The advantage of a ground mounted version is you don t have to worry about your swamp cooler leaking through the roof.
Swamp cooler duct through roof detail.
You will also need a sheet metal can fabricated the same size as your ceiling diffuser opening and another round collar tied into the end cap.
Drill a pilot hole through the roof and use a saber jig saw or equivalent tool to cut the 18 inch diameter hole.
Diameter hole to be cut into the roof while not cutting through any roof joists.
Install several wooden blocks below the section of duct to.
This may require access into the attic.
A typical side draft cooler.
In some cases existing ductwork is used to move the air to the various rooms.
Mounted coolers are connected to ducts that bring the cooled air into the rooms of your home.
The collar or apron can be used as an 18 inch template.
Keep the duct centered between the roof joists.
2 buy a unit that can create 20 to 40 air changes per hour.
A typical down draft swamp cooler.
Use the cooler duct and a pencil or marking pen to mark the shape of the duct on the inside of the roof.
The included flex duct length is 7 feet.
This swamp cooler installation will require a section of rigid ducting down through the roof with an end cap and a round sheet metal collar the same size as the flex duct.
Also this version is easier to perform maintenance on.
Fit the collar into the port on the side of the cooler with the section of duct extending horizontally above the duct riser at the roof.