Neither Trane nor Carrier is considered better than the other, since both brands charge nearly the same price for standard models. Furthermore, each model has an annual fuel utilization efficiency rating over 90 percent. The AFUE measures an appliance's efficiency in converting fuel energy to heat during the year.
Consumer Reports indicates that, while Trane gas central furnaces costs about $3,000 for a standard model, Carrier furnaces of the same type cost about $2,800, as of 2014. In addition, Carrier markets units with the Energy Star symbol for increased fuel efficiency. Both manufacturers lead the furnace industry and produce models that cut the costs of heating and air conditioning a home.