Infinity® 80 Gas Furnace
58TN
Reliable efficiency and enhanced comfort for year-round home heating.
The Infinity 80 Gas Furnace is a reliable solution offering 80% AFUE. This furnace features two-stage gas valve technology, smart fan control, and Comfort Heat Technology®, ensuring consistent warmth and quieter operation. Paired with Carrier’s Ideal Humidity System™, it elevates home comfort by managing both temperatures and moisture levels more precisely. Designed with Carrier’s proven craftsmanship, this furnace ensures dependable comfort and satisfaction for years to come.
Features
Smart features such as Comfort Heat Technology continuously adapt to keep temperatures steady while reducing airflow interruptions, offering premium home comfort.
The Ideal Humidity System™ works seamlessly with compatible Carrier equipment to regulate indoor humidity levels, enhancing comfort throughout the year.
A fully insulated cabinet minimizes operational noise, creating quieter and more peaceful indoor spaces.
Experience peace of mind with Carrier's Consumer Choice Warranty. Upon timely registration, on eligible equipment select either a 10-year parts only limited warranty or a 5-year parts, plus a 3-year labor limited warranty.¹ Lifetime heat exchanger limited warranty upon timely registration.²
At a glance
Heating Efficiency
80% AFUEGas Valve Technology
Two-stageBlower Motor Type
Variable-speedFuel Type
Natural gas (optional propane conversion kit available)Size
Available in various sizes to accommodate most homesEnjoy comfort, smart features, and reliability with the Infinity 80 Gas Furnace.
Works great with
Customer Reviews
4.5 /5
4.5 rating of Reviews (331)
Pretty good
May 22, 2026
App is too slow to update current heat and setting
Heater does not turn on when the desired temp is entered on thermostat
May 22, 2026
On 8/11/25, my new heater unit was installed. But, the heat does not turn on when the desired temp is manually increased to a setting 1-2 degrees above the current room temp. Only when temp setting is 3+ degrees higher, than room temp, will the heat turn on. The owner’s manual says, When the room temperature drops below the temperature selected on the thermostat, the furnace will switch on automatically. When the room temperature reaches the setting selected on the thermostat, the furnace will be automatically switched off. Technician came out and said that the thermostat has 2 temperatures: the actual temp and the displayed temp. The displayed temp was reading 2 degrees low, so when the display read 68°, it was really 70°, so if I set the temp to be 70°, nothing would happen (since the house was really already at 70°). Tech had to adjust the thermostat display reading by +2°. This is very confusing and does NOT follow the owner’s manual.
Connectivity not good
May 17, 2026
Won’t stay connected and won’t hold scheduled temp overnight
Furnace review
April 28, 2026
No issues with heater at all
CYPRESS TEXAS
April 27, 2026
I was looking for a complete system, that had energy saving, with performance, warranty .
Unexpected Lack of Quality
April 22, 2026
2 years and things still not totally right. Replaced a 20year old unit that was leaking but see no difference in this Brand new unit as it relates to performance.
Documents
Brochure
Infinity 80% Gas Furnaces Consumer Brochure
Carrier Gas Furnace Comparison Flyer
Owner's Manual
80%, Induced Combustion, Gas Furnace, Owner's Manual
Warranty Card
Carrier Limited Warranty for Non-Condensing Gas Furnace
California residents please see Proposition 65
Legal disclaimer
1. To the original owner on eligible equipment for eligible residential applications. 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, which can be changed to the 5-year parts, plus a 3-year labor option on eligible equipment within the first 90 days after installation. The 5-year parts, plus 3-year labor warranty option is available only if the installing dealer/contractor has elected to participate in the Consumer Choice warranty program and has accepted the Consumer Choice dealer terms and conditions.
2. To the original owner on eligible equipment for eligible residential applications. Lifetime heat exchanger parts limited warranty period is 20 years if not registered within 90 days. Jurisdictions where warranty benefits cannot be conditioned on registration will automatically receive a lifetime heat exchanger parts limited warranty. See warranty certificate for details.
This furnace does not comply with SCAQMD Rule 1111 or SJVAPCD Rule 4905, which places a NOx emission limit of 14 ng/J. Therefore, this unit is not eligible to be installed in the South Coast Air Quality Management District (SCAQMD) nor the San Joaquin Valley Air Pollution Control District (SJVAPCD).