Restroom Calculator

Need an estimate for how many porta potties your event needs? Use this handy calculator! For a more specific quote tailored to your needs, call us today at 800-210-8407!

special events calculator

Portable Heat Calculator

Need an estimate for how many BTU's you'll need to heat up your space? Use this handy calculator! For a more specific quote tailored to your needs, call us today at 800-210-8407!

Heating Calculator
*Please press the "tab" key on your keyboard or click out of the field after entering all fields to ensure the calculation is correct.


MOB-250 Portable Air Conditioner (290,000 BTU/Hr)

The MOB-250 portable air conditioner is our largest air conditioning unit offered by On Site Companies. This unit can be placed outside of buildings to have cool air ducted in to provide relief from heat as well as dehumidification to construction sites.



Cooling Capacity 290,000 BTU/h
CFM 10,000
Power Supply 460V/ 57 Amps/ 3PH
Power Cord Gauge 6 AWG (4-core)
Condensate Removal Per Day at 95ºF at 60% RH up to 25 gph
Dimensions 128″L/ 92″W/ 63″H
Weight 3,200 lbs.

The MOB0-250 portable air conditioner from On Site Companies can provide temporary and portable relief from the heat. This air conditioner can be ducted into any building to provide you with cool air. The MOB-250 is perfect as a temporary solution for your cooling needs in situations such as special events and times when you need emergency cooling.

Typical Applications

  • Manufacturing
  • Tents and special events
  • Aerospace industries
  • Building/ plant maintenance
  • Emergency cooling

The MOB-250 Portable Air Conditioner Available in:

  • Minneapolis/ St. Paul, Minnesota
  • Rochester, Minnesota
  • Mankato, Minnesota
  • St. Louis, Missouri

Related Products

On Site Companies can offer you a wide range of portable toilet and sanitation solutions to serve your needs.


I have a special event with an estimated attendees, for hours.
  • Will there be more women than men?
  • Will there be alcohol served?

Our phone system will temporarily be shut down for maintenance on Saturday, July 24. For emergency assistance during this time, please call your branch’s corresponding after hours phone number directly. See onsiteco.com/locations for phone number listings. Thank you.