Our boiler was installed circa 1992. So I reckon a new one would more efficient.
But which make? Worcester. Warmflow etc.
Also which design? Condenser? Which I have been told don't last as long as a " Systems" boiler?
Had perfectly good but old fashioned boiler. Landlord at the time decided on new combi boiler. Took out old one (From much loved airing cupboard), put new one in my larder. Result, no airing cupboard, no larder (tiny flat, not much storage) and a boiler which requires a plumber at least every 6 months.
October's Which? had a report..."Best and worst boiler brands". Best was Worcester, then Vaillant and Viessmann.....at the bottom were Baxi, Ideal and Vokera.
Proposed boiler will be oil fired and have no intention of getting rid of hot water cylinder - would miss it too much. Sorry for sounding stupid but what is a combined boiler? Only heard of condenser.
A combination boiler is essentially a modern version of the old Ascot hot water provider that sat next to the sink, plus the capability of running the CH. So it has no DHW storage and heats it as required. The downside is that many combis cannot provide both in parallel.
A condensing boiler type is one that extracts more of the available heat from the gas or oil flue vapours.
A combi boiler both heats water and acts as the central heating boiler. There is no need for either a hot water cylinder or a storage tank in the loft as it heats water as and when you need it - there's no need to heat a full cylinder. Also, hot water to bath/shower and taps is at mains pressure.