Glad you raised this question, because tomorrow we have a heating engineer calling to provide a quote for a new boiler and other items, due to a series of boiler breakdown's over the past six months, which as cost a total of nearly £680 in repairs, and the boiler as packed up again two weeks ago.
The original central heating was installed about 20 plus years ago, and about 8 years ago, we had a new Glow Worm boiler, new thermostats etc. but as I said, over the past six months the system as become a burden, financial and otherwise.
Its been suggested that we have a Worcester/Bosch combi at between estimated £1200 to £1500. Apparently for this price, there are three warranty options of 3/5 or 7 years, providing you have a service every twelve months.
We are now in the hands of the engineer tomorrow as to the final outcome.