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 Oak Grove Heating & Air Conditioning in Hattiesburg. Our Merit Series products have received high annual fuel utilization efficiency (AFUE) ratings, which measure how efficiently the equipment converts fuel to energy. Our systems are also built for reliability and a long product life, giving you the comfort you need throughout the coldest months of the year. Learn more about each product below, and call us at 601-268-3486 or schedule an appointment online to learn about a gas furnace replacement for your home.

ML195 Gas Furnace

You don’t always have to spend a fortune on highly energy efficient products that can save you hundreds on your utility bills. In fact, the ML195 gas furnace is affordable for most all budgets and has earned an energy efficiency rating of 95% AFUE,* one of the best around. This furnace is a great choice for outstanding comfort, efficiency and reliability.

  • Sealed blower compartment for a quiet operation and improved comfort
  • Stainless steel secondary heat exchanger – enables the furnace to achieve 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 want a reliable gas furnace for your Hattiesburg 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 built with materials that help improve reliability and increase product life. 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 offers reliable operation
  • 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 a great word to describe the ML180 gas furnace. Its 80% AFUE efficiency rating* which means the equipment efficiently converts energy into heat, and the sealed blower compartment traps this heat to decrease losses and boost efficiency. To add to its great features, this product is also affordably priced to fit nearly any budget.

  • Insulated blower compartment helps soften operation sounds
  • Dual-fuel capability lets you 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 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: $

Oak Grove Heating & Air Conditioning can assist with all your gas furnace replacement needs. If you’re needing gas furnace repairs or maintenance in Hattiesburg, our staff has you covered. Simply give us a call at 601-268-3486 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.