Contact Us







    (800) 482-8224

    What is Dirty Sock Syndrome and How Can You Avoid It ?

    What is “Dirty Sock Syndrome”? Dirty Sock Syndrome is caused by bacteria growing on HVAC system coils, and refers to the unpleasant odor that comes from your residential or commercial heat pump coils.

    ACHR News (Air Conditioning | Heating | Refrigeration) links DSS to these three main causes:

    “Cooling coils and other AC components are not made in sterile environments, meaning that microbes cover all of their parts along with a small amount of lubricant.”

    “During the first cooling event after installation, condensate brings life to the microbes, which initially use the lubricant as an initial food source.” Microbial decay (better known as “rot”) is the culprit of the foul stench that smells like a dirty sock.

    Did you know? According to ASHRAE coil cleaning can save 10-25% of operation costs!

    During certain times of the year when a heat pump may warm in the morning hours and then cool at noon and/or later hours, the system can produce condensate from noon onward, fueling growth for up to 16 hours – only to release odors and toxins during the next morning’s warming hours. Heat pump coil temperatures are often not sufficient to kill proliferating microbes. Those that may die simply serve as a future food source for continued proliferation.

    How Can You Get Rid of Dirty Sock Syndrome?

    The best way to get rid of the musky aroma is by thoroughly cleaning the coils in the HVAC system.

    Our first step is always to schedule an on-site visit to take a look at the setup and size of the air handler unit. We also take this opportunity to check for any visible mold growth in the ductwork.

    The second step is the “full system and evaporator coil cleaning, which involves: flushing the coils, determining the cause of the syndrome, as well as the cleaning and/or applying a sealant.

    How Can You Avoid Dirty Sock Syndrome in the Future?


    The best way to avoid dirty sock syndrome from occurring in the first place is to ensure that your HVAC system is serviced on a regular basis. After all, a good offense is always the best defense – even if the syndrome has already occurred, a thorough cleaning can prevent the problem from happening again.

    Call 800-482-8224 to schedule an appointment with an Amazon Air Duct Cleaning Professional today!

    author avatar
    amazonairpro
    27 August, 2021
    HVAC technician inspecting moldy air vent 11 July, 2026
    Mold on Air Vents: What NY, NJ, CT Homeowners Must Know

    Discover essential info about mold on air vents. Learn how to recognize, address, and prevent mold issues in your New York, New Jersey, or Connecticut home.

    Homeowner examining air quality testing device 10 July, 2026
    Air Quality Testing Cost: What Homeowners Pay in 2026

    Discover air quality testing cost for homeowners in 2026. Learn what influences pricing and how to protect your indoor environment.

    Homeowner inspecting HVAC air ducts 9 July, 2026
    Noise in Air Ducts: Causes and Fixes for Homeowners

    Discover the causes of noise in air ducts and practical fixes for homeowners. Quiet your HVAC system and enhance comfort today!

    Man inspecting home air ducts with tools 8 July, 2026
    How to Plan Preventive Duct Maintenance at Home

    Learn how to plan preventive duct maintenance to enhance indoor air quality, save money, and extend the life of your HVAC system.

    Woman cleaning black dust from air vent cover 12 July, 2026
    Black Dust Around Air Vents: Causes, Cleaning, and Health Facts

    Discover the causes of black dust around air vents and learn effective cleaning methods. Keep your home healthier and dust-free today!

    HVAC technician inspecting moldy air vent 11 July, 2026
    Mold on Air Vents: What NY, NJ, CT Homeowners Must Know

    Discover essential info about mold on air vents. Learn how to recognize, address, and prevent mold issues in your New York, New Jersey, or Connecticut home.

    Homeowner examining air quality testing device 10 July, 2026
    Air Quality Testing Cost: What Homeowners Pay in 2026

    Discover air quality testing cost for homeowners in 2026. Learn what influences pricing and how to protect your indoor environment.

    Homeowner inspecting HVAC air ducts 9 July, 2026
    Noise in Air Ducts: Causes and Fixes for Homeowners

    Discover the causes of noise in air ducts and practical fixes for homeowners. Quiet your HVAC system and enhance comfort today!

    Man inspecting home air ducts with tools 8 July, 2026
    How to Plan Preventive Duct Maintenance at Home

    Learn how to plan preventive duct maintenance to enhance indoor air quality, save money, and extend the life of your HVAC system.