Native Energy Source, LLC

Are you a maintainer or a repairer? Our customer tend to fall in one of those two categories. Either way, a service call is in your future. The difference is whether it's for preventive maintenance or to repair something that might have been avoided.

Hunter Mechanical and Controls is a locally owned and operated company that offers a range of services related to clients heating, ventilation and air-conditioning needs. It specializes in the sales, service, installation and maintenance of commercial heating and air-conditioning systems. The company provides residential and commercial installation services, including fiberglass and sheet metal ductwork, refrigerant and gas piping, and high- and low-voltage electrical wiring. Hunter Mechanical and Controls also offers design-build and 24-hour emergency response services. Its professional staff is comprised of technicians who are certified by the Environmental Protection Agency (EPA) in the area of safe refrigerant recovery and disposal. Hunter Mechanical and Controls is located in Oklahoma City, Okla.

SimplexGrinnell designs, engineers and installs life safety systems. It specializes in fire detection alarms, sprinklers, extinguishers, fire suppression, integrated security systems, health care communications and time clocks. It also provides services after the installation, such as inspection, testing, maintenance, monitoring and 24-hour emergency service. SimplexGrinnell employs more than 10,000 technicians, installers and other professionals who serve customers through a network of local offices that cover all of North America, including one in Oklahoma City. The company was formed in 2001, when Simplex was acquired by Tyco International and merged with Grinnell Fire Protection. The company s corporate headquarters are in Boca Raton, Fla., and its sales and marketing location is in Westminster, Mass.