Hi Tommygee,
Although I suggested the Remenha Avanta 35c to you, I do so because the output to central heating is actually 30kW, whilst having 35kW to hot water.
Speak to one or two Broag Remeha installers in your area if you can as you're probably going to need one anyway.
BlueLightning
Hi Razi,
IMHO the Worcester Bosch product is better than Vaillant...you can get a 10 year warranty on the primary heat exchanger.
Worcester Bosch have a boiler Greenstar 30Si which might suit you better than the 28i Junior you mentioned. It has the same output to central heating but a 30kW...
I agree with gas4u. Why don't you consider the Worcester Bosch 30Si.
This has a 30kW to HW and a 24kW to CH (circa 82k Btu's). It'll cost less than the 30CDi by a good margin and is better suited to your heating output than either the 30CDi or 37CDi
Sounds like you are looking for around a 35kW boiler to give you a decent flow of around 14l/min @ 35deg rise.
IMHO the Broag Remeha 35c fits the bill perfectly with 14l/min and a stainless steel heat exchanger (5 year warranty on this part). Its well manufactured and has quality components...