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AllyFish
@allyfish
Contributor
Noble Member
4205 kWhs
Joined: Oct 31, 2022
Last seen: Mar 17, 2025
Profile Activity
Topics: 22 / Replies: 457
AllTopicsReplies
Reply
RE: Does our solar generation sound about right?

@lfranklin used to divert excess solar PV generation into a system hot water tank via the 3kW immersion. About £350-400. Friends with them have said t...

2 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Does our solar generation sound about right?

@lfranklin ah, yes, you'll need a smart meter for Cosy. My PV export tariff is 'Outgoing Octopus 12M fixed' their standard 15p/kWh fixed arrangement. ...

2 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Does our solar generation sound about right?

Have you got a variable rate tariff and have scheduled the Growatt battery to charge during cheap rates to supply during standard and peak rates? It's...

2 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Retrofitting: moving to ASHP old oil boiler in large old property - experience/advice please on MSC calcs

@katcesca what flow temperature has your MCS estimate based and sized the design on? This is THE most fundamental element of an ASHP efficiency and th...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Our Grant Aerona R32 13kW ASHP installation

@marvinator80 you got lucky on the SAP EPC lottery! I went up from a D to a C. My heating and hot water scores both went DOWN after ASHP and solar wit...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: This does not make sense - documents needed for EPC score

@mike-patrick - click on 'document' @ronin92 - clearly whoever is in charge at the BRE and tasked with preparing the SAP methodology for heat pump e...

2 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Our Grant Aerona R32 13kW ASHP installation

@marvinator80 ahhh, right, check the cylinder stat. Here's the info for that stat in Appendix A p.30. When the stat is demanding heating, the green LE...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Yearly maintenance

@hughf refrigerant charge quantity is critical. The best place to charge the unit is in the factory when built, where equipment is calibrated and cont...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Our Grant Aerona R32 13kW ASHP installation

I would use the ASHP for HW generation, as, even accounting for the fairly slow pre-heat time when the flow through the ASHP cools a bit before warmin...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Move along, nothing to see here....

"He's got heat meters fixed to the pipework. Room temperature monitors" @mjr they got thrown under the BUS. The current BUS scheme requires no energ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: This does not make sense!🤔

@andris EPCs can be a load of rubbish, my EPC when I was heating by oil rated my main heating and hot water was 'average' with a boiler that was 80% e...

2 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Our Grant Aerona R32 13kW ASHP installation

@marvinator80 sounds all good. Pleased it has gone well. My wallet-busting 260kWh consumption last week was offset a little by a decent 60kWh solar PV...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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