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I cannot THANK YOU enough. Would I be correct in saying the btu/h watt output quoted by the manufacturer of any radiator is the maximum amount of heat output? If the height, width, length of a room, plus the amount of outside walls, the roofing insulation, the size of window, whether it had...

Could anyone offer advise and guidance on where? to find such independant heating engineers that are GS Registered and specialize in fault finding and diagnostic reports, and what the approx cost would be for such written report? Is there a list of these specialists with a weblink?

Thank You!! :lol:

Sorry but I 'am fick! If 15mm pipe is used, do all the radiators have to be balanced? If 22mm copper pipe is used, no need to balance radiators? Distance from combi upstairs is approx 10metres to downstairs T , total of downstairs rads approx 38,000 btu's. Should 22mm be used to carry...

If a combi boiler is fitted upstairs and the flow and return from boiler are in 22mm for the first metre, reducing down to 15mm would it affect the heating of the rads downstairs? Is the measure of 15mm to carry 18,000 btu's 22mm to carry 55,000 btus and 1inch to carry 100,000 btu's correct...

Is it ok to use 22mm for the first metre and then reduce down to 15mm all in copper pipe? Does the measure of 15mm for carrying 18,000 btu's 22mm for carrying 55,000 btu's and 1inch for carrying 100,000 btu's. Is this right? If the radiators downstairs total approx 38,000 btu's and the combi...

HELP!! Can anyone advise and confirm if 22mm copper pipe is compulsary to use for the flow and return from a combi boiler for the heating system, would be grateful for any help regarding this please

Thank you very much, I have checked the gas safe register from your link and this person only has a four digit gas safe registeration number, the rest appear to have six digit numbers, with a couple having five digit numbers. Does it depend on how long one has been registered, as to how many...

Hi, Firstly thank you very much to everyone that has taken time to help and post replies. The engineer that fitted the new rads (seven in total) with two additional rads added to the system. Is a gas safe, corgi registered Heating Engineer and Plumber. The boiler is a worcester bosch 24cdi...

Hi Again, Thank you very very much for your reply, I 'am in Cheshire. This job was done 4 week's ago, I complained on the second day before they finished at noon, that the new rads were not hot, two days later the boiler got very very hot, the pressure dropped to one digit off zero and the...

Hi, No it wasn't a DIY job, the experianced professional Heating Engineers don't know what is wrong with the boiler, they DO know that there wasn't a problem with the boiler when they installed the rads, they DO know that there is a problem with the boiler now, they also know they didn't cause...

Can anyone help? have recently moved to a property with a Worcester Combi Boiler, everything working fine until new radiators fitted with additional two new radiators to the system. Now have a combination of some old radiators and new D/C radiators, as soon as the job finished the new rads...