Renting cooling is a different purchase from buying an air conditioner, because you are solving a temporary problem: a failed unit, a hot server closet, a shift working through a heat wave. Yards hire portable spot coolers by the day, week and month, sized in tons rather than by room. The two questions that decide the hire are how much heat you must remove and what power you can give the machine.
Size in tons, and size for the heat, not the floor
One ton removes about 12,000 BTU an hour. Spot coolers are hired from roughly one ton up, and the load is set by what is producing the heat rather than the square footage: a closet full of servers needs more than a much larger empty room. Count the equipment, the people and the sun on the glass, then let the yard convert that into tons.
The power limit arrives sooner than people expect
About one ton is the practical ceiling on an ordinary 120-volt circuit, and even that wants the circuit to itself. Above it, machines take 208 or 230 volts, and larger ones take three phase. Check the outlet before you book. A cooler that cannot be plugged in is the single most common reason one goes back the day it arrives.
The hot air has to go somewhere
A portable air conditioner does not destroy heat, it moves it. The condenser exhaust must be ducted out of the space being cooled, whether that is through a window kit, into a ceiling void or out a door. Blowing it into the same room makes the room hotter. Ask what ducting comes with the hire, because kits are often a separate line.
What a week costs and when to book
A one-ton portable typically runs about $150 to $350 a week, with monthly rates at roughly three weeks. The real constraint is the calendar rather than the price: during a regional heat wave the portable fleet within reach goes out in a day. If your need is predictable, such as summer plant maintenance, book ahead of the season.
Questions people ask about rent ac unit
Can I rent an AC unit for a week?
Yes, and the week is the most common hire length for portable cooling. Yards quote a day rate too, but delivery and collection is the same either way, so a week often costs little more than three days once transport is counted.
What size AC unit do I need to rent?
Give the yard the size of the space, what is in it generating heat, and how many people are working there. Cooling is sized by heat load rather than by floor area, which is why a small equipment room can need more than a large storeroom.
Does a rented portable AC need a window?
It needs a route for the hot exhaust, and a window is the easiest one. A ceiling void, a doorway to another space or a vent will do the same job. What does not work is leaving the duct in the room you are trying to cool.