i use trane in my rentals. they very seldom break,and last a good 20
years+ .i like the 10 years parts/labor warranty also..i would seriously
look at a heat pump as nat gas is going to continue to go up. up north
here, im seeing heat pumps go in with a line they put in a 100 ft hole
in the ground. these things really heat cheep. lucas
http://www.minibite.com/america/malone.htm