Dave Jewell
Hi David I'd go with the Worcester 550cdi, 25 ltrs per minute, floor standing but great piece of kit
Which boiler
Posted by David Thompson, on
I'm renovating my house (3 bed/2 bath) and will be installing a full new plumbing/heating system. The house is supplied with natural gas. Downstairs will have piped underfloor heating (using around 7kW output) and upstairs will have 5 medium sized radiators. The water flow rate at the mains is really high (47L/min). My wife has requested that the shower be really powerful. I will install a shower head which allows a high flow rate, and run the DHW pipes in 22mm, but could you advise me on the best boiler for the job of providing a large flow of hot water. There is currently only 2 of us living at the property and we don't want to install a how water cylinder. We just want a combi which will provide a fully 'drenching' shower. I normally install vaillant or worcesters so would prefer one of those. I was thinking about the Vaillant 938 which can provide 20L/min, but once the stored hot water is used this will drop, and this won't take long if I have a powerful shower. Can you advise?
Adrian Taverna
Hi David . Interesting post ! . Having many years of experience in this field and your conundrum in particular! Combi boilers for sure are improving all the time. I have always been a fan of pressurised cylinders and heat only boilers as I can think of more pros than cons of combi boilers . Is the underfloor heating wet or electric? Be careful with the deluge shower head running a combi as it could potentially lead to disappointment. I strongly suggest you a "whole house consultation " with a professional before going ahead . Kind regards. Adrian from A.T.Plumbing and Heating company
