When you turn on your air conditioning unit, you expect it to deliver cool air throughout the house with no fuss. If, however, you’re surprised by an unpleasant odor emanating from your air vents, you’ll have to track down the source of the smell to determine next steps. Here’s a closer look at three potential reasons your HVAC system may stink.

Potential Sources of a Smelly HVAC System

1. Mold & Mildew

Molds and mildews typically result from excessive moisture in ducts, from leaks, or from poor drainage near an outdoor air conditioning unit. Regular HVAC tuneups, filter replacement, and a dehumidifier in the home will help prevent harmful mold and mildew growth. Work with a trusted HVAC contractor to repair leaks and drainage problems to rid your system of musty molds and mildews.

2. Pests

Your home’s ventilation system can shelter birds and rodents. When these pests die inside your ductwork, their decomposing bodies will make the air in your home smell like rotting trash. Thorough duct cleaning will be required to remove the source of this smell. If your system is gas-powered, a sulphuric smell may indicate a gas leak. Open the windows, and make an emergency call to your gas utility if you suspect a gas leak.

3. Wiring Problems

A burning smell indicates a wiring problem or an overheating motor. Don’t let your air conditioner continue to run. Shut it off immediately, and call a repair technician to inspect your system as soon as possible.

From routine maintenance to emergency air conditioner repair, you can rely on Advantage Air to keep your HVAC system in top shape. Serving Lexington, KY, for over 20 years, this HVAC contractor provides affordable, reliable residential and commercial service for top brands. To learn more about what they can do for you, visit them online, or call (859) 559-6409 to speak with their friendly and knowledgeable staff.