Hunter Manufacturing Company is a leading manufacturer of NBC (nuclear, biological and chemical) air filters and air filtration systems and specialized vehicle and space heaters for military and commercial applications. In its heater division, the company concentrates on specialized space heaters for military shelters and vehicle heaters for commercial and military vehicles . Through its operating unit, Hunter Protective Systems, the company is the leading supplier of NBC (nuclear, biological and chemical) air filters and air filtration systems for both the U.S. military as well as the rapidly emerging homeland defense market.

Founded in 1937 by Robert Hunter, the company earned its leadership in military heaters during World War II supplying tent and truck heaters for U.S. troops. Since then, Hunter has been the leading provider of new and innovative products for heating of personnel and cargo for both military and commercial applications. For example, Hunter makes every heater in the army's M-151 jeep and the Army's HMMWV ("Hummer"). In addition, thousands of military shelters and tents are warmed by Hunter's fuel burning heaters. Hunter's commercial heater models heat vehicle cabs and cargo bodies of heavy-duty trucks and construction equipment. Hunter's latest heater design utilizes thermoelectric technology to provide a heater that requires no external electricity, yet it circulates 35,000 BTU per hour of clean heated air for tents and shelters.

In the mid 1980's, Hunter embarked on a mission to meet the U.S. military's chemical-biological defense needs with our expanding line of air filters and air filtration systems. Today, Hunter is the leading maker of NBC (nuclear, biological and chemical) air filters and air filtration systems for the U.S. Military. Hunter's particulate and carbon-based filters are used in a wide range of applications, including individual and collective protection systems for temporary shelters, permanent structures, military vehicles, and on-board filtration systems for Navy ships. Hunter also supplies protective shelter entrances to military and OEM customers.

Since the late 1990s, Hunter has been working to adapt its proven NBC filtration systems to the homeland defense market. Hunter now offers a wide range of air filtration equipment for a variety of applications including collective protection of temporary and semi-permanent emergency response shelters and command centers, emergency response vehicles, and HVAC systems of buildings.