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How Does Duct Sealing Work?

By All-Temp Heating & Cooling

Date Published: January 29, 2025

Proper airflow is essential; even the smallest leaks in your ductwork can disrupt your comfort at home. Duct sealing eliminates these leaks, ensuring your HVAC system operates at its best.

Whether you have inconsistent temperatures, higher energy bills, or dust buildup, duct sealing services can be the solution you need. This service can restore efficiency and improve indoor air quality.

Air duct sealing benefits your home by reducing energy usage. Understanding what happens when a professional seals air ducts can help you determine your home’s comfort and efficiency.

What Is Air Duct Sealing?

Duct sealing involves sealing gaps, cracks, and joints in your HVAC system’s ductwork so that air reaches your living spaces efficiently. This process ensures that heated or cooled air circulates through your home to maintain comfort and reduce energy waste.

Traditionally, these minor openings are closed using tape, mastic, or insulation. Technicians place a strip of foil tape along straight areas. At bent elbow joints, duct mastic can be applied with a paintbrush. Foil-faced fiberglass insulation can be used, but it requires several steps:

  • Measuring the size of the duct opening
  • Cutting the material
  • Wrapping it around the duct
  • Applying foil tape to close the seams

DIY methods can be effective, but it’s best to leave this task to trained professionals.

Neglecting these faults in your ductwork can lead to many undesirable consequences. Investing in air duct sealing services will save money, enhance your comfort, and bring several other benefits to your home.

How Duct Sealing Works

There are a few ways that HVAC technicians can seal air ducts. The most essential aspect is to keep any air from escaping and to securely seal and insulate the metal ducts. Proper insulation is crucial to protect your system from the extreme temperature changes your attic experiences throughout the seasons.

This combination of insulating and sealing air ducts helps keep consistent airflow and minimizes energy waste. Your home remains comfortable regardless of the outdoor temperature.

How Technicians Identify Leaks

Detecting leaky air ducts can be challenging because ductwork tends to be hidden within walls and other hard-to-reach areas. Most homes have 30 to 90 feet of ducts running through the ceiling, walls, and basement.

These hidden locations make it harder to inspect the ducts and pinpoint leaks. Experienced HVAC technicians know advanced techniques that allow them to locate the exact source of an air leak.

Additionally, there are signs you can look for that indicate problems within your ductwork. Those signs include:

  • Higher energy bills
  • Low airflow
  • Cold or hot spots on walls
  • Poor indoor air quality
  • Frequent HVAC repairs

If these signs sound familiar, your home could benefit from professional air duct sealing services.

How Long Does Air Duct Sealing Last?

The lifespan of air duct sealant depends on many factors. The system’s age, local climate, and the efficiency of your HVAC appliances impact its lifespan. Furthermore, how often you change dirty filters and schedule maintenance services can extend or shorten its lifespan.

Get Professional Help For Your Leaky Ducts

Experience the benefits of air duct sealing when you contact our team. Get in touch with All-Temp Heating and Cooling for air duct services. Call today to schedule your appointment.

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