How many return vents have been installed in Wendy's?

The correct answer indicates that Wendy's has installed four return vents, which is a typical amount for a restaurant of its size and function. In commercial settings like fast food restaurants, return vents play a crucial role in ensuring proper ventilation and maintaining air quality. Adequate ventilation helps control humidity, reduce odors, and maintain a comfortable environment for staff and customers.

Installing four return vents can help create a balanced air flow throughout the restaurant, allowing for effective heating and cooling of the space while ensuring that stale air is efficiently removed and replaced with fresh air. This setup is beneficial for managing the various sources of air contamination, such as cooking fumes and other pollutants that are common in food preparation areas.

In general, the number of return vents required depends on the size of the space, the layout, and the HVAC system design, which can vary across different establishments. Thus, the installation of four return vents in Wendy's indicates a thoughtful approach to maintaining appropriate air quality standards, reflecting industry best practices for restaurant ventilation systems.