
Keep cozy when it’s cold outside with a Tempstar high-efficiency gas furnace. Units with multi-stage operation and multi-speed indoor fan can provide better levels of temperature control for your comfort. The multi-speed fan also means you’ll enjoy better summer dehumidification and a possible SEER boost from your cooling unit. The ENERGY STAR® qualification on select models assures you of energy-saving performance year after year.
Best Comfort/Efficiency

F9MAE
- Up to 98% AFUE
- Modulating heating operation from 40% to 100%
- Compatible with Observer® control
- Variable speed blower motor
- Quiet operation
- 10 Year No Hassle Replacement™ Limited Warranty
- Limited Lifetime Heat Exchanger Warranty
- Up to 10 Year Part Warranty
Better

F9MVE
- Up to 96% AFUE
- Two-stage heating
- Efficient ECM blower motor
- Compatible with Observer® control
- 10 Year no Hassle Replacement™ Warranty
- Lifetime Limited Heat Exchanger Warranty
- Up to 10 Year Part Warranty
Good

F9MXT
- Up to 96% AFUE
- Two-stage heating
- Constant torque blower motor
- 5 Year No Hassle Replacement™ Warranty
- Lifetime Limited Heat Exchanger Warranty
- Up to 10 Year Part Warranty
Basic

N9MSE
- Up to 95.5% AFUE
- Single-stage heating
- PSC blower motor
- Up to 10 Year Part Warranty
- 20 Year Limited Heat Exchanger Warranty