Has anyone had any experience with C&D Associates heaters? Purchased a new C&D Heater in 2009 for our 58P Baron. This thing has not worked properly since it was installed. It will scare the H*****LL out of you with all the noice it makes in the nose of the aircraft. It seems to be worse above 15000 ft. The shop that installed it, has attempted 5 different times to fix. We then carried to another shop and he has attempted about the same numer of times. We have spent more money attempting to repaire then what we paid origianlly for the heater new!!!