Any opinions on American Standard compared to Comfortmake furnaces? This is for new construction we are looking at two furnace/ ac systems for our project. The comfortmaker is a DLX 90 100,000. and 80,000. BTU. Single stage each with a 3 ton and the American Standard are 1000,000. and 60,000.00 with a 4 ton and 2 1/2 ton. 90% efficianty. also single stage. Both quotes include humidifiers and air cleaners. The cost is almost exact. All ducting will be insulated. This is for a Southern Michiagan home. Both are up flow furnaces. Thanks for any help you can give.