Complete nonsense Daz the burner I had before lasted 10 years and was putting out water at over 50 degrees,my only problem with the heater was the charging side of things, it needed to be properly split and mains hookup changed which grippa have now done for me late last year. When the burner needs changing it will smoke when working like billyo,you won’t need to worry about anything m8 for a few years yet,they may say you need to pay for the service to keep the warranty on it though I’ve replaced every part on mine last year it’s now as new as yours 😂