We have used Lennox rooftop units for many years. When my grandfather opened Lehman’s in 1930, one of the manufacturers he bought furnaces from was Lennox and so John and I kind of grew up with that brand name in our household. My dad sold Lennox and, to us, that was the best equipment there was in the residential and light commercial market so we have a long history with not only the brand but many of the people who were part of that company through the 1950s all the way up to the ‘90’s. Now, since we no longer do residential we still use their rooftops and some of their splits when they are appropriate on projects. They have one of the best rooftop units made in my opinion. Lennox also has a great web site that allows us to order parts on line and even track orders. We can also file any warranty claim on line, get submittals, and almost any technical or sales literature we need without having to talk to anyone. Here in Indianapolis, we are fortunate to have a large Lennox stocking warehouse to draw from and we can get product almost instantly if we need it.