Coleman furnaces overall are rated 27th out of 77 brands at Furnace Compare, with just 34 out of 92 reviewers giving the model high marks. The Coleman Echelon gas furnace received a four-star overall rating at Gas Furnace Guide; however, the same model received only two stars from About.com.
Affordable, with excellent fuel efficiency, the Coleman Echelon received high marks for reliability, operating cost, features and warranty/support, according to Gas Furnace Guide. Also noted was the gradual increase in heating from the furnace over a period of 15 minutes, due to its modulating feature. The unit received a top rating for its ability to keep a poorly-insulated house warm. The furnace received two stars from About.com because of problems with the gas valve getting stuck and the condensation collection box cracking. Coleman has since changed the box to a softer, less brittle black plastic. The model was also cited for being too noisy.