are targeting retrofit ASHP heat pump market, s...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: All your heat pump problems solved by -- a plate heat exchanger in a plinth!

EH? so this is a water to water primary to secondary plate heat exchanger, [PHE] buried in a unit to sit under the DHW tank. So it compels every insta...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Charging the last 5%

@chandykris our experience is that the BESS added to the solar retrospectively is a financial game changer. During the heating season we schedule ch...

5 months ago
Forum
Energy Storage
Reply
RE: Charging the last 5%

Hi @chandykris, we have two 6.5kW Growatt batteries, they do take a long time to charge the last 5% or so. It's a reduction in charging power as the b...

5 months ago
Forum
Energy Storage
Reply
RE: Renewables & Heat Pumps in the News

No surprise the Telegraph has jumped to their predictable hasty conclusion. The subject of grid supply and demand balancing and grid resilience is a c...

6 months ago
Forum
Well & Truly Off The Grid
Reply
RE: The Great British Heat Pump Quiz

That was fun, thank you @editor. 85%, which is just as well after 35years in the HVAC industry. Some careless answers on my part, and maybe a couple o...

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

@jamespa yhey probably are, as EN 14511 prevails in the UK and EU. That said, it was the COP data at identical A&W temperature combinations that w...

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

I would be very wary of manufacturer's published SCOP data. One very common brand retailed in the UK using Japanese badged up R32 ASHPs has SCOPs that...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are MCS are finally improving (some of) their guidelines?

The update of MCS 031 has been heavily criticised by many of the better and higher SCOP achieving installers over on LinkedIn, etc. MCS 031 update is ...

7 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: Octopus Cosy 6 launched

Oh dear, someone majorly goofed at Octopus. They've credited me back about a year's worth of bills today. Bumping my account credit from £375 to £1568...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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