Satisfied customers
8 years
In business
6 months
Service warranty
Did you know?

According to the US Department of Energy, typical duct systems can lose up to 30% of conditioned air due to leaks and poor connections.

Did you know?

According to the Washington State Department of Health (DOH), direct contact with fiberglass or inhalation of dust-containing fiberglass can cause irritation to the throat, eyes, skin, and nose.

Did you know?

Several studies have shown that when fiberglass duct liner is exposed to dust, dirt, and moisture, it creates an ideal environment for the growth of mold, fungus, and harmful bacteria like Legionella. In addition, it significantly affects the operation of the air duct, reducing its capacity.

Clear Signs You Have Mold Infestation in Your HVAC & Vents

Allergic Reactions

  • Itchy eyes, nose, and/or throat
  • Sneezing
  • Coughing
  • Excess mucus in the throat
  • Dry or rough skin
  • Runny or stuffy nose
  • Shortness of breath
  • Tightness in the chest

Respiratory Problems

  • Chronic obstructive pulmonary disorder (COPD)
  • Lung cancer
  • Asthma
  • Cystic fibrosis (CF)

Increased Energy Bills

Water Leaks or Condensation

A Musty Odor

Excessive Humidity

Silent Danger:

The Unseen Threat in Your Ventilation

Problems You May Face Without Professional Duct Coating

Is HVAC duct coating necessary? It's a common question many homeowners have and one that's very easy to answer. Check out two key problems that a lack of air duct sealing can lead to and how a professional air duct encapsulation service from Green Ductors can solve them.


Problem 1:

Did you know that fiberglass insulation is present in 90% of American homes? While fiberglass is a common insulation material, it's also been classified as a potential cancer-causing agent. Over time, the continuous flow of air inside ductwork can cause fiberglass particles to break down. This causes the particles to circulate throughout the ductwork system and eventually enter the air you breathe in your home. The result? Terrible consequences for your health.


If you have a duct system made of fiberboard, duct encapsulation creates a protective barrier that prevents fiberglass particles from entering the indoor environment and circulating in the air of your home.

Problem 2:

The warm and often moist environment inside air ducts provides an ideal breeding ground for mold spores. Once they take hold, these spores can spread rapidly throughout the ductwork system. This not only deteriorates the air ducts but also poses a significant health risk as mold particles are circulated throughout the home. 


Duct encapsulation keeps moisture out of the ducts by sealing gaps and cracks, which stops mold from growing. This helps maintain good indoor air quality and protects your HVAC system from damage. 
Get a Free Quote

What Is Air Duct Encapsulation?

Air duct encapsulation is the process of sealing and insulating the ducts that convey heated or cooled air throughout your home or commercial space. This process involves applying a special coating that solidifies your ducts, eliminating leaks, preventing mold growth, and reducing dust infiltration. By sealing and insulating the ductwork, you can ensure that conditioned air reaches its destination without escaping through gaps, cracks, or poorly connected areas.

The essence of HVAC duct coating lies in its ability to create a cleaner, more energy-efficient heating and cooling system. By sealing leaks and adding insulation, the process minimizes the risk of pollutants and allergens entering the ductwork and circulating throughout the building. This is particularly beneficial for people with allergies or respiratory issues, as it helps maintain healthier indoor air levels. Plus, by optimizing the efficiency of your HVAC system, duct encapsulation significantly reduces energy consumption, resulting in lower utility costs. After application, the encapsulation coating dries to create a flexible, moisture-resistant, and durable layer that reduces dirt accumulation on the coated surface.

YouTube player

When Do You Need Air Duct Coating/Encapsulation?

Maintaining healthy indoor air quality and an efficient heating, ventilation, and air conditioning (HVAC) system is crucial for both commercial and residential properties. Ductwork encapsulation plays a pivotal role in achieving this. But when is air duct encapsulation necessary? Here when you should consider duct board encapsulation:

When mold is present on the surface of the ducts;
When air ducts have been contaminated with mold or fungus and need to be re-coated on the inner surface;
When your fiberboard or fiberglass ductwork is breaking down and needs to be re-adhered;
When needing to remove heavy odors from air duct systems;
When fiberglass is exposed due to poor or no edge sealing;
When you need to prevent fiberglass particles from circulating in the indoor air;
When sheet metal ductwork has oxidized and you need to prevent rust particles from circulating in the indoor air.

