Lennox ML180 Commercial Gas Furnaces Boasting greater flexibility in your commercial gas furnace, the Lennox® ML180 may be your answer. This multi-position system is designed to fit almost any application. With a 33” design profile and capacity range of 44,000-132,000 Btuh, models are available in both upflow/horizontal or dedicated downflow designs. In addition, the system features a power-saving constant-torque motor and silicone nitride ignitor to offer reliability and an 80% AFUE rating. More product details include: Multi-speed, direct-drive slide-out blower Simple installation and toolless entry for speedy maintenance Sealed blower compartment 10-Year Limited Warranty on the ML180 heat exchanger 1-Year Limited Warranty on covered components Call A1 Chesney Service Experts Heating & Air Conditioning in Calgary at 587-315-5271 to discover more benefits. We’re not just the experts for all your replacement HVAC system needs – we also will be just down the road when it your routine maintenance visits come around. Remember, when you work with us, you’ll always receive expert service, guaranteed.