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Last seen: May 17, 2026
@editor I ran the calculator for my 3.5kw with a run of 10m. It said 32mm PEX ID 26mm resulted in a pressure prop of 28Pa and this was looking good....
Are you saying the MLCP (aluminum core with inner and outer layers of polyethylene) is not the right material to be used for the water pipe run from t...
You might like to try cinergi.co.uk at Romsey. I am about use them to replace my Hitachi HP, they are also installing a Tesla battery for me. ...
Yes now looking like a Tesla Powerwall3. Not much difference in cost around £8500 for full house back up.
I am looking for full house back up. I don't thing this product has this functionality. Please let me know if I am wrong.
The negative reviews are a worry. I would note that some are from Australia. I have been looking at Tesla as well. I am confident in my installer b...
I will send you a PM.
Are you refering to the builder who installed the system or someone from Hitachi to come and fix issues/install new SW?
I am in a similar situation as you. Have an oversized heat pump 7KW in a 2KW at -2C property with UFH. I have selected a Vaillant 3.5KW as my repla...
I also have a Hitachi split system similar to yours, details in the tag line. I also had a lot of problems with cycling, the principal reason being t...
Latest Posts
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RE: Advice on Vaillant Sensocomfort
@jamespa Thanks, that’s useful. It also seems the ...
By Batpred , 6 hours ago
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RE: Debugging my legionella immersion heater
I notice this (66 is rather hot) with my legionella cyc...
By JamesPa , 12 hours ago
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RE: DIY Heat Pump Installations: Navigating Legal and Regulatory Hurdles
@transparent I thought you would spot that wind turbine...
By Batpred , 12 hours ago
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UK warm homes plan - how can it be delivered?
@editor Sobering thoughts on your article on the workfo...
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RE: Setback savings - fact or fiction?
You are right to be intrigued by it IMHO. SOFAIK it is...
By JamesPa , 20 hours ago
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RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@swwils there is no logic to oversizing a heat pump. It...
By AgentGeorge , 23 hours ago
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RE: Vaillant Sensocomfort Time
Thank youy for the pointer. I think I have managed to ...
By ispookie666 , 2 days ago
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RE: Forum updates, announcements & issues
I have been doing a lot of work on the site lately and ...
By Mars , 2 days ago
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@majordennisbloodnok good advice, thanks for that.
By David999 , 2 days ago
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RE: My Grant R290 9kW Heat Pump Installation
I am following this thread with great interest and than...
By TaffontheTaff , 2 days ago
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RE: Sizing an ASHP; Heat loss and kW
You can't measure heat loss with a website. But you ca...
By JamesPa , 2 days ago
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RE: Estimating true heat loss from twelve months of consumption data
@ian33a — I have a sort of residual interest in this pr...
By cathodeRay , 3 days ago
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Hi, Thank you. So its a Daikin Altherma 3M...
By Lbart68 , 3 days ago
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I have a Contactum CU. Would the below RCBO (descriptio...
By Batpred , 3 days ago
