On Wednesday, November 23, 2016 at 7:01:14 PM UTC-6, wrote:
On Tuesday, June 15, 2004 at 7:54:48 PM UTC-7, TCS wrote:
Is it possible to connect a swamp cooler to the ducting of a home heating
system so that the cool air will be distributed throughout the house?


Answer: Yes, it is possible and works well, but only so long as other parameters are met.

Air flow from a Swamp cooler/Evaporation cooler is much higher than furnace heated air. In order for this to work properly you'll likely need the heavier rectangular shaped duct work from the furnace with a large circumference and not the flex type ducting. Flex ducting generally runs smaller diameter duct and will not allow for the 4500 to 6500 cfm air flow of a swamp cooler.

Also, a swamp cooler needs to have adequate exhaust flow and the best way for it to be effective is to vent the air into the attic so it tends to cool the super heated air from the sun beating on the roof out the gable vents. There are up ducts made that work nicely for that purpose that can be closed easily for the winter months without having to go into the attic to do it.

If you have the smaller circumference flex ducting you'll be better served with a regular down draft from the roof mounts swamp cooler and then rely on up duct for distribution instead of trying to use the furnace ducting. Up ducts can be adjusted for air flow so the rooms you need more cooling in can get more air.

You're too late, 12 years ago, TCS connected his swamp cooler to his home heating ductwork. A swamp cooler monster crawled out of the swamp cooler, traveled through the ductwork to TCS's bedroom and ate him. He is survived by a wife, three ex-wives, 32 children, 14 circus midgets, a heard of bison and 435 gerbils. The gerbils really miss him. It was a real tragedy. (._. )( ._.)

[8~{} Uncle Swamp Monster