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Dryer Venting Do’s and Don’t

Dryer Venting Do’s and Don’t

A collection of common misconceptions about dryer venting.

No! Never ever use a plastic duct to vent your dryer! In fact, it is against many local building codes to use a plastic duct on a dryer. Modern dryer heating elements are very powerful and can ignite the lint accumulated inside the plastic duct and the dryer, starting a house fire.

Dundas Jafine offers a variety of ducting options that will keep your home and family safe:

You can use a 4-inch flexible aluminum foil duct that is UL 2158A listed and marked for safe dryer venting. Look for a product that is constructed from heavy duty, fire resistant aluminum foil with a high density, corrosion resistant wire helix. Remember that only ducts 8 feet or less can be UL listed and marked.

Dundas Jafine’s BTD48 is ideal for an easy installation and piece of mind.

You can also choose a semi-rigid aluminum duct where code requires an all aluminum product. UL listed and marked ducts are the better choice, as these ducts have been tested for total non combustibility with a maximum operating temperature of 435°F.

Dundas Jafine’s MFX48 is 4-inch by 8 foot long and is UL approved and safe for dryer venting.

BEST ★★★ :
Fire proof and easy to clean, a 4-inch fire proof aluminum pipe is the preferred venting option for optimum performance. Where changes of direction are required, use 4-inch aluminum elbows.

Dundas Jafine’s Aluminum Snap Lock Pipe is fire resistant and easy to clean, a solid pipe. Remember to pick up a couple of 4-inch clamps to complete your installation. Using a Recessed Dryer Vent Box will also save space in your laundry room by allowing the dryer to be pushed up against the wall. The box also completely protects the duct from being crushed and lint build-up is minimized due to the limited kinks and bends.

This is a common misconception. Your dryer only has the power to push that heavy, wet lint so far, so it’s inevitable that some of it will remain behind in the vent pipe. A buildup of lint in the vent reduces the air flow and affects your dryer’s performance, so it should be cleaned out periodically. How often is a matter of how much use your dryer gets. A typical family household should consider cleaning it every six months.

Dundas Jafine’s ProClean Drill Powered Duct Brush helps to remove lint build up and debris in your dryer duct. This brush can be used manually or attached to a drill for increased power.


This one is a bit tricky because it depends on the location of the dryer. If the duct is in a heated space, such as the inside of the house or in a finished basement, then no, it doesn’t need to be insulated. But if it’s running through a crawl space, unheated basement, attic or other unconditioned space where there’s the potential for freezing, then it is recommended to insulate the duct. Insulation will help prevent the moisture in the exhaust air from freezing inside the pipe, which would later lead to condensation and potential moisture problems when the pipe warms up and the ice melts.

Dundas Jafine’ Duct Insulation Sleeves are ideal for insulating rigid or semi-rigid round ducts. This product will reduce heat and cool loss and condensation build-up.


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