Bought a Frigadaire 5 ton AC/100.000 BTU central air/heat unit in Mar 09'. Unit installed on 31 march! PROBLEMS--AC OK but heater makes loud noise on start-up! Installer replaced blower motor thru nordyne but problem still there! Told me to insulate the closet where unit was. Did this but NO help--This problem STILL persists in this unit and the installer and nordyne ignore IT! I was told I would have to put up with it!! This problem has been present since day one with NO resolution! NOW a few months into summer 2 the AC freezes up--called installer and he says nothing is wrong--Ice was melted by the time he arrived--Think he didn't believe me! Charged $135 to tell me nothing was wrong! Now less than a month later the AC system quits cooling! Nothing wrong? Apparently the COILS popped a leak and all the freon (421) leaked out--BAD COILS--unit is ONLY 17 months old--HOW could the coils be BAD so soon!! Apparently this is a widespread problem with coils (told this by installer/contractor) Nordyne but ALL they will do is give you another of the suspect coils. YOU have to pay for everything else--Labor, Freon, etc, which in my case amounted to $500 to the AC man to replace the coil. NORDYNE should have to completely pay for this repair since THEIR equipment must have a design problem. The unit hasn't given a single season of ?worry? free performance!! DON'T BUY THIS PEICE OF JUNK--FIND OUT WHATS ON THE INSIDE BEFORE YOU BUY--MAKE SURE ITS NOT MADE BY NORDYNE!! ALL THEIR EQUIPMENT IS SUSPECT AND THERE IS NO WARANTEE--Just get another suspect piece to replace the certain bad one! GO with someone other than NORDYNE!!!