The Landmark® Rooftop System in San Antonio The Landmark® Rooftop System: Greater Performance. More Flexibility.The Lennox® Landmark rooftop system boasts many outstanding features. With standard- and high-efficiency models, the Landmark rooftop system earns 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. Saving increase further with this system’s Environ™ coil system, which uses up to 52% less refrigerant and has up to 59% less weight. The Landmark is sold 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 decrease CO2 and VOC levels Field- or factory-installed MERV 8 or 13 filters reduce airborne particles Optional MSAV supply fan lessens 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 enables compressor operation to run normally and not disrupt airflow throughout performance checks From installation to repairs, San Antonio Air Service Experts Heating & Air Conditioning in San Antonio can take care of all your Landmark rooftop system needs. We’re the experts in this field, so whether you’re looking to buy a new system or only need some repair work, we’ve got you covered. Call 210-570-9705 to set up your free consultation. 1 Part load. IEER improvement. Comparing standard 10.9 IEER system to optional MSAV 13.8 IEER system.