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Variable speed scorched air furnaces
I was wondering what other wallies thought of the variable speed forced air furnaces ? Are they really worth it ? Seeing that I do exclusively commercial and industrial HVAC (and work for one of the big three manufacturers) I only seem to hear horror stories. I'd think that the problems with ECM motors have been solved. I was just planning on installing a V.S. system for one friend, when I hear that another friend was just quoted $1600 for a fan board and squirrel cage replacement on a 3 yr old system. Wouldn't a 3 yr old residential systems' fan board and squirrel cage still be covered by warranty ? Any insight / thoughts would be appreciated.