Illingworth Engineering, established in 1939, is one of the largest retailers of industrial boilers manufactured by Cleaver-Brooks, Nebraska, Parker, Aerco, Exhausto and Metalbestos & Cain. The company, in business for more than 65 years, also sells commercial burners, boiler feed pumps, heat recovery systems, steam systems, water heaters, heat exchangers, stacks and mechanical draft systems. The company also purchases and rents preowned boilers, and provides periodic maintenance services to its customers. The company, headquartered in Jacksonville, Fla., serves the counties of Alachua, Baker, Bradford, Clay, Columbia, Dixie, Duval, Flagler, Gadsden, Gilchrist, Hamilton, Jefferson, Lafayette, Leon, Levy, Madison, Nassau, Putnam, St. Johns, Suwannee, Taylor, Union and Wakulla.