From inside (document excerpt):
Product Data InfinityTM 96 Model 58MVP Deluxe 4-Way Multipoise Direct-Vent Variable-Speed Deluxe Condensing Gas Furnace Series 170 Input Capacities: 40,000 thru 120,000 Btuh Comfort HeatTM technology, the ultimate in heating comfort. The Carrier Infinity 96 with ComfortHeat technology achieves the optimum combination of comfort and efficency. The Infinity 96 achieves industryleading ultra-high efficiency at up to 96.6 percent Annual Fuel Utilization Efficiency (AFUE).
Efficient performance is enhanced through the variable-speed design. To maintain ideal comfort, ComfortHeat technology automatically adjusts the heating level, maximizing the use of low heating levels that produce near silent furnace operation while meeting the exact heating needs. This unit is designed to keep the indoor temperature within 1 degree of the thermostat setpoint. Because it operates in low heat most of the time, the Infinity 96 uses up to 80% less power than single-capacity furnaces. In addition to providing ultimate comfort, the Infinity 96 has a sealed combustion system. This system brings combustion air from outdoors to the furnace and vents flue gases safely outside the home. Because it is sealed, operational noise is minimal. A sealed combustion system also means fewer cold drafts and less air infiltration. Quality materials are the key behind the Infinity 96’s outstanding performance. Carrier stands behind quality. We offer lifetime warranty protection* on the heat exchangers, the heart of the Infinity 96. The rest of the unit is backed by a limited 5-year warranty. The Infinity 96 is available in 6 heat/airflow combinations. The unit has a 4-way multipoise design and can 2004 Carrier Corporation Form 58MVP-11PD be installed in upflow, downflow, or horizontal positions covering up to 24 different applications. The versatile 4-way multipoise design in conjunction with variable speed makes the Infinity 96 is ideal for use with split-system cooling, including 2-speed units. A Carrier electronic air cleaner, humidifier, ThermidistatTM, comfort ventilator, and Comfort ZoneTM II will provide year-round comfort and efficiency. Designed for durability, comfort, and reliability, the Infinity 96 is the ultimate in versatile, efficient comfort. Carrier Infinity® System — When the Infinity 96 variable-speed gas furnace is matched with the Infinity Control and an air conditioner or heat pump, you will experience the ulitmate in ComfortHeat and Ideal Humidity through unparalleled control of temperature, humidity, indoor air quality, and zoning. The Carrier Infinity System also provides unprecedented ease of use through on-screen, textbased service reminders and equipment malfunction alerts. For even greater comfort and convenience, match the Infinity 96 furnance with an Infinity air conditioner or heat pump. This will create a fully communicating system, requiring only 4 thermostat wires between system components, and troubleshooting can even be done from the outdoor unit without entering the home. Optional remote access through telephone or Internet is also available when combined with a remote connectivity kit. Infinity 96 FEATURES/ BENEFITS ComfortHeat — On the coldest days of the year, the Infinity 96 Furnace has the capacity to heat your home.