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Model Family |
987M |
926T |
912S |
310AAV |
Annual Fuel Utilization Efficiency |
Up to 98.3% AFUE |
Up to 96.5% AFUE |
Up to 92.1% AFUE |
80% AFUE |
Energy Star Rated |
Energy Star Rated |
Energy Star Rated |
No |
No |
Blower Motor |
Variable-speed full-featured ECM |
Variable speed, high-efficiency ECM |
Fixed-speed ECM |
Fixed speed |
Gas Valve |
Modulating |
Two-stage |
Single-stage |
Single-stage |
Fan Heating Operation |
Modulating |
Two-stage operation |
– |
Single-stage |
Factory Warranty Parts |
10-year parts limited warranty upon registration. |
10-year parts limited warranty upon registration. |
10-year parts limited warranty when properly registered. |
10yr limited warranty. |
Heat Exchanger Warranty |
Lifetime limited warranty |
Lifetime limited warranty |
Heat exchanger warranty: Primary – Lifetime / Secondary – 20 yr. Limited |
20yr limited warranty |
Sound Level |
QuieTech™ |
QuieTech™ |
QuieTech™ |
QuieTech™ |
Manufacturer’s Stated Benefits |
- Precise gas modulation with movements in 1% increments
- Variable-speed blower allows unit to operate at lower speeds up to 90% of the time, ensuring consistent airflow and temperature.
- Perfect HeatTMtechnology monitors changing conditions to adjust heating
- Perfect HumidityTMtechnology removes up to 127% more moisture than a standard furnace
- Fan On PlusTMtechnology
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- Enjoy the ultra-quiet performance and even-temperature comfort of variable speed air delivery. It’s also the best choice for imp
- Perfect Heat™ technology means consistent comfort by adjusting system operation to changing conditions
- Perfect Humidity™ technology capability with appropriate control and equipment removes more moisture than a standard furna
- Fan On Plus™ lets you choose the speed of continuous fan operation with a compatible control
- Insulated cabinet for quieter operation
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- Fan On Plus™ technology lets you choose the speed of continuous fan operation with a compatible control
- PerfectLight™ hot surface igniter eliminates gas-wasting pilot light
- Insulated cabinet for quieter operation
- Allows gas furnace/heat pump system combinations for best heating efficiences
- Filter cabinet
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- Pilot-freePerfectLight™ ignition
- Insulated cabinet for quieter operation
- Hybrid Heat® system capable
- Filter cabinet
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