Infinity 90% Gas Furnaces Consumer Brochure
Achieve up to 98.5% AFUE, helping reduce heating bills with premium efficiency while lessening environmental impact.
Infinity® 98 Gas Furnace
59MN7
Our most advanced, energy-efficient furnace with unparalleled comfort and humidity control.
Overview
The Infinity® 98 Gas Furnace with Greenspeed® Intelligence represents the pinnacle of heating innovation. With an impressive AFUE rating of up to 98.5%, it combines exceptional energy efficiency with precise comfort control. Its modulating gas valve, paired with an Infinity® System Control, allows it to adjust in 1% increments to deliver exactly the heat your home needs. This advanced technology ensures quieter operation, tighter temperature regulation, and reduced energy consumption. The variable-speed blower also improves air conditioning and summer dehumidification, making it a year-round comfort leader.
- ENERGY STAR® Certified
Features
Greenspeed Intelligence technology paired with Comfort Heat Technology® ensures precise temperature adjustments, minimizing swings and enhancing your comfort.
The Ideal Humidity System™ maintains appropriate indoor humidity levels, boosting comfort and minimizing excess humidity when paired with an Infinity outdoor unit.
Fully insulated cabinet design ensures ultra-quiet operation, creating a peaceful home ambiance.
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
Up to 98.5% AFUEGas Valve Technology
ModulatingBlower Motor Type
Variable-speedFuel Type
Natural gasSize
Available in various sizes to accommodate most homesExperience energy savings and consistent comfort with Carrier’s Infinity 98 Furnace, designed to elevate your home’s environment year-round.
Works great with
Customer Reviews
4.4 /5
4.4 rating of Reviews (329)
Okay
January 10, 2026
Works as specified.
Verified purchase
Not very happy ,sure isn't like the one I had before
January 6, 2026
Does not have battery back up when power goes out,does not warn when wi fi goes down ,for what I thought i was getting ,to much tec,noisier than pervious one
Reliability
January 3, 2026
Service from dealer is excellent and product is very good
Verified purchase
Top of the line
January 2, 2026
Confidence in Carrier. I believe that I purchased the best product on the market.
Verified purchase
Class action lawsuit buyback program
December 30, 2025
Previous system failed due to glaring design flaw. That system had a lifetime warranty on both parts and labor, but Carrier would reimburse dealers a fraction of the cost required to perform the repair making the warranty useless. This resulted in a class action lawsuit that resulted in the buy back program. The details of this buy back seem to be somewhat murky since I could only find one dealer in my area who had any knowledge of this program. I had multiple dealers recommended by Carrier who did not know about the buy back program who told me that they could find no information about it when contacting Carrier. The class action lawsuit was over the secondary heat exchanger. The design of the exchanger as explained to me by the Carrier reps was steel heat exchanger that had a plastic cladding. The TCE (Thermal Coefficient of Expansion) for steel and plastic are vastly different, which means this design was doomed to fail when the plastic cladding inevitably debonded from the steel part of the heat exchanger. The lifetime warranty played a large role in our decision to purchase the previous Carrier system and we were very disappointed that Carrier failed to honor that warranty. Even with the buy back program we had seen a lot of money for the replacement system, we have zero faith in the warranty on the new system. The new system has a higher level of integration which means repairs will be more expensive and the variable burner is new technology which will also be expensive to replace if/when it fails. The installation was a nightmare, it took a very long time we were without heat for over a month in the winter and the installation still isn’t right. This is a high efficiency unit which is supposed to burn outside air, but since all the Carrier dealers in our area do not have insurance for their techs to be able to go on the roof, we were forced to reduce the efficiency of the furnace by burning inside air. The other issue just discovered at a filter change is that when the new furnace was installed, the A/C coils above it was not installed correctly causing condensed water to drip on the filter. If we had to do this again we’d definitely go with a std efficiency system for easier installation and lower cost and we would have to consider other brands as well. In this climate the higher efficiency does not make up the increased cost of the furnace.
Verified purchase
carrier total SYS
December 22, 2025
The only thing I have gained as a new carrier customer is noise level/comfort is lower than old trane system. Electric use on the heat pump is sightly higher than old system.
Documents
Brochure
Carrier Gas Furnace Comparison Flyer
Owner's Manual
Condensing Gas Furnace Owner's Manual
Chaudière à condensation à gaz
Warranty Card
Carrier Garantie limitée pour chaudière à gaz à condensation avec échangeur thermique secondaire à tube à ailettes
Limited Warranty for Condensing Gas Furnace with Tube and Fin Secondary Heat Exchanger
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).