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  • Writer's pictureRankin Group


In the fall, your heating and cooling needs may vary drastically. One day you could find yourself shivering under a sweatshirt, and the next you are roasting in your shorts and t-shirt. If you are responsible for heating or cooling a commercial facility, this may be a season when portable heating and cooling units can help you manage changing temperatures.


Autumn is a tricky season for portable heating and cooling, because you’ll likely have hot days and cool days, so you might need both heating and cooling. Before you shop for a portable comfort system, consider your overall climate needs. Do you anticipate more warm or cool days this fall? Choose your portable unit based on your probable needs.


In many parts of the country, autumn is when temperatures start to drop in preparation for winter, making portable heating the right choice. If you are in the market for portable heating, you have three basic types to consider: direct-fired, indirect-fired and electric heaters.

Direct-fired heating units use a natural gas source to create a flame, then pass the air across the flame to heat the area. These are efficient, powerful and fairly inexpensive, but they do require ventilation to protect people from carbon monoxide.

Indirect-fired heating units work in the same way as a home’s gas or electric furnace. They have a burn chamber and heat exchanger that heats the air without passing it over the flame directly. These can operate in a tightly sealed space, as long as there is an exhaust ventilation option, because they do not release any carbon monoxide into the space. They are more costly than direct-fired units, however.

Finally, electric heaters use electricity to heat a heating coil. A fan blows the room’s air across the heating coil, warming it and then sending it into the air. Because they do not have a flame, these heaters do not require ventilation. This makes them a popular choice when heating needs to be moved around the facility.


While heating is the more common need in the fall, some parts of the country enjoy hot weather most of the season. In this case, if you need supplemental HVAC service, you will want a portable cooling unit.

Portable air conditioners come in two basic types: air-cooled and water-cooled units. Air-cooled units recycle the air inside the space with outside air. In order to function properly, these units need access to the outside, often through a door or window. When this type of access is not available, they may be vented into an attic area that can handle the heat.

For spaces where outside access is not possible, water-cooled air conditioners are the best choice. These remove heat from the air using water. They need a water supply, which they may be permanently connected to. They do not require ventilation, however.


Rankin offers temporary heating and cooling units you can rent for your facility, ensuring you can have a comfortable space all year, including in autumn when your needs may vary. Find a unit that meets your needs today with the help of the Rankin team.

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