For many commercial buildings, it makes sense to use a rooftop heating, ventilation and air-conditioning (HVAC) unit. Rooftop units are used often for air conditioning in large buildings primarily due to the fact that they are all-inclusive, less expensive and are easier to install. There are many different types and features, depending on what types of temperatures the region has and what energy source they use. 

Air Conditioning

The main function of a rooftop HVAC unit is to cool the air throughout the building, while filtering and circulating it as well. This function also helps with controlling humidity by dehumidifying the air. These large units have anywhere from 1 ton to 100 tons of air-conditioning capacities. 

Heating

Some HVAC units also come with heat pumps or heating equipment, depending on the climate where they are sold and obviously the temperature extremes. The heating elements can be gas or electric and use the ventilation system to keep the temperature warm in the cooler months. 

Choosing A Commercial HVAC Unit

The biggest issue with choosing the correct HVAC unit for a commercial building is to get the correct size and capacity. An undersized unit will not do the job, but often buildings go too far the other way and buy units that are too large. These not only cost more initially, they will cost much in power usage and are inefficient. Anyone choosing an HVAC unit for a commercial building needs to consult with a commercial and industrial HVAC contractor and discuss internal load conditions, which takes into consideration the amount of space, people and other factors which affect the indoor air temperature. 

These self-contained rooftop units are responsible for cooling almost 50% of all the U.S. commercial floor space. Due to their popularity, there are many choices and options to choose from.  A commercial and industrial HVAC contractor can help you choose the right system for your office, restaraunt, shopping center, or other commercial and industrial facility.