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6 Reasons to Call a Pro for Duct Sealing

6 Reasons to Call a Pro for Duct Sealing

Your HVAC system isn’t working as effectively and your energy bills are rising; these are good reasons to call a pro for duct sealing. If leaky ducts are causing uncomfortable temperatures, you may be tempted to locate the issue and attempt a DIY fix. However, an air duct issue requires experience to properly address. One mistake can compromise the performance of your entire heating and cooling system. 

Here are 6 reasons to call an experienced contractor for duct sealing:

1. Heat Loss Can Be Hard to Control

Forced-air heating and cooling systems are notorious for their inefficiencies. The typical home loses 20% to 30% of conditioned air due to duct leaks, according to the U.S. Department of Energy.1 Up to a third of the energy used to heat or cool your home may be wasted. Holes, cracks, and loose connections can occur anywhere in the system. A professional is trained to spot them so any leak points can be addressed.

2. Your Comfort and Safety Are At Risk

Duct leaks prevent your HVAC system from evenly distributing conditioned air throughout your home. As a result, some rooms may be uncomfortably cold and others too warm. Leaky ducts can also harbor viruses, bacteria, and other harmful microorganisms. They can let in moisture and cause issues with moisture control. Therefore, mold can form deep within your ductwork, causing major issues with indoor air quality and potentially damaging expensive equipment.

3. Professionals Work Quickly

Manually inspecting every duct in your home would require breaking apart walls and ceilings. Duct sealing professionals use computer-controlled systems to map out your ductwork without demolition, which dramatically reduces repair costs and saves time. A technician knows the problems to look for and takes steps to seal any gaps or holes. This would take a while if you don’t have experience, but years of training enable a contractor to get the job done quickly.

4. DIY Fixes Don’t Last

Putting a bandaid on the problem just means you’re stopping or reducing air leakage temporarily. Sooner or later, the material you put on a duct will come loose or break. One option is mastic, which is a gooey paste that can be difficult to work with and requires a lot of cleanup. It works only in areas that can be easily accessed; it’s impractical for ductwork hidden behind walls as demolition requires even more effort.

Duct sealant tape (not duct tape) is another popular quick fix. Made of aluminum foil, it is designed for use with HVAC systems and is easier to put in place than mastic. However, the tape tends to lose adhesion over time. Like mastic, it too tends to eventually fail. These temporary solutions must then be replaced, which requires more time and effort that could have been saved with a permanent repair.

5. A Pro Can Find Other Ductwork Problems

Aging ductwork or improperly installed ducts tend to have more than one problem. Calling in a pro for duct sealing is an opportunity to find and correct issues beyond duct leaks. They can discover problems such as sagging, bent, or disconnected ducts. Other concerns can include poor insulation or a lack of insulating materials, which can increase heat gain and heat loss, and poor ductwork design that restricts air movement. If such issues are present, they must also be addressed.

6. The Pros Use Effective, Non-Invasive Duct Sealing Methods

Locating and assessing a leak is just the beginning. A professional can then use materials to make your ductwork airtight from the outside. However, they have access to another solution—Aeroseal. This material is blown into ductwork through an access point and binds to small gaps and spaces from within. However, these leaks must be less than ⅝ inches in diameter for Aeroseal to work. The material takes two hours to dry, at which time small air leaks are filled without having to break through building materials, perform repairs, and clean up.

Call Waldrop to Schedule a Professional Duct Sealing

Our licensed professionals use non-invasive methods to address duct leaks and the issues they cause. They use advanced testing equipment and employ Aeroseal and other highly effective methods of stopping air from escaping. Additionally, they’re trained in air duct cleaning and ductwork replacement. Our team is focused on providing permanent solutions and helping you save time and money. 

To learn more about our specials, financing, and family service plans or to schedule duct sealing, contact us online or call (864) 536-0887.


  1. https://www.energystar.gov/saveathome/heating_cooling/duct_sealing 
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