The Benefits of Sealing HVAC Ducts: An Expert's Perspective

Learn about the importance of sealing air ducts from an expert in the HVAC industry. Discover the various methods for sealing ducts from the inside and why it should be a priority for homeowners.

The Benefits of Sealing HVAC Ducts: An Expert's Perspective

As an expert in the HVAC industry, I have seen firsthand the impact that properly sealed air ducts can have on a home's energy efficiency and overall comfort. Many homeowners may not realize it, but sealing air ducts is a crucial step in ensuring that their HVAC system is functioning at its best. In this article, I will discuss the various methods for sealing ducts from the inside and why it is important to prioritize this task.

The DIY Approach

If you are a handy homeowner, you may be tempted to tackle the task of sealing your air ducts yourself. While this can save you money in the short term, it can be a challenging and time-consuming process, especially for beginners.

To determine if your ducts need sealing, you can use a thin piece of toilet paper or an incense stick to check for leaks while your system is turned on. If the smoke or paper moves irregularly, it is a sign that you have a leak in your ducts. For those who prefer to use adhesive tape, aluminum foil tape is an effective option for sealing ducts. However, if you suspect that your HVAC system is not functioning properly or that certain areas of your home are not maintaining consistent temperatures, it is best to hire a professional to seal your ducts from the inside.

The Benefits of Sealing Air Ducts

Aside from improving airflow efficiency, there are many other benefits to sealing air ducts. For one, it can help reduce energy consumption and lower utility bills.

Additionally, properly sealed ducts can improve indoor air quality and reduce symptoms for those with allergies or asthma. It also helps to maintain consistent temperatures throughout the home, ensuring maximum comfort for all occupants. But perhaps the most significant benefit of sealing air ducts is the long-term cost savings. While hiring a professional to seal your ducts may come at an additional cost, it can save you money in the long run by improving the efficiency of your HVAC system. In fact, it has been estimated that it would take 3 to 4 years to recoup the cost of hiring a company like Aeroseal to seal your ducts.

The Best Methods for Sealing Ducts

When it comes to sealing air ducts, there are a few different methods that can be used.

High-quality adhesive tape, putty, and Aeroseal sealant are all effective options, each with its own advantages and disadvantages. Butyl adhesive tape and oriented polypropylene (OPP) tape are popular choices because they create a strong seal around duct joints and offer durability. However, it is essential to note that adhesive tape should only be used as a temporary solution. Over time, it can lose its effectiveness and even reduce the lifespan of your HVAC system. For a more permanent solution, putty or Aeroseal sealant is recommended.

Why Hire a Professional?

While DIY methods may seem appealing, hiring a professional to seal your air ducts from the inside is often the best option.

Not only do they have the necessary expertise and equipment to get the job done correctly, but they can also identify and seal hidden leaks that may be difficult for homeowners to access. At McGowan's Heating & Air Conditioning, we specialize in sealing air ducts from the inside for both residential and commercial properties. Our team of professionals has years of experience and can ensure that your ducts are sealed properly and efficiently.


In conclusion, sealing air ducts is a crucial step in maintaining the efficiency and comfort of your HVAC system. Whether you choose to tackle the task yourself or hire a professional, it is essential to prioritize this task to reap the many benefits it offers. Don't let leaky ducts go unnoticed - take action and seal them from the inside for a more efficient and comfortable home.

Candice Fedak
Candice Fedak

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