An HVAC (Heating, Ventilation, Air Conditioning) system that is designed for commercial as well as residential buildings such as malls, hotels, offices, warehouses, restaurants, bars, villas, bungalows, Yoga studios, fitness centers, hospitals, airports, industrial plants, pharma companies, manufacturing units, and other commercial buildings, the need for ventilation and exhaust is extremely important. The heat, fumes, odor generated by occupants as well as several activities can result in foul air inside these buildings. Therefore, the foul air needs to be constantly flushed out of the building in order to maintain a hygienic ambience. And therefore, an inline fan is used extensively in residential as well as commercial buildings to flush out the foul air out of the premises.
The inline fan is typically connected either with the circular duct or rectangular duct. Therefore, an inline fan is sometimes also known as a duct fan. If the inline fan is connected to the circular duct, then that inline duct fan is called an inline circular duct fan. If the inline duct fan is connected to the rectangular duct, then that inline fan is called an inline rectangular duct fan. Low sound levels, high quality, ease in installation, and useful accessories are some of the benefits of inline fans over the standard fans. Since, most of the HVAC systems make use of ducting, therefore, it makes sense to use inline fans for the purposes of exhaust and ventilation. The inline fans succeed in providing desired exhaust by extracting foul air from the building. Therefore, sometimes these fans are also termed as inline exhaust fan or inline extractor fan.
In a typical home such as in a villa, bungalow, duplex, apartment, the inline fan is typically installed to flush the foul air from the kitchen or bathroom. An inline bathroom exhaust fan sucks the foul air from the WC, shower, bath tub area. Similarly an inline kitchen exhaust fan sucks foul air as well as fumes from the kitchen cooking area. In a commercial building such as in a hotel, hospital, mall, airport, warehouse, office, restaurant, bar, fitness center, yoga studio, clinic, nursing home, manufacturing unit, the inline duct fan is typically installed in restrooms, toilets, etc.
The size of the inline fan that needs to be installed is based on the amount of foul air that needs to be flushed out. Generally, for home applications, 300-400 CFM of inline fan is sufficient. Whereas for commercial applications, 500-2000 CFM of inline fan is chosen.