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GrahamF
GrahamF
@grahamf
Member
Estimable Member
Joined: May 2, 2025
Last seen: Oct 12, 2026
Profile Activity
Topics: 6 / Replies: 124
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Reply
RE: What is the lowest temperature you set your heat pump to?

@craigh I would say it is a bad idea. I can’t see any logical justification for setting the flow temperature to 20C when it is 14C outside. Obvious...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Choosing a time for DHW heating?

@davidalgarve I am curious that you are not receiving any credit for exporting. Is there any possibility of fixing that?

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What is the lowest temperature you set your heat pump to?

@craigh if you have a target room temperature of 20C, then use the weather compensation curve to set the flow temperature to 20C when the outside temp...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Choosing a time for DHW heating?

I agree with @jamespa. I am on the Intelligent Octopus Go EV tariff, so it costs me 5p per kWh at night and 27p per kWh during the day. My export ta...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant ASHP keeps switching on every hour

I have a Grant Aerona 290 15.5kW air source heat pump with the latest Grant Smart Controller. The controller does not have a holiday mode. In fact I...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Issue with Grant ASHP

Out of interest, why did you buy the Aerona 3 R32, rather than the Aerona R290? You would probably be better off with the Aerona Smart Controller, r...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Any thoughts on control strategies for heat pumps?

The Grant Aerona Smart Controller has an interesting approach. It has a parameter called Room Temperature Correction. It applies the following formu...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Gaslighting in the heat pump industry – has anyone else experienced this?

@gruff2001 I had an MCS inspection on Tuesday. He checked whether we had a proper soak-away for defrosting the heat pump, looked at the pipework arou...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Gaslighting in the heat pump industry – has anyone else experienced this?

I was asked to help a lady who had an Ideal heat pump installed under the ECO4 scheme. She asked for help, because the lounge thermometer was reporti...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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