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Duct Sealing


Ducts are one of the most important elements of your HVAC setup that determines the efficiency and air quality you're getting but are often overlooked. Ducts in an improper state can cause various unexpected issues and inconveniences. The reason why they're often overlooked is their positioning which is often above the roof or some other places we don't bother to check. Duct sealing is a great way to have the duct thoroughly checked and maintained for the best performance.

We at Williams Plumbing, Heating, & Air, provide all kinds of services for HVAC systems, air quality improvements, and all comfort options for you. We also offer all duct works including duct installation, maintenance, and duct sealing services. With over 45 years of professional experience, our teams of experts have been serving the people of Guilford County with dedication and utmost priority for your satisfaction.


Duct sealing ensures that your whole HVAC system will work as intended, with proper efficiency. A properly running HVAC won't be able to deliver the best performance with faulty ductwork. Moreover, damaged ducts can lead to various other problems like air leaking, airflow hindrance, dusty indoor air, and a higher electricity bill in general. Ducts get damaged due to continuous and rapid fluctuations of temperature and pressure, which degrades the material integrity. This also depends on how the duct is placed, and the type of material being used. After a certain time, tear and leakage occur in ducts which ruin the efficiency.

Although it's our job to determine if the duct should be repaired or replaced, by detecting some signs, you can determine if you need a duct sealing service. For example:

  • Temperature and airflow fluctuation
    Damaged ducts often hinder the airflow, or leaks it into ineffective spaces, which causes fluctuations in the expected airflow or temperature. If you're suddenly experiencing such issues and your HVAC system itself is okay, you might need duct sealing.
  • Increased electricity bills
    Again, if your HVAC is working properly, and you're still getting a higher electricity bill, it means the energy consumption is getting higher due to improper ductwork, which is getting lost and you need duct sealing to deal with this.
  • Dust and pollutant presence
    Damaged ducts leak air that doesn't go through the filtration systems installed on the opening. This leaked air contains pollutants like dust and pollen, which gets into your room without any trouble even if you have filters installed. So, if you're experiencing a higher amount of pollutants in your indoor air, and if your filter is working fine, it means the duct needs servicing.
  • Unexpected humidity level
    If you're experiencing lower humidity even if you have a humidifier installed, or alternatively, if you're experiencing higher moisture levels with a dehumidifier installed, chances are your ducts are the reason for this issue.


Duct sealing is generally more difficult than conventional issues, as you need to inspect the whole duct to check where's the issue, take into account the material integrity, and so on. It requires measurement, technical knowledge, and a good deal of hard work. To ensure proper sealing, various methods and steps are required, sometimes including welding and other heavy tasks which are extremely difficult to do alone. All these call for professional help, and that's what we're here for.

Our teams of experts can check and do a proper duct sealing procedure in a short time and get it running smoothly again. Whether you need a new duct or just a straight-up repair job, we can provide all types of services you need. Duct issues shouldn't be neglected, as they lead to various other inconveniences and sometimes, damages to other systems. Call us any day of the week to get an appointment, and our teams of experts will be at your home in no time.

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Julia Costas

I just had my central air conditioning replaced and am extremely happy with my experience. Anthony did the initial visit and was exceptional in explaining what needed to be done. Sebastian came out to replace our air conditioning and much more with re routing the air flow in order to make it more efficient. Both Anthony and Sebastian were genuinely concerned about the air quality in my home being upgraded for a more healthy environment. Also Ken was extremely helpful advising me from the office with questions I had. The entire team was so professional. I would not use any other service than Williams.

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6375 Burnt Poplar Rd
Greensboro, NC 27409
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