Merit® Series Gas Furnaces Provide Reliable Heat When You Need it Most

With an AFUE efficiency rating* as high as 95%, you know energy efficiency is big feature of this gas furnace. Add this rating to the ML195’s durable build and other energy saving features, and you’ll experience possibly hundreds of dollars in savings every year on your utility expenses. To make things even better, the ML195 is affordably priced and can help create a cozy haven for your home year after year.

ML193 Gas Furnace

The ML193 gas furnace will keep your Rock Hill area home warm and cozy for many years with its high reliability features. Plus, this system won’t an arm and a leg. You may actually save on your utility expenses thanks to the high energy efficiency of this equipment. It has an efficiency rating of 93% AFUE,* and its durable steel cabinet traps warm air to increase efficiency.

  • Sealed blower compartment for a quiet operation and less than 1% leakage at 1.0” ESP
  • SureLight® ignitor offers reliable operation
  • Duralok Plus® heat exchanger helps improve reliability and efficiency
  • Dual-fuel capability – can combine with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat
  • 20-Year Limited Warranty on heat exchanger
  • 5-Year Limited Warranty on covered components (this product may be eligible for valuable 10-year Limited Extended Warranty coverage)
ML193 Gas Furnace
Efficiency Rating (SEER): 93
Price Guide: $

ML180 Gas Furnace

If you need to stay within a budget for your gas furnace replacement, the ML180 is a great option that won’t make you sacrifice reliability or efficiency. You may likely experience benefits after you buy: since the ML180 has earned an 80% AFUE efficiency rating*, you could save money on your monthly utility costs. Sounds like a good return on investment to us.

  • Insulated blower compartment helps keep your home quieter and more peaceful
  • Dual-fuel capability allows you to pair the furnace with an electric heat pump and alternate between gas and electric heat for maximum energy efficiency and reduced heating costs
  • Duralok Plus® heat exchanger ensures reliability and efficiency
  • Hot surface igniter – controls operation to enable a reliable and efficient performance.
  • 20-Year Limited Warranty on heat exchanger
  • 5-Year Limited Warranty on covered components (this product may be eligible for valuable 10-year Limited Extended Warranty coverage)
ML180 Gas Furnace
Efficiency Rating (SEER): 80
Price Guide: $

ML180E Mid-Efficiency Gas Furnace

With the ML180E gas furnace, you could save hundreds of dollars every year when compared to an older, less efficient system. With an AFUE of 80 percent, 80 percent of every dollar spent on gas goes directly to adding comfort to your home. And a power-saving motor helps the furnace use a reduced amount of energy in both heating and cooling modes. This furnace also includes:

  • Efficiency rating of up to 80% AFUE1—which can decrease energy costs.
  • Power Saver™ constant torque motor matches airspeed to demand, decreasing energy costs for heating and cooling.
  • iComfort®-enabled technology, when connected with an iComfort® E30 Smart Thermostat, can save you more on utility bills.
  • Dual-fuel capable—Use with an electric Lennox® heat pump for maximum efficiency.
  • SureLight® hot surface ignition ensures dependable heating.
  • Sealed blower compartment limits heat loss.
  • Duralok Plus™ Heat Exchanger features extra-tough ArmorTuf™ aluminum steel.
  • Robust blower assembly tops industry guidelines to provide consistent temperatures and enhanced comfort.
  • Durable steel cabinet is made to last and has an attractive appearance.
  • Air filter and humidifier compatible.
  • 20-Year Limited Warranty on the heat exchanger.
  • 5-Year Limited Warranty on all remaining covered components.
  • 10-Year Limited Extended Warranty with product registration—ask US Air Heating and Cooling for more information.2
ML180E Mid-Efficiency Gas Furnace
Efficiency Rating (SEER): up to 80
Price Guide: $


1Annual Fuel Utilization Efficiency (AFUE) measures how efficiently an appliance converts fuel into heat over the course of a year. 
2Covered components may be eligible to receive a 10-year warranty. Online equipment registration at is required within 60 days of installation (except in California and Quebec) or the Lennox® base warranty will apply. Applies to residential applications only. See actual warranty certificate for details.
Note: Due to Lennox’s ongoing commitment to quality, specifications and ratings are subject to change without notice.


We’re ready to help with your gas furnace replacement. Give US Air Heating and Cooling in Rock Hill a call at 803-220-0761 or set up an appointment online to get started. Our team can take care of gas furnace repairs and maintenance, too, so make us your first call for any heating system needs.

* Annual Fuel Utilization Efficiency (AFUE) measures how efficient the appliance is in converting its fuel’s energy into heat over the course of a year.