Can positive pressurization be achieved using blowers, LGRs, or negative air machines?

Positive pressurization is a technique used to control the airflow within a space, intended to prevent contaminants from entering an area by creating a pressure differential. When discussing whether blowers, LGRs (Low Grain Refrigerant dehumidifiers), or negative air machines can achieve positive pressurization, it is important to understand how each of these devices operates.

Blowers are typically used to move air into a space, and while they can help in creating a pressurized environment when directed appropriately, their primary function is to circulate air rather than to pressurize it. LGRs mainly function to dehumidify the air and are more focused on moisture removal than on creating positive air pressure.

Negative air machines, as the name indicates, are designed to expel air from a space to create a negative pressure environment. They remove air, which creates a vacuum effect and is specifically intended for containment in mold remediation or hazardous material handling. They do not facilitate positive pressurization.

Given this understanding, the assertion that blowers, LGRs, or negative air machines can achieve positive pressurization lacks accuracy, since these devices do not effectively create a positive pressure scenario. Instead, they serve different roles that may inadvertently work against the goal of achieving