Agile said:I think you need to take a wider view of the situation.
The Biasi boilers are sold at a very economic price and the manufacturers have to make their profit on the spare parts.
By ensuring you have to use their spare part they make their money. If they did not do that they would have to charge more for their boilers!
The pumps only fail because of dirt in the system so on a well installed system the pump does not need to be replaced. Few installers of cheaper boilers power flush the system because owners dont want to pay much to have it fitted so the pump has to be replaced after a few months. Thats the installers fault although atributable to the owner.
The same applies to car spares. The car is cheap but a new bumper is about £600 for a Mondeo for example.
Tony
I understand that. I think it would be fairer to charge up front than to build your business model around 'hidden costs' though...
I'm interested in your comment about dirt in the system... my plumber suggested I get a wireless thermostat as I don't have one at all, he said the boiler would run less and therefore not wear as quickly if I had a room stat.