Whether you’re doing a complete remodel or partial remodel, don’t overlook the need for effective kitchen ventilation. Scientists have found that the air in kitchens, especially those with gas appliances or unvented fans, is often the most polluted indoors.
A good ventilation system makes the kitchen more enjoyable, especially in the summer. These tips for choosing a new fan will help you remove the cooking heat, humidity and odors quickly and effectively.
Venting Requirements
Look inside the cabinet above or beside the stove to see if there is an existing duct that moves the exhaust air outdoors. If it’s not present, you’ll have to add one, since an unvented fan simply recirculates the air.
The duct should exit through the roof or an exterior wall. Kitchen fans that exhaust into the attic increase its heat and humidity, which can lead to mold growth and attract insects. An HVAC contractor can modify the existing ductwork to match the new kitchen ventilation fan, extend it through the roof, or install new ducts altogether.
Sizing the Exhaust Fan
The fan should be able to move at least 40 cubic feet per minute (CFM) per foot for an electric range and 100 BTUs (British thermal units) from a gas stove. You may need to consult your owner’s manual or the manufacturer’s website to learn the BTU capacity for your stove.
At a minimum, an updraft fan should cover the width of the range. Ideally, it should extend slightly over the edges of the range to capture all the gases emanating from the stove. Make sure it will extend halfway over the front burners, but not so far out that you’ll bump into it.
You can also have sheet metal contractors design and build custom fans that will enhance the appearance of the kitchen, and provide exhaust removal for conditions unique to your range or oven.
Effective kitchen ventilation is part of the strategy for improving indoor air quality and lowering cooling bills during the long summers. To learn more, contact Hansberger Refrigeration and Electric Company, providing trusted HVAC services for Yuma-area homeowners.
Our goal is to help educate our customers in Yuma, Arizona about energy and home comfort issues (specific to HVAC systems). For more information about kitchen ventilation and other HVAC topics, download our free Home Comfort Guide or call us at 928-723-3183.
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