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Last seen: Oct 1, 2025
@editor Mars, your unit had a co of 3, My customers had a COP of 5. He has used nearly halve the electricity you have to do the same job, that will be...
Markc, I am sorry to say but with a flow temperature of 50 deg C at this time of year, I hope you have a very big pocket because your bill is going to...
@caroline2000 Do not despair, 9 times out of 10 it is a case of so cloce but so far. Often with minor adjustnents to the equipment and the way you opp...
@caroline2000 Your high energy bills are mor than likly caused by your thermostats. The heat pump is running flat out all the time and not modulating,...
It is very simple, you are treating your heat pump in the same way as your old boiler, your het pump probably produces 5-12 Kw, Your old boiler probab...
@helensq An air test of 4 m3/hr/m2/hour is not good at all, it is fine for a normal house with passive ventellation but not with an MVHR system, the h...
@caroline2000 It is usually quite simple to correct the installation. Firstly I would need some information. What is the make and model of your hea...
@helensq It is not a bad choice if it is done properly. Install thick screed under floor on the ground floor with pipe spacing of 100mm, no zoning ...
@dchilton As I said, if you are going to install a heat pump do it properly or you are going to be disappointed. If you do not upgrade your radiators,...
@dchilton hi, if your existing boiler was struggling, a new one will also struggle, and will probably be less efficient as you will be pushing high te...
@dchilton David, can i ask why you are installing a heat pump and a gas boiler?
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Latest Posts
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RE: How Accurate Is My DIY Heat Loss Calculation?
@editor Thanks Mars, I have been enjoying playing with ...
By kilgorexv , 3 hours ago
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New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless
I am feeling baffled and worried:We are having a an Aro...
By GutoFfowc , 5 hours ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
@rob-of-york Thank you, I’m thinking along these same l...
By Toodles , 8 hours ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 8 hours ago
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RE: Questions about A2A for heating as well as cooling
@donciccio I would suggest that you take a "fabric-fi...
By Rob of York , 9 hours ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
By Mars , 1 day 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 , 2 days 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 , 2 days 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 , 2 days ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 3 days ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 3 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 , 3 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 , 6 days ago



