Best boiler cover: from under £3/month, compare to save – MSE The majority of central heating claims are down to a broken boiler, but if the problem is outside the 'white box', this sort of cover won't help. Boiler and central heating cover. The same as above, plus cover if, for example, pipes, radiators or central-heating pumps break. Boiler, heating, plumbing, drains and home electrics cover.