Gas Furnace

Winter after winter, our single-stage XT80 high-efficiency gas furnaces will keep your home warm with a blower motor designed for consistent airflow and high efficiency, and that means consistent comfort for your family.

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AFUE (Heating Efficiency): 80


The energy savings mode automatically adjusts your thermostat to save both energy and money.

Energy Star:

Dependable Warmth for Your Home

Efficient performance

The XT80 is rated with up to 80% AFUE.

Comfortable, even heating

High-efficiency blower motor provides a consistent flow of warm, comfortable air, while operating quietly and efficiently.

Durable construction

Materials for all components are tested again and again for long-lasting performance and reliability.

Cleaner, healthier indoor air

Add Trane CleanEffects™ to your system for advanced air filtration that removes more dust, pollen and other irritants from conditioned air for a cleaner, healthier, more comfortable home.

Quick Comparison


40 Cost
80 Efficiency


40 Cost
80 Efficiency


20 Cost
80 Efficiency

Every Trane furnace is packed with high-quality components. Each helps ensure that time after time, your unit will provide total comfort your family can rely on. The XT80 includes:

High-efficiency blower motor

Self-diagnostic microelectronic controller

Durable silicon nitride hot surface igniter

Multi-port, in-shot burners

One-piece heat exchanger with no welds

Pre-painted galvanized steel cabinet

Upflow models have hinged blower doors, easy-open door latches

Insulated heavy steel cabinet for quiet operation

XT80 high-efficiency upflow/horizontal left furnace models

Model Height (in.) Width (in.) Depth (in.) Cooling CFM (Nom. Tons) AFUE
TUD1A040A9H21B 40 14.5 28 2.0 80
TUD1B060A9H31B 40 17.5 28 3.0 80
TUD1B080A9H31B 40 17.5 28 3.0 80
TUD1C080A9H41B 40 21.0 28 4.0 80
TUD1B100A9H31B 40 17.5 28 3.0 80
TUD1C100A9H51B 40 21.0 28 5.0 80
TUD1D120A9H51B 40 24.5 28 5.0 80
TUD1D140A9H51B 40 24.5 28 5.0 80

XT80 high-efficiency downflow/horizontal right furnace models

Model Height (in.) Width (in.) Depth (in.) Cooling CFM (Nom. Tons) AFUE
TDD1B060A9H31B 40 17.5 28 3.0 80
TDD1B080A9H31B 40 17.5 28 3.0 80
TDD1C100A9H51B 40 21.0 28 5.0 80
TDD1D120A9H51B 40 24.5 28 5.0 80

Trane XT80 Registered Limited Warranty Details

20 year limited warranty on heat exchanger.

10-year limited warranty on internal functional parts.

If the product is not registered within 60 days of installation, Trane’s Base Limited Warranty terms will apply.

An option to purchase transferability of your Registered Limited Warranty is available.

Optional Extended Warranties are available. Extended Warranties can pay for labor and other costs not covered by manufacturer's limited warranty.

Ask your dealer for full warranty information at time of purchase. Warranties are for residential use only, some exclusions may apply.

Register within 60 days of installation to activate warranty. Residential use only. Some exclusions may apply. Call 1-800-554-6413 or Register Online.