Carrier Infinity® Series Greenspeed® 98 – 59MN7 Review

Carrier Infinity Greenspeed 98 – 59MN7 Review

The Carrier Infinity Greenspeed 98 – 59MN7 represents the top tier of Carrier’s furnace lineup. Designed with Carrier’s exclusive Greenspeed® Intelligence technology, this model automatically fine-tunes its performance to deliver optimal heating comfort and maximum energy efficiency. The result is exceptional climate control and reduced energy costs throughout the heating season.

Choosing the Infinity 98 means investing in a premium heating system that delivers outstanding comfort, quiet operation, and long-term reliability. However, Carrier furnaces are among the higher-priced options in Canada, so it’s wise to plan your budget accordingly.

This review covers all the essential details of the Infinity 98 – including key features, performance specs, efficiency ratings, warranty information, pricing, and comparisons with other Carrier models — to help you decide if it’s the right choice for your home.

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About the Infinity 98 – 59MN7

Average Installed Price: $7,500 – $8,100

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Top Features

• Exceptional energy efficiency for reduced heating costs

• Secondary heat exchanger minimizes heat loss and fuel waste

• Reliable hot surface ignition system eliminates pilot light gas waste

• Eligible for many government and utility rebates

• Compatible with multiple Carrier technologies and comfort features

• Ultra-quiet performance

• Advanced humidity control capabilities

• Comprehensive manufacturer warranty

• Works seamlessly with the Infinity System Control smart thermostat

• Communicating components for optimized performance

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The Bottom Line

The Infinity 98 is Carrier’s only modulating gas furnace, offering precision control over temperature and airflow. Its modulating gas valve and variable-speed blower motor allow it to adjust heating output between 40% and 100% capacity in 1% increments. This ensures the system runs continuously at low levels, maintaining even temperatures throughout your home without wasting fuel or energy.

Thanks to its communicating technology, the furnace learns your home’s heating patterns and automatically adjusts performance for consistent comfort.

This model also operates more quietly than single- or two-stage furnaces and, according to Carrier, ranks among the quietest in its class.

When paired with the Infinity System Control, the furnace unlocks Greenspeed Intelligence, enhancing performance and optimizing energy efficiency for the entire HVAC system.

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In-Depth Review

Product Specifications

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Features Overview

The Infinity 98 includes all of Carrier’s signature efficiency features, such as a secondary heat exchanger for improved energy capture and a hot surface ignition system to reduce fuel waste. It’s also compatible with several of Carrier’s proprietary technologies:

• Ideal Humidity System™: When paired with the Infinity System Control and a whole-home humidifier, the furnace provides exceptional dehumidification and year-round comfort.

• Hybrid Heat® System: Combine the furnace with a compatible air conditioner or heat pump to create a dual-fuel system for even greater energy savings.

• ComfortFan™ Technology: Offers multiple fan speeds in constant ON mode for easier control of airflow and indoor humidity.

• Infinity System Control Compatibility: Provides system diagnostics and access to Carrier furnace light codes for quick and easy troubleshooting.

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Other Key Highlights

• Variable-speed blower improves SEER ratings when paired with a Carrier air conditioner

• Features Comfort Heat® Technology for consistent, efficient heating

• Supports both single-zone and multi-zone Infinity Systems

• Compatible with humidifiers and electronic air cleaners

• Works with both natural gas and propane

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Warranty Coverage

The Infinity 98 includes a lifetime heat exchanger warranty and a 10-year parts warranty — standard coverage for Carrier furnaces.

To receive full warranty protection, make sure to register your furnace within 90 days of installation. Unregistered units receive shorter warranty terms.

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Comparable Carrier Models

1. Model Comparison by Price

Infinity 98 – 59MN7 vs. Performance 96 – 59TP6

As Carrier’s flagship model, the Infinity 98 commands the highest price. By contrast, the Performance 96 – 59TP6 is more affordable, typically ranging from $5,000 to $5,600 installed.

While you’ll sacrifice some efficiency and performance, the Performance 96 still offers impressive features — including a two-stage burner, variable-speed blower motor, secondary heat exchanger, and 96.5% AFUE rating.

For many homeowners, the Performance 96 provides a strong balance of value, comfort, and efficiency at a lower cost.

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2. Model Comparison by Features

Infinity 98 – 59MN7 vs. Comfort 92 – 59SC2

The Infinity 98 sits at the top of Carrier’s lineup, while the Comfort 92 – 59SC2 represents the entry-level option. The Comfort 92 is a single-stage furnace with a multi-speed blower and 92.1% AFUE.

However, it lacks compatibility with Carrier’s advanced technologies and doesn’t meet Canada’s minimum 95% efficiency requirement, making it unsuitable for most modern homes. It offers less comfort, higher operating costs, and reduced humidity control compared to the Infinity 98.

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3. Model Comparison by Tier

Infinity 98 – 59MN7 vs. Infinity 96 – 59TN6

The Infinity 96 – 59TN6 is another premium option, though not as advanced as the Infinity 98. It features a two-stage burner instead of a modulating one and delivers a slightly lower 96.7% AFUE.

While energy savings will be similar, the Infinity 96 lacks Greenspeed Intelligence, which gives the Infinity 98 a clear edge in comfort precision and efficiency optimization.