Get A Quote Now

We Will Provide You A Quote Over Your Phone Number & Email

    Top Benefits Of HVAC Coating/Encapsulation 

    Significantly improves indoor air quality by creating semi-gloss covering and improving air velocity and efficiency of the system.
    Reduces mold and mildew growth and seals the already existing growth.
    Enhances the overall performance of the ducts and airflow.
    Increases energy efficiency resulting in lower utility bills.
    Extends duct lifespan by reducing the load on the system.
    Protects the house from circulating fiberglass particles.

    Our HVAC Duct Coating/Encapsulation Process


    Initial Inspection

    Our expert technicians will begin the process by conducting a thorough inspection of your air duct system. This inspection helps us identify any existing damage, leaks, or contaminants that may be affecting the performance of your ducts. We will also assess the overall condition of the ductwork to determine the best course of action.


    Sealing and Encapsulation With Mold-Resistant Duct Coating

    Prior to encapsulation, your ducts need to be cleaned. This step is crucial to ensure that the encapsulation process is carried out on a clean and disinfected surface. If you haven’t done so yet, our professional duct cleaning team will be happy to help. We will perform a comprehensive cleaning to remove any dust, debris, and mold that may have accumulated in the system over time. By doing so, we prevent any existing contaminants from being trapped within the encapsulated ducts.


    Once the ducts are cleaned, our technicians will seal any visible leaks or gaps in the ductwork using high-quality sealing materials. This helps to prevent air leakage, ensuring that conditioned air reaches its intended destination without wastage.


    Next, we apply our advanced encapsulation solution, a water-based protective coating formulated with an EPA-registered preservative. This specially formulated material creates a durable seal around the inner surfaces of fiberboard, fiberglass, and sheet metal ducts, effectively preventing any air leakage, improving insulation, and reducing energy loss. The product also effectively fights existing mold and prevents the formation of new mold, mildew, and fungus on the coated surface.


    Verification and Testing

    After the encapsulation process is completed, we conduct a final verification to ensure that the duct system is properly sealed and insulated. Our technicians use state-of-the-art equipment to measure air pressure and temperature differentials to detect any remaining leaks. This testing phase guarantees that your newly encapsulated ducts are working optimally to deliver clean, conditioned air throughout your property.


    Post-Process Recommendations

    As part of our commitment to providing exceptional customer service, our team will provide you with valuable recommendations on maintaining the performance and efficiency of your newly encapsulated ducts. We will advise you on regular maintenance practices, such as changing filters, cleaning vents, and scheduling periodic inspections to ensure the longevity of your system.

    Get a Professional Consultation

    Want to improve the air quality in your home and solve problems with your HVAC system? Leave it to the professionals! Contact us now for a consultation and quote on our duct encapsulation/coating services.

      Frequently Asked Questions

      We know that there is always room for questions. We have provided answers to the most frequently asked questions from our clients. If you don't see the answer you're looking for, give us a call and one of our expert team members will be happy to assist you!

      Why is duct encapsulation so essential?

      Approximately half of the ductwork is internally lined with fiberglass. Over time, these fiberglass linings degrade due to air abrasion, and fibers may loosen during improper cleaning processes that use abrasive systems. In such cases, fiberglass particles can circulate through your ductwork and into your home. Plus, sheet metal ductwork gradually oxidizes due to the moisture from your air conditioning unit, leading to the formation of a white powder pollutant. This pollutant is then dispersed throughout your home, worsening asthma and allergies. In addition, encapsulation helps to maintain a dry environment within the ductwork, stopping mold growth before it starts.

      How long does the HVAC coatings process take?

      The duration of the process can vary depending on the size of your ductwork and the job’s complexity. Typically, we complete small projects in 1 business day, while larger projects may take longer.

      Why should I choose Green Ductors for the encapsulation of my air ducts?

      Here are the top reasons why customers in NY and NJ choose our services:

      • Our team has years of experience in duct encapsulation and coating services.
      • We adhere to the highest standards, using only certified materials and methods.
      • We pride ourselves on providing exceptional customer service and exceeding our customers’ expectations.
      • Our portfolio is packed with success stories from satisfied customers.

      How much does air duct encapsulation cost?

      The air duct coating cost can vary depending on the size of your ductwork and the extent of the work required. We’ll provide you with a detailed estimate before starting the process. Simply request a FREE quote.

      Find Industry-Leading Duct Coating Service Near You

      In the NY and NJ areas, we are a highly qualified air duct encapsulation/coating company with a proven track record. Thanks to our customer-centered approach and commitment to excellence, we have many happy homeowners and business owners to our credit. We are trusted. We are chosen.

      Book a consultation

      Want to know more about our services or need expert consultation?

      Just fill out the form below and one of our experienced team members will get back to you promptly.

        Your form has been succesfully submitted!
        Please, check if the info you provided is correct: