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Boiler confusion ?!?!

Posted by Neil Savage, on
I live in a 3 bedroom detached house. I have 11 radiators throughout and 3 toilets. I am getting confusing advice from quotes. Some quotes have said a combi boiler 30kw would be best and others state that a combi boiler would not be suffice and that I need a normal boiler. Also some have stated that I need to have thermostats on every radiator by law, others say I only need them in the bedroom. some have said that I need a new flu others have stated I don't. I have been quoted from £2000 to £4500. please help!
richard hall

richard hall

You don't need trvs on all rads but as heating engineers we are advice to install trv valves on them however that is called best practice and in reality you can actually put them in main rooms eg bedrooms and main living quarters this is call good practice and meets the energy efficiency criteria hope this helps
Jan Hui

Jan Hui

You can have a 30kw combi, but if 2 showers are operated at the same time from the combi they may not be hot enough. So you may need an electric shower in that case. Electric showers can get quite involved to fit as they require their own dedicated wire from the fuse board and isolator switch/pull cord fitted.
Iain McAlpine

Iain McAlpine

Hi Neil Your boiler would depend on your hot water usage, I take it you have a main bathroom, an en suite and a small toilet down stairs for visitors, if you have electric showers in the bathrooms the 30k combi would do, if you have thermostatic showers you have to think would a combi cope with someone running a bath and someone having a shower at the same time, some people go for a normal boiler and a water tank that gives you hot water at mains pressure (unvented domestic hot water tank, fast tank) as they can be called so look at the hot water the combi will produce ltrs per minute, as for the thermostatic valves this is a new one to me. Iain
Michael Tucker

Michael Tucker

Hello Neil, Best to get an on site survey/quotation done, this is a free service to you and you will get 3 quotes. Simply post your job onto rated people's site. You are not obliged to go with any of the quotes- but ever job that's posted is paid for by the relevant tradesmen.if they contact you that means they are interested in your job. If one of them are awarded the job then great news for you both. The tradesmen are paying rated people to give you advise effectively. This happens now more because of the system changes rated people gave made. ratedpeople.com Regards Michael
CHRISTOPHER STAMFORD

CHRISTOPHER STAMFORD

30 kW is sound and stats on all rads so you can control them and about 3000 to 4000 would be about right any probs just email me with anymore questions thanks Chris cjs
Dave Claringbould

Dave Claringbould

hi, yes you do need thermostatic valves on all rads,you havnt mentioned if you how many bathrooms/showers it really dependes on the water flow,you might need a megaflow tank,come back to me and I will give you free advise,bosch Worcester are the ones I would recommend been fitting these for years never had a problem,regards dave DC builders

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