Last weekend I got my 45K BTU Mr Heater garage heater installed. It is similar to the Hot Dawg. Anyway, it is mounted to the ceiling on threaded rod and above that ceiling is living space However, whenever it comes on, it is extremely noisy upstairs. Because of that, I have started looking at isolation mounts. Most of the isolation mounts are pretty expensive, however I did find a system from a company called KNC Homeshop that was pretty reasonable. The only problem with it is that their system would require that I hang the heater from chains instead of threaded rod. Can anyone think of a reason that I would not want to use chains to hang the heater? Thanks