How to Properly Install a Rooftop Swamp Cooler

Introduction to Evaporative Coolers

An evaporative cooler, also known as a swamp cooler, provides relief during extremely hot and dry climates. It works by using the principle of evaporation to cool the air. By adding needed humidity to the air and washing out dust, these coolers are highly effective in many residential areas.

Correct Method of Installation

When installing a rooftop swamp cooler, it is crucial to mount the unit on a roof curb designed to match the roof line and ensure the unit remains level. This curb is flashed to the roof to provide waterproofing. The cooler itself features an overlapping flange around the base, which serves as a water-shedding mechanism, ensuring the unit remains dry and functional.

The swamp cooler’s blower directs airflow downward to a ceiling-mounted deflector grill. This setup not only directs the cooled air effectively but also helps in maintaining a consistent and efficient cooling system.

Alternative Modes of Installation

While the correct method is preferred for its efficiency and aesthetics, some units have been seen mounted on makeshift support structures that exhaust air sideways. In such cases, a custom transition is needed to match the exhaust side, and the ductwork is sealed to route the airflow through the roof. However, these units tend to be unsightly, especially when viewed from the street side.

Integration with Ductwork and Thermostats

For residential locations where the central heating system’s ductwork is already in place, a rooftop swamp cooler can be connected to the existing system. A damper is typically used to control the airflow, directing it from the furnace to the rooftop cooler or vice versa. Additionally, the unit can be connected to a thermostat to automatically regulate the temperature. This integration is seamless and provides a more efficient cooling system.

Considerations for Room Ventilation

To ensure the swamp cooler operates effectively, it is essential to slightly open windows in rooms that need to be cooled. The cooler requires 100% outside air to function optimally, and by opening windows, you allow for proper ventilation and air circulation.

Conclusion

Proper installation of a rooftop swamp cooler is crucial for both efficiency and longevity. By following the correct method of mounting and integrating with the existing ductwork or central heating systems, you can ensure the best cooling performance. Always consider the aesthetics and functionality when deciding how to mount the unit, and remember that proper ventilation is key to its effective operation.