On Site Energy is the best established, most comprehensive portable energy solution Company in the Northeast. We help customers in many different industries to improve and safeguard their operations by solving problems, by being reliable, and thereby reducing risk. Rental Equipment: chiller rentals, air conditioner rentals, generator rentals, heater rentals, transformer rentals, air handler rentals, dehumidifier rentals, light tower rentals, load bank rentals, power cable rentals, movie production generators, ADA cable ramp rentals and more. We carry all the accessories and distribution that complement our rental equipment and we also sell Air Handlers and 150 kW Electric Heaters.