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Last seen: Apr 15, 2026
@davidalgarve compared to the UK, several things seem strange about this: Our electricity suppliers have standard outgoing tariffs, which we pick ...
@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...
@davidalgarve I am curious that you are not receiving any credit for exporting. Is there any possibility of fixing that?
@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...
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...
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...
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...
The Grant Aerona Smart Controller has an interesting approach. It has a parameter called Room Temperature Correction. It applies the following formu...
@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...
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...
@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...
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...
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@agentgeorge no idea if they’ve made changes, but I got...
By AndrewJ , 49 minutes ago
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RE: Who do I complain to about a poor ECO4 installation, can anyone advise?
@wesleyp1874 if you are on Facebook there is a Grant un...
By Grantmethestrength , 1 hour ago
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RE: Rate the quality of your heat pump design and installation
@josej, this is exactly where the industry keeps trippi...
By Mars , 1 hour ago
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RE: Say hello and introduce yourself
@alva welcome to the forums and feel free to start a ne...
By Mars , 2 hours ago
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Ordering up the materials to install another 5 panels o...
By David999 , 2 hours ago
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RE: MCS Quality Audit – Has Anyone Had One? Did It Lead to Remediation?
So under part G or the G3 rules you have a responsibili...
By ASHP-BOBBA , 3 hours ago
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I intend to replace the Plex pipework in the area of my...
By DavidAlgarve , 6 hours ago
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RE: Electricity price predictions
Mention on the news about Octopus and one or two other ...
By Toodles , 7 hours ago
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RE: Air-to-air heat pumps - best models and installers
Are you creating a whole new category for A2A?
By ASHP-BOBBA , 17 hours ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
There isn’t as far as I know, @djh, but you’re welcome ...
By Majordennisbloodnok , 1 day ago
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RE: Can anyone explain the following behaviour with a Grant Aerona 3 R30 / Smart Controller?
Final Update. Yesterday, I was going through the moti...
By Unsure , 1 day ago
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RE: How much can an east/west solar solar system be oversized?
Best performance occurs with PV string near inverter no...
By bobflux , 1 day ago
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RE: Forum updates, announcements & issues
Thank you Mars for all your dedication to improvements;...
By Toodles , 1 day ago
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RE: Selling 2 x Kensa Shoebox 7kw GSHP (New)
Hi Jain, we’ve got an ashp so I’m afraid we won’t be yo...
By Judith , 2 days ago
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No buffer or low loss header Grant controller in sens...
By JamesPa , 2 days ago
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RE: Are We Sleepwalking Into Another Race to the Bottom?
That's an amazing job to get all that in there! A truly...
By Batpred , 2 days ago
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RE: Anyone concerned about GivEnergy?
Thanks for your advice - I'll keep trying with the inst...
By JohnDwyer , 2 days ago
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RE: Plug and play solar. Thoughts?
I am also yet to find a case where an installation that...
By Batpred , 2 days ago
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RE: British Gas vs Octopus Energy vs Heat Geek vs EDF vs Aira vs OVO vs EON.Next vs Boxt
This is what I got from OVO. At least it was quick.. ...
By Batpred , 2 days ago
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RE: IVT greenline HT Plus E - Circulation Pump Constantly On
Welcome to the forums. Irrespective of which brand yo...
By Mars , 3 days ago
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RE: 7.5kW Heat Loss, But Quoted a 10kW Midea. No Re-Pipe, No Buffer Tank. Does This Add Up?
Oh, how I love these old scientists!I'm in with your 5 ...
By LeJamaisContent , 3 days ago
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RE: Jokes and fun posts about heat pumps and renewables
@jamespa Someone who is not easily phased I suppose.
By Toodles , 3 days ago


