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

You’ll find a large collection of affordable and efficient gas furnaces at Keystone Heating & Air Conditioning Co., Inc in Racine. Our Merit Series products have earned high annual fuel utilization efficiency (AFUE) ratings, which measure how efficiently the equipment converts fuel to energy. Our systems are also made for reliability and a long product life, offering a cozy and comfortable home when it’s cold outside. Learn more about each system below, and call us at 262-358-9468 or schedule an appointment online to discuss a gas furnace replacement for your home.

ML195 Gas Furnace

You don’t need to break the bank buying highly energy efficient products that can help you save on your energy expenses. Our ML195 gas furnace is affordable for nearly all budgets and has earned an energy efficiency rating of 95% AFUE,* one of the highest available. This furnace is a nice option for excellent comfort, efficiency and reliability.

  • Sealed blower compartment for a quiet operation and improved comfort
  • Stainless steel secondary heat exchanger – enables the furnace to reach higher efficiency levels by capturing extra heat
  • SureLight® ignitor allows reliable operation and helps lengthen product life
  • Duralok Plus® heat exchanger – made of patented aluminized steel to ensure reliability and efficiency
  • 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)
ML195 Gas Furnace
Efficiency Rating (SEER): 95
Price Guide: $

ML193 Gas Furnace

If you’re looking for reliability in a gas furnace for your Racine area home, consider the ML193, which has a variety of features that contribute to a more reliable performance. Its Duralok Plus® heat exchanger, SureLight® ignitor and durable steel cabinet all constructed with materials that help contribute to more reliability and longer product life. And, with an AFUE rating* of 93%, this energy efficient gas furnace can help you save on your monthly utility bills.

  • Sealed blower compartment for a quiet operation and less than 1% leakage at 1.0” ESP
  • SureLight® ignitor helps increase operation reliability
  • Duralok Plus® heat exchanger – to help increase 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

Economical is the perfect word to describe the ML180 gas furnace. Its 80% AFUE efficiency rating*, meaning the machine efficiently converts energy into heat, and the sealed blower compartment retains this heat to decrease losses and maximize efficiency. To add to its great features, this product is also affordably priced to fit nearly any budget.

  • Insulated blower compartment helps minimize operation noises and make your home more peaceful
  • Dual-fuel capability enables you to connect the furnace with an electric heat pump and alternate between gas and electric heat for the most efficient energy use possible
  • Duralok Plus® heat exchanger increases reliability and efficiency
  • Hot surface igniter – controls operation to help increase efficiency and enable a reliable 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: $

Keystone Heating & Air Conditioning Co., Inc can take care of all your gas furnace replacement needs. If you’re looking for gas furnace repairs or maintenance in Southeast Wisconsin, our staff has you covered. Simply give us a call at 262-358-9468 or use our online scheduler to set up an appointment.


* 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.