Home » Contact Us » Back  » Service Department Service Department Team up with On Site Energy On Site Energy's service program is the perfect addition to your facilities management strategy.  You will benefit from the best trained, most experienced technicians, consistently providing the highest level of quality service in the industry. With almost 300 years of combined expertise, On Site Energy will keep your facility operating smoothly.  You don't have to be there to realize that On Site Energy will deliver.  Contact us today and put our experts to work for you. We'll care for your systems, and give you peace of mind.  For your everyday operation or any emergency situation, let On Site Energy be there.   Contact a service office near you, or call us  toll-free at 1-800-RENTAL-1 (736-8251)  New York  New Jersey  Connecticut   [ OSEC Service Program ]