Not Removing Odor or Vapor - Checking Installation

Does the filter need to be cleaned or replaced?

For optimal performance, operate the downdraft ventilation system with the filter properly installed. The filter should be cleaned often to avoid grease buildup.

CLICK HERE for more information on cleaning the downdraft vent grille, grease filter, and ventilation chamber.

Is there air movement, a draft, or restriction in the room?

Other air movement devices, such as ceiling fans, air conditioner registers, etc., can create air currents that interfere with downdraft ventilation. To improve the performance of the downdraft vent system, turn off or limit the device creating the air currents.

The air that is exhausted by the unit must be replaced. If a room or house is too "tight," the unit may not vent properly, and more air will need to be introduced into the environment. Some air conditioning and heating units do allow for make-up air.

IMPORTANT: Observe all governing codes and ordinances when installing this product.

Adjacent Cabinets:

Cabinets closer than the minimum distance allowed can create dead air pockets that impair performance. For maximum performance, the recommended distance to adjacent cabinets or walls is 6". Refer to the Installation Instructions for complete details.

Verify the downdraft ventilation system is installed correctly:

Refer to the Installation Instructions for more detailed information.

What is the length of the vent system?

To provide efficient performance, the length of the vent system and the number of elbows should be kept to a minimum. The maximum equivalent length of the vent system is 60 ft (18.3 m). To achieve best performance at altitudes above 4,500 ft (1372 m), reduce the recommended vent run by 20%.

Was the correct vent material used?

• Use a 26-gauge minimum galvanized or 25-gauge minimum aluminum metal vent. Poor-quality pipe fittings can reduce airflow. A flexible metal vent is not recommended.
• NOTE: Local codes may require a heavier gauge material.
• If local codes allow, metal ducts may be reduced to 30-gauge galvanized steel or 26-gauge aluminized steel. This reduction is based on information in the International Residential Codes Section M1601.1 (2006 edition).

How many elbows were used?  

• Use no more than three 90° elbows. 
• Do not install two elbows together. If more than one elbow is used, ensure there is a minimum of 18" (45.7 cm) of straight vent between them.
• If an elbow is used, install it as far away as possible from the hood’s vent motor exhaust opening.
• Elbows too close together can cause excess turbulence that reduces airflow.
• Do not use a 5" (12.7 cm) elbow in a 6" (15.2 cm) or 3¼" x 10" (8.3 x 25.4 cm) system.

Additional Suggestions:

• Do not reduce to a 5" (12.7 cm) system after using 6" (15.2 cm) or 3¼" x 10" (8.3 x 25.4 cm) fittings.
• Avoid forming handmade crimps. Handmade crimps may restrict airflow.
• Use a vent cap for proper performance. If an alternate wall or roof cap is used, be certain the cap size is not reduced and
• Vent clamps are used to seal all joints in the vent system.
• Use caulking to seal the exterior wall or roof opening around the cap.