ASHP in Hampshire - Air Source Heat Pumps (ASHPs)

RE: ASHP in Hampshire

batalto — Wed, 21 Jun 2023 07:40:41 +0000

Hope you're all enjoying the lack of heating in this weather. The forum is dead until October and then we'll get the "why is my bill bigger" crowd.

Thought I'd share an update on our power consumption over the year

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This month we have used 1kw... And that was me messing around with CT clamps under load confusing things.

RE: ASHP in Hampshire

Derek M — Fri, 06 Jan 2023 15:32:02 +0000

@derek-m try midea2020

Thanks Batalto, much appreciated.

RE: ASHP in Hampshire

batalto — Fri, 06 Jan 2023 14:12:30 +0000

@derek-m try midea2020

RE: ASHP in Hampshire

Derek M — Fri, 06 Jan 2023 13:06:37 +0000

Hi Batalto,

Could you please remind me of the password to access the Midea manual that you provided quite some time ago.

RE: ASHP in Hampshire

batalto — Thu, 22 Dec 2022 14:39:34 +0000

@bob77 I used 1.8MW which is my highest use - ever. But that includes all the power in the house too. The ASHP has never been so cold. Last year I was already on weather comp so benefits this year stem from the LLH removal mostly (and some more radiator balance). My second battery also came into its own this month

RE: ASHP in Hampshire

Bob77 — Thu, 22 Dec 2022 13:11:26 +0000

Nov 21 - Dec 21st bill is in and the damage is... £450. I averaged 22.94p/kWh using a mix of solar and batteries. Interesting is was basically a 50/50 split between off peak and on peak power. The latter costing me 5x the off peak cost.

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Without the batteries it would have been £617 - so saved a few hundred in the last month during the cold snap.

I have just had my bill for the same period and it was £405. However my electricity usage was around 30% lower than last year, despite the weather being much colder and the ASHP being set too high for much of the time as I optimised the settings. The next month will be the real test as I think I have the WC curve dialled in now.

RE: ASHP in Hampshire

batalto — Thu, 22 Dec 2022 10:29:26 +0000

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Without the batteries it would have been £617 - so saved a few hundred in the last month during the cold snap.

RE: ASHP in Hampshire

cathodeRay — Wed, 23 Nov 2022 19:40:38 +0000

Hey ho indeed. Glad my Stilson is still in the toolbox.

I think you once mentioned a Freedom Midea app, as opposed to the Midea app. It seems @grahamh may have written this app, and apparently it records and displays flow rates and LWT/RWT:

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which means it might well make it possible to use the flow rate formula to calculate output if the app has historical data. Did you manage to download and use the app?

Freedom also now have something called the FHP Cloud, launched last month. It has installer and home owner browser based dashboards and the former looks very interesting, potentially all sorts of data, see here. I've managed to login to the installer dashboard, but haven't figured out a way to get it to display data, probably because I haven't got the "incredibly simple to install piece of hardware".

RE: ASHP in Hampshire

batalto — Wed, 23 Nov 2022 19:20:45 +0000

@cathoderay well they told me I could take it out. So hey ho. If I ever had a big problem it's got ball valves in place, I can just pop the whole thing back in. No one would ever know

RE: ASHP in Hampshire

cathodeRay — Wed, 23 Nov 2022 19:19:24 +0000

@batalto - I've also put this on the Samsung buffer thread, but am adding it here as it is also relevant here:

I've just had a look at Freedom's latest Midea installation manual, available here, only to find the kiss your warranty goodbye message is there, albeit with slightly different wording:

"Every system must have hydraulic separation between the primary (heat pump) and secondary (heating circuit) pipe work. This can be via a buffer tank, low loss header or plate heat exchanger. If you install the unit without hydraulic separation, you will void the warranty."

Arrgghh...