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

You’ll find a large collection of affordable and high efficiency gas furnaces at Premium Air Services LLC in Tomball. Our Merit Series products have earned high annual fuel utilization efficiency (AFUE) ratings, which measure how efficiently the equipment converts fuel to energy. These products are also built for reliability and a long product life, offering a cozy and comfortable home when it’s cold outside. See details about each model below, and call us at 713-364-9957 or make an appointment online to discuss a gas furnace replacement for your home.

ML180 Gas Furnace

Economical is a great word to describe the ML180 gas furnace. Its 80% AFUE efficiency rating* means the machine efficiently converts energy into heat, and the sealed blower compartment traps this heat to reduce losses and improve efficiency. If that wasn’t good enough, this heating system 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 lets you 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: $

ML180E Mid-Efficiency Gas Furnace

The ML180E uses Power Saver™ technology to create an economical and trustworthy furnace. By changing airspeed to demand, its constant torque motor runs more efficiently than a regular motor. In fact, it’s 33% more efficient. And a tightly sealed blower compartment restricts air leakage to 1%, keeping you and your family more comfortable. This furnace also features:

  • Efficiency rating of up to 80% AFUE1—which can lower energy expenses.
  • Power Saver™ constant torque motor alters airspeed to demand, minimizing energy use for heating and cooling.
  • iComfort®-enabled technology, when installed with an iComfort® E30 Smart Thermostat, can save you more on energy costs.
  • Dual-fuel capable—Link with an electric Lennox® heat pump for peak efficiency.
  • SureLight® hot surface ignition ensures durability for your furnace.
  • Sealed blower compartment cuts back on heat loss.
  • Duralok Plus™ Heat Exchanger is made from reinforced ArmorTuf™ aluminum steel.
  • Robust blower assembly tops industry benchmarks for regular temperatures, enhancing comfort.
  • Durable steel cabinet is made to last with a resilient, yet 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 Premium Air Services LLC 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.


Premium Air Services LLC can take care of all your gas furnace replacement needs. If you’re looking for gas furnace repairs or maintenance in Harris County, our staff has you covered. Simply give us a call at 713-364-9957 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.