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Indoor air quality is a major concern to businesses, commercial building managers, and employees because it can impact the health, comfort, and productivity of building occupants. If indoor air quality is not well managed on a daily basis, remediating any subsequent health or equipment problems can be extremely costly. It’s vital to understand the importance of providing and maintaining beneficial levels of clean air in your Chicago building in order to avoid these problems.

General Mechanical consults, sells, installs, and services a wide range of commercial and industrial HVAC and ventilation systems. A full-service maintenance contract with our team keeps your indoor air quality equipment running smoothly and efficiently, saving energy costs, unnecessary emergency calls, and component replacements.

Ventilation Systems

A commercial building’s ventilation system provides fresh heated or cooled air to interior spaces via various systems. The many components of each system work to ensure the free flow of clean air through the building

Dilution Ventilation

This type of ventilation thins airborne chemical particles by blowing in clean air while exhausting dirty air via exhaust fans on the roof or in walls.

Local Exhaust Ventilation

This system removes airborne contaminants at or near release sites within the building, then immediately funnels fouled air outside through the ductwork via internal fans. Some of these systems include specialized air cleaners that help reduce pollution.

At General Mechanical, we are the company of choice for creating custom ventilation systems. We can design a new system or redesign an existing ventilation system for increased safety and energy efficiency


Any commercial building is only as clean as its heating and cooling air ducts. Over time, those air ducts naturally become the perfect hiding place for dirt and debris. Your staff and customers spend a high percentage of each day inside your commercial building, so a steady supply of clean air is important.

In addition to ductwork, the ventilation experts at General Mechanical inspect, repair, and maintain the following components of your ventilation system:

  • Hoods
  • Air cleaners
  • Fans
  • Exhaust stacks
  • Cooling fans

Air Handlers

Commercial air handlers move the air throughout your building via one or more blowers that operate in conjunction with the heating and cooling components of the building’s HVAC system. These units do an excellent job circulating air through your commercial or industrial space while boosting the overall efficiency of the HVAC system.

Dehumidification Systems

The amount of humidity in the air is important for a variety of work environments because humidity levels can affect production equipment and processes, electrical components, and even the health of employees. The type of dehumidifier used in each instance is always carefully selected to work best with each particular application.

Exhaust Systems

While commercial exhaust systems are primarily used in commercial kitchen applications, many manufacturing facilities, hospitals, and industrial plants also employ these units to keep clean air moving throughout the building. In addition to our designs, we offer expert repair and maintenance services for wall-, roof- and hood-mounted exhaust fans and fresh air supply fans.

Choose General Mechanical for Commercial & Industrial HVAC Services

For nearly 100 years, General Mechanical has provided unparalleled mechanical services in Chicagoland. We serve all of your commercial and industrial HVAC and ventilation needs, including custom designed equipment, installation, maintenance, and repair of heating, cooling, and indoor air quality systems. Contact us today.