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Old_Scientist
@old_scientist
Member
Prominent Member
Joined: Jun 16, 2024
Last seen: Dec 19, 2025
Profile Activity
Topics: 6 / Replies: 309
AllTopicsReplies
Reply
RE: SolarPV tables / online calculator

We've only had our solar since last June, but so far for me it's been very accurate and within the published standard deviation each month. Yes, ...

9 months ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Newbie out of her depth – Samsung AE120RXYDEG 12kW heat pump

Same here @jamespa - we have a 12kW Samsung ASHP, solar and are currently considering adding a Tesla PW3, but no way do the numbers stack up financial...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung Gen 7 R290 12kW is not behaving how I expected

Yes, that sounds correct. I would say try both options and see which works best for you. I wouldn't aim too low though, if you already know 34C is re...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Visit a Heat Pump sessions.

Congratulations @toodles, that's a fantastic result. Well done! I know I would have loved the opportunity to visit a heat pump installation before c...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Towel rails. An unexpected final hurdle

I think the issue is that MCS recommends 23C for bathrooms, which requires large emitters, and as mentioned above most towel rails simply do not emit ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

Besides the TOU tariff issues, where we may save usage at one rate and then use more in recovery at a cheaper rate, I find an overnight setback is mos...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My house is too big and the Vaillant 7kW heat pump can't heat it when temperatures drop below 4C

There was a recent thread over on the openenergymonitor forum discussing the issue of Vaillant 7kW unit not being able to deliver anywhere near 7kW (s...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Unvented Hot Water cyclinder 300l 50c vs 60c

It might do, try it and see? As the majority of your usage is showering, where the hot water will be blended down to ~38C, heating it hotter should ...

10 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: DHW Efficiency

Estimating COP for DHW is complicated by the fact that the flow temperate is not constant, but rises steadily over the heating cycle. Manufacturers ...

10 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Hot water tank losing temp overnight.

In the summer you can see another problem, where the pumps will run after 24h of inactivity to prevent pump seizure. This can be a pain if you have a ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Optimising DHW in summer (once heating season ends)

Yes, I already run in the Samsung equivalent Quiet Mode for DHW, which limits output to around 70% and which is more efficient. Now I'm looking at t...

10 months ago
Forum
Domestic Hot Water & Cylinders
Topic
Optimising DHW in summer (once heating season ends)
10 months ago
Forum
Domestic Hot Water & Cylinders
Replies: 2
Views: 983
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