The Landmark® Rooftop System in Nashville The Landmark® Rooftop System: Greater Performance. More Flexibility.The Lennox® Landmark rooftop system boasts many outstanding features. Available in standard- and high efficiency units, the Landmark offers a SEER rating of up to 13.0, a 14.5 IEER rating and an EER rating of up to 12.7. When you add the optional MSAV® supply fan, you’ll see the Landmark’s efficiency increase by up to 27%1. The savings continue with this system’s Environ™ coil system, which uses up to 52% less refrigerant and is up to 59% lighter. The Landmark is offered in 2- to 25-ton gas/electric and electric/electric and 2- to 20-ton heat pump configurations. Some of its best features include: Field-installed CO2 sensors to reduce CO2 and VOC levels Field- or factory-installed MERV 8 or 13 filters cut back on airborne particles Optional MSAV supply fan helps control humidity ENERGY STAR® certification Interlink compressor delivers better reliability and efficiency Environ™ coil system ensures reliable operation and reduces the time it takes to clean the condensing coil Isolated compressor compartment permits compressor operation to run normally and not disrupt airflow throughout performance checks From installation to repairs, Donelson Air Service Experts Heating & Air Conditioning in Nashville can take care of all your Landmark rooftop system needs. After all, we’re the experts, so whether you’re looking to upgrade your system or simply need a little repair work, we’ve got you covered. Call 615-953-9885 to set up your free consultation. 1 Part load. IEER improvement. Comparing standard 10.9 IEER system to optional MSAV 13.8 IEER system.