Last seen: Jun 22, 2025
@gary The tank is 210 litres. I work from home as a baker so I can use a lot of water during the day but using the old MegaFlo and oil boiler, we neve...
Thanks James, this is still something on the to-do list. I know there's more diagnostics to be done. I was just hoping the new pump would stabilise th...
Thanks. I still need to check this out. It's taken all my mental capacity to wrap my head around the heat pump. So it should be as simple as just adju...
I haven’t looked at that side yet. But so far, the only thing that’s changed is that we’ve had the heat pump changed and COP is getting worse. I can s...
@jamespa It does appear to be going into defrost more frequently than the previous pump at similar temperatures. Would that account for the higher ene...
@jamespa Thankfully they didn’t touch the settings. They checked the pressure on the tank but that’s all.The only work they did was on the external un...
Just a follow up… first full day of the new heat pump… worst COP in weeks. COP down from a regular 3.4 to 3.8 to 2.7 yesterday (that’s just heating, n...
Just a bit of an update... thanks to the information you've shared with me, I was able to argue the case of the oversizing a little better.They revisi...
@jamespa Thanks James. The DHW COP is the worst we've had yet strangely. And there were no big drains on the water yesterday. It's like it's heating...
@jamespa Thanks for this.The COP for yesterday was 3.57 (heating 3.79 water 0.87) so the DHW eco setting might be making a difference but I'll keep mo...
@jamespa Thanks again for all the information. I've read everything and it's very helpful.I've lowered the DHW temperature to 48 which after one day h...
@jamespa Thanks again. That helps clarify what we need to be looking at.I've been monitoring it over the last few days and COP has been: 24/3: 3.17 ...
Latest Posts
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ah that's interesting @jamespa - so could one 10kW (say...
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Funny story Graham, when I started looking to ...
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RE: Buffers, hot water and cooling
@dgclimatecontrol thanks, that's helpful.
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RE: Failing heat pump system - seeking thoughts on a rebuild
I realise im overdue an update on my situation. first...
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RE: Replacing Worcester oil boiler with an ASHP
@toodles thanks. I was told by the engineer that this h...
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RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
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RE: What crazy nonsense are inverter limits and why are they imposed?
A week later, I'm finally picking up this comment... ...
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RE: COP is not the only measure of efficiency
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I am pleased to say at 4pm today we have added another ...
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To unpack this a little.... 1) how many of us in this...
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@morgan this can just be done by your sepecilist when t...
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RE: Anyone still weathering it out with Agile?
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RE: 300 Liter Tank - Do I have to heat it all?
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RE: Heat Pump SCOPs – The Truth Might Not Be What You Think
@scalextrix Name plate capacity
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RE: Solar Thermal DHW and ASHP
I was originally contemplating a solar thermal installa...
By jamespetts , 3 days ago
