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Preferred 80% 2 Stage Gas Furnace

821T

AFUE Efficiency: 80%

Gas Valve Type: Two-Stage

Features

Low NOx model designed to meet California regulations.
Quiet performance and even-temperature comfort from variable 25-speed air delivery
Two-stage operation allows longer, more even heating cycles on low stage
InteliSense technology allows for critical equipment performance data to be gathered and shared with your dealer who can reassure you that your system is running properly. Simply grant permissions for data sharing and watch an improved customer experience come to life. Learn more.
Perfect Heat™ technology means consistent comfort by adjusting system operation to changing conditions
Fan On Plus™ technology lets you choose the speed of continuous fan operation with a compatible control
20-year limited warranty on heat exchanger1
10-year parts limited warranty upon timely registration2
120-Year Heat Exchanger Limited Warranty. When used in an owner-occupied residence. See warranty certificate for details.

2To the original owner, when product is used in an owner-occupied residence, a 10-year parts limited warranty upon timely registration of your new equipment. Warranty period is 5 years if not registered within 90 days. Jurisdictions where warranty benefits cannot be conditioned on registration will automatically receive a 10-year parts limited warranty. See warranty certificate for complete details.