DEKA Service is a mechanical contractor in St Louis, MO specializing in HVAC service, repair and installation. We service commercial HVAC equipment including chillers, steam or hot water boilers, cooling towers, packaged rooftop units, air handling units, ventilation fans and split-systems including ductless mini-splits. We also perform piping repairs and upgrades. DEKA Service was formed in 2011 by acquiring the assets and hiring the employees of Russco Heating & Air Conditioning dba Weber Service. At the time, Weber Service was a 31 year old mechanical contracting business.