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Automatic Make-Up Air Damper

October 2009

The Broan Make-Up Air Damper used in conjunction with Broan
SmartSense

and select BEST

range hoods ensures proper ventilation

in the home by effectively balancing indoor air pressure only when air
is being exhausted.

Air intake and exhaust are equalized

•

Ventilation devices function properly

•

Helps maintain the home’s integrity

•

Enhances energy efficiency

•

Forces warm/humid air into wall cavities, resulting in potential

•

mold/mildew and structural issues

Unconditioned and typically uncontrolled air is

•

pushed into the

home, resulting in increased energy costs

Effects of Positive Air Pressure (supply systems)

Exhaust fans unable to work at full, rated capacity

•

Unconditioned and typically uncontrolled air is pulled into the

•

home, resulting in increased energy costs

Draws hot/humid air inside, causing mold/mildew

•

and structural damage

Effects of Negative Air Pressure (exhaust systems)

Optimal Balanced Air Pressure

Causes of Unbalanced Air Pressure
Supply ventilation systems push air into the home causing positive
pressure. Conversely, when ventilation fans and range hood fans exhaust
stale/polluted indoor air to the outside, negative air pressure develops
unless the exhausted air is replaced by fresh outdoor air.

Broan. The leader in residential ventilation.

Broan-NuTone, LLC, 926 W. State Street, Hartford, WI 53027 • 800-558-1711

In Canada call 877-896-1119

www.Broan.com

Complete Application Guide

available at www.broan.com or

www.bestrangehoods.com

powered attic ventilators and trash compactors.

NuTone

is America’s leading brand of residential built-in convenience products including door chimes, central vacuum

systems, stereo intercom systems, ceiling fans, home theater speakers, medicine cabinets, ironing centers and ventilation fans.

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