Lennox ML180 Commercial Gas Furnaces If you want increased flexibility in your commercial gas furnace, the Lennox® ML180 could be the system for your company. This multi-position furnace 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 ensure reliability and an AFUE efficiency rating of 80%. Other product details include: Multi-speed, direct-drive slide-out blower Easy installation and toolless entry for quick maintenance Sealed blower compartment 10-Year Limited Warranty on the ML180 heat exchanger 1-Year Limited Warranty on covered components Call Donelson Air Service Experts Heating & Air Conditioning in Nashville at 615-953-9885 to learn more. Not only are we experts on HVAC system replacements, but we also will be just down the road when it your routine maintenance visits come around. Remember, when you work through us, you’ll always receive expert service, guaranteed.