7:30am-5pm Monday-Friday | 4300 Creek Road
Blue Ash, Ohio 45241
call us (513) 621-4620
The National Difference: Longest running Bryant dealer in Cincinnati

Why Is Water Dripping from My Vents?

Water leaks are a major concern for any homeowner—left alone, they can cause significant structural damage and encourage the growth of mold. Even a minor leak, such as water dripping from the vents, can have consequences, and it is best to repair the problem immediately. There are several possible situations that could cause water leaks at the vents, and this guide can help you find the cause.

At National Heating & Air Conditioning, we have over 80 years of experience in the HVAC industry and we can help our customers in the Cincinnati area solve any type of HVAC problem. We offer a wide selection of services, including maintenance, repairs, system replacements, and new installations.

Call us today at (513) 621-4620 for help with all of your heating and cooling problems in Cincinnati!

Condensate Drain Problems

If your air conditioning system is installed in the attic or on an upper floor, problems with the condensate drain could allow water to overflow the drip tray, traveling to the ducts or vents.

The condensate drain system collects water removed from the air during the cooling process, and disposes of it into a drain. If the drip tray is leaking or the condensate drain is clogged with algae, dirt, or minerals, water will leak from the system.

To solve the problem yourself, clean the drip tray and check for leaks. Unclog the condensate drain line using a mixture baking of soda and vinegar or a stiff wire.

Frozen Coil

On extremely hot days, the evaporator coil of an air conditioner can freeze, especially on poorly-maintained systems. After power is cut and the coil begins thawing, the resulting water can overwhelm the condensate drain, allowing it to migrate to the ducts or vents on a system installed in an attic or upper floor.

When thawing a coil, have towels ready to absorb excess water, and make sure that the condensate drain is clean.

Roof or Plumbing Leaks

Leaks in the roof or plumbing above the ductwork can allow water to travel down the ducts to the vents. If you can see the affected ductwork, follow the water tracks back to the source of the leak.

If it is indeed a roof or plumbing leak, call the appropriate contractor for repairs.

Condensation in the Air Ducts

Both in the heating and the cooling season, condensation can form either on the outside or the inside of ducts that are poorly insulated. This is the most common cause of water leaking from the HVAC vents. If you can access the affected ducts in the attic, basement or crawlspace, you can insulate the ducts yourself using duct insulation, or standard fiberglass secured with tape.

Often, however, it is best to have a professional insulate the ducts, because if they are poorly-insulated, they probably leak, as well. Have a professional seal and insulate the ducts, especially if they are hard to access.

HVAC Service in the Cincinnati Area

For help with condensation problems in your HVAC system, contact National Heating and Air Conditioning at (513) 621-4620 today!


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The information on this website is for informational purposes only; it is deemed accurate but not guaranteed.
It does not constitute professional advice. All information is subject to change at any time without notice. Contact us for complete details.