Are condensing boilers over complicated and unreliable?
No. It’s fair to say that in the past some condensing boilers have been unreliable but these days boiler manufacturers make more condensing boilers than any other type and they simply would go out of business if this was still the case. The essential difference between a standard boiler and a condensing boiler is a larger heat exchanger, which is basically a large piece of aluminium or stainless steel. When the flue gases cool, water condenses inside the boiler and that needs to be drained away. The process isn’t overly complicated as long as the boiler is fitted properly. For boilers to be very efficient they require some fairly sophisticated controls and this is where problems are more likely to occur. However, most boilers, not just condensing ones, use electronic circuitry. There is no reason why a condensing boiler should be any less reliable than any other type of boiler. Just about every boiler that’s replaced now is a condensing one and they will reduce your fuel bills consider
