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GrahamF
GrahamF
@grahamf
Member
Estimable Member
Joined: May 2, 2025
Last seen: Apr 20, 2026
Topics: 6 / Replies: 115
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RE: Best temperature wave form for best economy and efficiency .

@jamespa I read the original post, which I interpreted as saying that he wants the house to be 16C during the day and 15C at night. I think he is a f...

3 months ago
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RE: Cascade 2x Grant Areona 10kw ASHP - Ongoing setup issues

This may not be a helpful post, as you have already purchased the equipment, but I have a couple of questions: Assuming you have just installed th...

3 months ago
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RE: Best temperature wave form for best economy and efficiency .

A couple of suggestions:   It is important to set the weather compensation curve correctly at both ends. Otherwise, a change of outdoor te...

3 months ago
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RE: Volumiser required on Grant R290 air source heat pump?

I have a Grant Aerona R290 15.5kW heat pump, which is running very nicely. Certainly don't go for the Aerona3 R32 heat pump or its antiquated control...

3 months ago
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RE: Volumiser required on Grant R290 air source heat pump?

@jamespa I agree that it is important to avoid a 4 port buffer or low loss header, due to the impact on efficiency. My understanding is that volumis...

3 months ago
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RE: Same Heat Pump Size, Different Sized Homes: Would One Be More Efficient?

I would agree with your view that the larger house will be less efficient. The basis for this is: There might be longer pipe runs outside the hea...

3 months ago
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RE: Heat Pump Heats the House… But It’s Not Cosy. Emitter Changes or System Tweak?

@toodles interesting suggestion, thanks. I will try to resist the temptation to hijack someone else's topic to solve my problems!

4 months ago
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RE: Advice on internal circulation pump noise

@jtg while you are checking the plumbing of the buffer tank, make sure the flows are at the top and the returns are at the bottom. Mars explains in t...

4 months ago
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RE: Advice on internal circulation pump noise

I agree with @jamespa that your buffer tank and secondary pump may not be required at all. I have a 1960s two storey house with 30 radiators. I have...

4 months ago
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RE: Heat Pump Heats the House… But It’s Not Cosy. Emitter Changes or System Tweak?

A quick Google search showed that building regulations have required floors to be insulated since 1990, so you should have some. However, your floor ...

4 months ago
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RE: Diagnostic Data Needed for Repeatedly Failing Tesla Powerwall 3 System

@batpred I installed Home Assistant on my MacBook Pro last night. This is just a temporary platform for me to learn about it. I tried to use the Tes...

5 months ago
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RE: Diagnostic Data Needed for Repeatedly Failing Tesla Powerwall 3 System

@batpred thanks very much for your help. I rang Tesla support and he sent me the SSID and password of the lead Powerall. I downloaded the diagnostic...

5 months ago
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