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View Full Version : Combi boiler, hot water keeps going hot and cold while running


brokdown
Oct 19, 2011, 03:20 AM
Have had an engineer out who says that the system needs flushing out at a cost of six hundred pounds, would flushing out system cure this problem,

JonesHVAC
Oct 19, 2011, 08:23 AM
What model is it?

JonesHVAC
Oct 19, 2011, 08:26 AM
Also, sedement sometimes can build up on the elements preventing them from heating properly. I usually flush my customers who have instant systems every 2 years.