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Last seen: Aug 24, 2026
thanks, that was very useful reading. It seems grant pumps can modulate more than most. I am still wondering whether a 5kw Vaillant would do, whi...
I filled in my g99 with ukpn without any issues. Of course , my inverter is type approved
@jamespa Makes sense to me. The simpler it is to install it, the more people will do like Mars and not be held back by an electrician visit… On ...
Thanks guys. I was referring to the epc surveyor. We have not yet entered the paid ASHP survey stage, but it is great to have a good basis to ...
Yes, but many circuits do not have RCD/RCBO. As they are not mandatory in all circuits (and as usual the regulations do not mandate them retrospective...
I think you may be right. 🙂 Still, instructions of CTs are that they should be installed around the live condutor. Probably because, as you...
Yes, live has been brown for a while. I still have quite a few pre 2006 circuits where it was red.
I just tried this and got 7.2kW on the HG site. Using our gas consumption, based on the last 2 years, I get 4.17 - 6.26 kW. It seems that we can cope ...
I had an initial estimate for a Grant HP, as we are looking to replace our old combi boiler. The price seems interesting, but I have not looked much a...
@bash provided some details on his setup on previous posts and there was some debate with @transparent. I can't find where (it seems good ol' Watso...
So we are starting to see the options land where they may be worth drilling down... I had a look at the spec for the 5kw vs the 7kw Vaillant and it ...
After running a search in the god ol' watson, this is where it took me for running costs of heat pumps. No further comments.. I came across this rec...
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Degrees of Separation
Latest Posts
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
By Mars , 2 hours ago
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@kilgorexv, I actually think doing your own calculation...
By Mars , 2 hours ago
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RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
By JamesPa , 16 hours ago
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RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 1 day ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Swings and Roundabouts, you win some…. ...
By Toodles , 1 day ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 2 days ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 2 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
There is scope for product development here. I for one...
By JamesPa , 2 days ago
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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 2 days ago
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RE: The good, the bad and the not that great – my heat pump installation
@burtis, I’ve followed this thread pretty much from the...
By Mars , 5 days ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
First time poster here but I can share my experience as...
By SCH , 5 days ago
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RE: Is it the house or the equipment?
...which, I've found out, is pretty much impossible to ...
By Majordennisbloodnok , 6 days ago
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