Lennox ML180 Commercial Gas Furnaces Boasting more flexibility in your commercial gas furnace, the Lennox® ML180 may be your answer. This multi-position equipment is designed to fit just about 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. In addition, the unit features a power-saving constant-torque motor and silicone nitride ignitor to offer reliability and an AFUE efficiency rating of 80%. Additional product details include: Multi-speed, direct-drive slide-out blower Easy 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 Service Experts Heating & Air Conditioning in Dallas at 469-249-1971 to discover more benefits. We’re the experts for all your HVAC replacement needs, but our work doesn’t stop there. We also will be right around the corner when it your routine maintenance visits come around. Remember, when you work through us, you’ll always receive expert service, guaranteed.