one of quietest boilers are vaillants think they have won awards for it, also if registered through vaillant then you get 7 years free warranty or pay extra for 10 years but the caveat is you need to have it serviced every year to keep th ewarranty in place
thanks i looked at these and while good quality they seem expensive for install and purchase - as i understand to get more than 2 yrs warranty they need to be installed by a vaillant "advance installer"(?)
Worcester Bosch Greenstar by Accredited installer, with primary filter and controller, 10 year warranty, 0% finance for 12 months, but same with warranty tied to servicing, but worcester aftersales service is top notch