Inline duct fan, control system, and method of controlling the same

An inline duct fan for moving air through an HVAC system, the inline duct fan comprising:

• a housing comprising:
• a body portion comprising:
• a surface;
• a first flange extending from the surface adjacent to a first side portion;
• and
• a second flange extending from the surface adjacent to a second side portion;
• the first side portion extending outward from the body portion, wherein the first flange of the body portion extends around the first side portion, and the first side portion comprising a mounting tab, wherein the mounting tab defines one or more first mounting holes therethrough;
• and
• the second side portion positioned opposite the first side portion and extending outward from the body portion, wherein the second flange extends around the second side portion, and the second side portion defining one or more second mounting holes therethrough;
• wherein the second side portion is configured to be mounted to either (i) ductwork, wherein the second side portion extends at least partially within the ductwork, or (ii) an HVAC device via the one or more second mounting holes;
• and
• a fan assembly including a fan blade and a fan motor, wherein the fan assembly is positioned at least partially within the first side portion of the housing.