How to Adjust an A/C Damper


Adjust A/C and furnace damper. heating or cooling. Summer or winter.

If you experience temperature inconsistencies in summer and winter, your damper must be at fault. Dampers should be adjusted for some reasons especially when there are hot or cold spots at home. While some houses have automated dampers, others may have manually-operated dampers that require hands-on tuning.

Want to learn how to adjust your A/C dampers and improve your home’s comfort? Then, continue reading this article.

What Are Dampers?

First things first! You must know what dampers are before dealing with them.

Dampers are plate-shaped device which opens or close to regulate the amount of air that passes through the duct and vents. Making adjustments on the damper affects the indoor temperature by pushing cold or hot air into some areas or sections of the house. By adjusting the damper, you can reduce or increase the amount of air entering every room or area of your home.

 Where Are Dampers Located?

Now, it’s time to locate the dampers. Go into your basement or attic and find the dampers. Usually, they are positioned somewhere in the “take-offs” or “branches” of the duct system. With manual-type dampers, they have either a rod that you can adjust using a screwdriver or a lever that you can turn by hand. Adjust the handle to your desired placement then tighten the nut to hold its position.

How to Adjust the Dampers

You should understand that you have to undergo a trial and error stage when adjusting the dampers. To open the damper, you should turn the lever at a position where it’s paralleled with the duct. This allows the air to flow through the ducts to its fullest. Then, adjust the lever to a position horizontal to the duct to close it.

During summer, it’s best to force the cold air into the upper portion of your home to achieve an even and efficient comfort throughout. Meanwhile, you should do the opposite during the winter months. You should force hot air in the lower areas of the house so the heat will rise itself.

If adjusting the dampers didn’t solve your temperature problem, it’s time to bring in the experts for the best solutions. Whether you have an automated or a manual-type damper, never hesitate to call in the professionals to help you deal with your HVAC problems in your residential or commercial space.

Contact us at C & K today to schedule an appointment!

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