Efficiency ratings from 80 to over 95 percent. Maximum heat – minimum fuel usage. Single-stage, two-stage and a two-stage/variable speed Comfort-R furnaces.
The Freedom 90 is a furnace series within American Standard’s Silver SI product line. This single speed furnace offers up to 92 percent AFUE and is promoted by the manufacturer for its quiet, smooth operation.
Available in both upflow and downflow configurations, the Freedom 90 has 11 models in a variety of sizes, with capacity ranging from 2 to 5 tons. The heating capacity of this unit is as high as 113,000 BTU.
Additional features of this model include: a multi-speed blower, heavy insulated steel cabinets, an aluminized steel primary heat exchanger and a stainless steel secondary heat exchanger. The system also offers the option of using 100 percent outside air for combustion to help increase the unit’s longevity.