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

You’ll find a wide variety of affordable and high efficiency gas furnaces at Twin Air LLC in Manassas. Our Merit Series products offer 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, giving you the comfort you need throughout the coldest months of the year. See details about each system below, and call us at 703-754-1062 or make an appointment online to learn about a gas furnace replacement for your home.

ML195 Gas Furnace

You shouldn’t have to spend a fortune on highly energy efficient products that can save you hundreds on your utility bills. Our ML195 gas furnace is affordable for most all budgets and has achieved an energy efficiency rating of 95% AFUE,* one of the highest available. This furnace is the ideal choice for outstanding comfort, efficiency and reliability.

  • Sealed blower compartment improves comfort and helps minimize operating sounds
  • Stainless steel secondary heat exchanger – enables the furnace to realize higher efficiency levels by capturing extra heat
  • SureLight® ignitor allows reliable operation and helps extend the product’s 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 Manassas area home, the ML193, which is full of features to improve reliability, is for you. Its Duralok Plus® heat exchanger, SureLight® ignitor and durable steel cabinet all constructed with materials that help improve reliability and increase product life. And, with an AFUE rating* of 93%, this energy efficient gas furnace can help reduce those monthly energy bills.

  • Sealed blower compartment for a quiet operation and less than 1% leakage at 1.0” ESP
  • SureLight® ignitor for a more reliable operation
  • Duralok Plus® heat exchanger – helps improve energy efficiency and reliability
  • Dual-fuel capability – when combined with an electric heat pump, this feature can help increase fuel efficiency by alternating between electric and gas fuel
  • 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 best word to describe the ML180 gas furnace. Its 80% AFUE efficiency rating*, meaning the unit efficiently converts energy into heat, and the sealed blower compartment keeps this heat inside to decrease losses and maximize efficiency. If that wasn’t good enough, this furnace is also affordably priced to fit nearly any budget.

  • Insulated blower compartment for a quiet operation and a more peaceful home
  • Dual-fuel capability allows you to connect the furnace with an electric heat pump and alternate between gas and electric heat for optimal energy use and lower heating costs
  • Duralok Plus® heat exchanger increases reliability and efficiency
  • Hot surface igniter – controls operation for a more 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: $

Twin Air LLC can take care of all your gas furnace replacement needs. If you’re needing gas furnace repairs or maintenance in Manassas, our staff has you covered. Just give us a call at 703-754-1062 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.