Lennox ML180 Commercial Gas Furnaces If you want increased flexibility in your commercial gas furnace, the Lennox® ML180 may be your answer. This multi-position system is created to fit almost any application. With a 33” design profile and capacity range of 44,000-132,000 Btuh, we carry models in both upflow/horizontal or dedicated downflow designs. Moreover, the system features a power-saving constant-torque motor and silicone nitride ignitor to deliver reliability and an AFUE efficiency rating of 80%. More product details include: Multi-speed, direct-drive slide-out blower Smooth installation and toolless entry for fast maintenance Sealed blower compartment 10-Year Limited Warranty on the ML180 heat exchanger 1-Year Limited Warranty on covered components Call Strand Brothers Service Experts Heating & Air Conditioning in Austin at 512-592-3072 for more information. Not only are we experts on HVAC system replacements, but we also will be minutes away when it comes time for routine maintenance and service checks. Remember, when you work with us, you’ll always receive expert service, guaranteed.