Carrier Infinity® Series Greenspeed® 98 – 59MN7 Review

The 59MN7A is a top-tier furnace model from Carrier. It uses the unique Greenspeed® Intelligence technology at the core of which lies the modulating compressor or the variable-speed compressor. This design allows the compressor to speed-up & slow down in small increments in the 40%-100% capacity range. What you get is precise heating that optimizes indoor climate control and the energy-efficiency of the system.

When you opt for the Carrier Infinity® Series with Greenspeed® Intelligence 59MN7A, you know that you are investing in a premium product that will provide seamless performance and excellent energy-efficiency.

In a Nutshell

Average Price (installed): $5,000-$6,000

Top Features

• AFUE rating of 97.2-98.5%
• BTU input is 60,000-120,000
• BTU output is 59,000-117,000
• Variable-Speed ECM, Modulating compressor

Bottom Line

This premium product is made for discerning buyers that are comfortable with investing extra dollars for their home heating requirements. The 59MN7A with Greenspeed® Intelligence helps ensure you have comfortable, perfectly temperature controlled and quiet indoor spaces.

In-Depth Review

Carrier Infinity® Series with Greenspeed® Intelligence 59MN7A

• Up to 98.5% AFUE heating efficiency
• Pilot-free, hot surface PowerHeat™ ignition
• Allows 4 levels of fan speed operation of "constant ON"
• Variable-speed blower boosts SEER efficiency
• Improves airflow control for greater quiet and comfort in zoned-in systems

Other Key Features

• Factory-configuration ready for upflow applications
• Supports single- and multiple-zone Infinity systems
• Convenient Humidifier and Electronic Air Cleaner connections
• CSA (AGA & CGA) design-certified and can be used with propane & natural gases
• Better dehumidification during air conditioning cycles
• Load matching performance function delivers the amount of heat required for quieter and longer run times while minimizing the use of energy

Innovative Technology (related to temperature control) Features

Ideal Humidity System® technology aids in heat pump/air conditioner summer dehumidification. The ComfortFan™ technology allows for fan-speed level choices in "Constant ON" mode and the innovative Comfort Heat Technology® feature staged heating cycles to intelligently improve efficiency and reduce temperature swings. The system’s SmartEvap™ technology works in conjunction with the cooling system to enhance summer dehumidification.

Maintenance Features

The Greenspeed® Intelligence 59MN7A has advanced, Infinity level diagnostic intelligence. This enables easy troubleshooting and self-configuration with Infinity control. The Infinity User Interface or Advanced Product Monitor (APM) accessory offers extended diagnostic data and self-diagnostics making service and maintenance easy.

Warranty Information

There's a twenty-year limited warranty for the  Greenspeed® Intelligence 59MN7A heat exchanger and a ten-year parts warranty. This is decent but not exceptional coverage, especially for a high-end furnace model like this one. Good but not great. An optional labor warranty is also available.

Comparable Models by Carrier

Model Comparison by Features

The 59TN6 has AFUE rating of 96.1-96.7% rating. Compared to that, the Greenspeed® Intelligence 59MN7A has a slightly higher AFUE rating of 97.2-98.5%. The BTU input of both these models in the range of 60,000-120,000. Both these furnaces come with ComfortFan™ technology, ComfortFan™ technology and SmartEvap™ technology, but the 59MN7A is unmatched when it comes to zoning control compatibility.

Model Comparison by Price

The installed price of the Carrier Infinity® Series 59TN6 is an average of $4,050, while the installed price of the Greenspeed® Intelligence 59MN7A is $5,000-$6,000. Residential installations of both these models may be eligible for flexible financing options which allow you to spread out the cost over several years. These furnaces have ECM blower motors with variable speeds that offer quiet operation and increased comfort.

If you are looking to invest in a top tier heating system, the 59MN7A is a good option, even if its warranty doesn’t lead the pack. It comes with good zoning and heat control versatility and some solid noise-controlling features. It has all the bells and whistles that you expect in a premium furnace and then some more.