From inside (document excerpt):
Product Data InfinityTM 96 Model 58MVB Deluxe 4-Way Multipoise Variable-Speed Condensing Gas Furnace Series 100 Input Rates: 40,000 thru 120,000 Btuh Comfort HeatTM technology, the ultimate in heating comfort. The Carrier InfinityTM 96 with ComfortHeatTM technology achieves the optimum combination of comfort and efficency. The InfinityTM 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, ComfortHeatTM 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 InfinityTM 96 uses up to 80% less power than single-capacity furnaces. In addition to providing ultimate comfort, the InfinityTM 96 has a sealed combustion system. This system brings combustion air to the furnace and vents flue gases outside the furnace in a safe manner. 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 InfinityTM 96’s outstanding performance. Carrier stands behind quality. We offer lifetime warranty protection* on the heat exchangers, the heart of the InfinityTM 96. The rest of the unit is backed by a limited 5-year warranty. The InfinityTM 96 is available in 6 heat/ airflow combinations. The unit has a 4-way multipoise design and can be installed in upflow, downflow, or Catalog No. 58MVB-1PD A05069 2005 Carrier Corporation horizontal positions covering up to 24 different applications. The InfinityTM 96 can be installed as a Non-Direct vent/1pipe or Direct vent/2-pipe. The versatile 4-way multipoise design in conjunction with variable speed makes the InfinityTM 96 is ideal for use with splitsystem cooling, including2-speed units. A Carrier electronic air cleaner, humidifier, ThermidistatTM, comfort ventilator, and Comfort ZoneTM II will provide yearround comfort and efficiency. Designed for durability, comfort, and reliability, the InfinityTM 96 is the ultimate in versatile, efficient comfort. Carrier Infinity® System — When the InfinityTM 96 variable-speed gas furnace is matched with the Infinity Control and an air conditioner or heat pump, you will experience the ultimate in ComfortHeatTM 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 onscreen, text-based service reminders and equipment malfunction alerts. For even greater comfort and convenience, match the InfinityTM 96 furnace 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. InfinityTM 96 FEATURES/ BENEFITS IdealHumidity — The IdealHumidity system actively controls both temperature and humidity in your home to provide the best comfort all year long. Other systems depend on heating or cooling to manage the moisture in the air. But, IdealHumidity gives you the right amount of humidity day and night, even in mild weather. No other manufacturer can do this! IdealHumidity saves energy, too. By keeping humidity under control, you can set your thermostat to stay comfortable and save energy–up to 20% off your cooling costs! ComfortHeatTM — On the coldest days of the year, the InfinityTM 96 Furnace has the capacity to heat your home. On moderate days when less heat is required, this furnace will regulate itself to a lower capacity — providing a comfortable home and minimizing operating costs. The patented algoritum adjusts the lowheat operating time to match the indoor conditions. 2 Reliable Heat Exchanger Design