Connect your dryer to its power sources and turn it on.
Outside dryer vent on roof.
Once you have done this turn off your dryer.
Unlike the vents shown above left the dryerjack affects airflow by less than 01 water column inches of pressure.
Run your dryer until no debris comes out of the outer vent making sure that the air flow is not restricted.
The problem with attics the attic is usually colder than the rest of the house during the winter and that can create a problem for a dryer vent.
You can now replace the outer vent cover.
Check with your appliance dealer or local building inspector for recommendations about the best roof vent cap to use.
Vent dryers outside venting the dryer outside in cold weather wastes a lot of heat.
The warm moist air inside the vent tends to.
But we don t recommend it for two reasons.
Considering that back pressure higher than 6 wci is generally recognized as inefficient you can see that venting through the roof with non dryer specific vents is immediately problematic.
Dryerjacks are the first roof vents designed to meet the more stringent venting requirements of dryer exhaust systems.