Heating inputs range from 50,000 to 125,000 Btuh, including a high-airflow 100,000-Btuh model for five-ton applications. LP gas conversion kits are available ... efficiency rating of up to 92 percent ...

The low-profile, Quiet-Comfort™ IIS 90 gas furnace offers a 90% efficiency rating ... or horizontal-right configurations. Heil Heating & Cooling Products, a subsidiary of International Comfort ...