Book Online
Call Us
Relaxed Family

Air Duct Sealing and Repair

Ductwork Sealing and Repair Services in Sterling

Our team responds quickly with a satisfaction guarantee
The ductwork in your home is an intricate system that includes supply ducts, which deliver conditioned air to different rooms, and return ducts, which transport air back to the HVAC system. Leaky ducts may lose so much air that air conditioner efficiency can be reduced by as much as 40%. Old ducts are most at risk, especially those in your attic or basement.
Cardinal Plumbing provides air duct sealing services in Northern Virginia to restore your ventilation system and A/C system efficiency. We serve customers in Sterling, Alexandria, Woodbridge, Lorton, Reston, Gainesville, Manassas, and other communities.
technician sealing vent pipe
Features of Our Service
Check Mark
Same day service calls
Check Mark
Fast drain cleaning
Check Mark
Free estimates
Check Mark
Expert plumbers
Check Mark
Satisfaction guarantee
Check Mark
Affordable pricing
Benefits of Our Service
Check Mark
Fast response: less downtime
Check Mark
Experience solving difficult clogs
Check Mark
Locally owned and operated
Check Mark
Community driven
Check Mark
5,000+ 5-star reviews
Check Mark
Honest and dependable technicians

Common Problems with Air Ducts

The most common issues we see with duct systems include:

  • square box Leaky Ducts: It’s not uncommon for small cracks to develop in air ducts. These breaks can cause air to leak and draw in stale attic or crawlspace air, circulating it into the living space. A simple repair can resolve a musty smell or potential air quality issues.
  • square box Uninsulated or Poorly Insulated Ducts: With no/poor duct insulation, air can lose heat quickly as it passes through cold attic duct lines. Uninsulated ductwork can also quickly heat chilled air before it ever reaches your living space.
  • square box Imbalanced Ductwork: Poorly installed, improperly located, or misshapen ducts can affect air distribution. The result can be low temperature regulation, in which some rooms are too hot and others are too cold.
  • square box Safety: Air duct leakage can cause a pressure imbalance, which can push air from furnaces, gas ranges, wood stoves, and other combustion appliances back into your home. This can result in carbon monoxide exposure and general poor indoor air quality.

When Is It Time to Install New Air Ducts?

In terms of HVAC efficiency, sealing and repairing air ducts can improve performance. However, if your ductwork is more than 15 years old, replacing it can avoid issues such as pest infestations or collapsed ducts. If you have high energy bills and can’t explain why, leaks in ductwork may be causing you to lose energy. Small gaps or holes that allow air to leak can also let in dust, pollen, and other contaminants, which can trigger allergies, asthma, or other health problems. If you notice any of these signs, it may be time to install new air ducts.

Contact Cardinal Plumbing Today

An experienced professional can inspect your ductwork and provide air duct sealing and repair services whenever possible. At Cardinal Plumbing, our technicians fix air ducts for homeowners throughout Northern Virginia. We offer same day service and unbeatable financing. If you are experiencing signs of air duct leakage, book your appointment online or call us today at 703-721-8888.

Air Duct Repair Services

A healthy HVAC unit includes having clean, properly functioning air ducts. If you have noticed a change in air quality or the efficiency of your HVAC unit, then your air ducts might be to blame.
While having clean air ducts can fix many air quality issues in your home, sometimes a damaged air duct is to blame for causing air flow problems.
Knowing how to identify issues and repair an air duct should be done by a professional. DIY work often leads to further problems down the road, and can result in a damaged HVAC unit that needs repairs or even replacement.
Cardinal Plumbing, Heating & Air is here to help you find the right solution for your air ducts. Our team of HVAC technicians offers air duct repair and sealing services.
With a money-back, satisfaction guarantee, we will provide you with services that exceed your expectations every time.
Our Nest Protection Plan offers valuable maintenance services that can help detect the need for replacements or repairs as they come along.
Benefits of Air Duct Repair
As air ducts age, they become more likely to require repairs. Poor air quality in air ducts can be a result of clogs or debris buildup.
Aside from cleaning air ducts frequently, it’s important to have them inspected for air leaks. Leaky ducts allow heated or cooled air to escape into unused spaces, and they have more entry points for dust and dirt. This can lead to faster and more frequent clogs.
Another issue of leaky ducts is poor airflow. Poor airflow in your HVAC unit can cause your unit to work harder than usual, resulting in premature HVAC repairs and replacements.
These issues can be avoided with outstanding air duct repair services from Cardinal Plumbing, Heating & Air.
Servicing and repairing air ducts is one of our specialties. We pride ourselves on exceeding our customers’ expectations with every job. When you choose Cardinal for your air duct needs, you’re investing in better air quality for your family, improved airflow for your HVAC unit and fewer emergency repairs.
Repairs vs Replacements
Knowing the difference between when to repair an air duct vs. when to replace one can save you time and money.
Cardinal expert HVAC technicians are here to help you through the process step-by-step to ensure your exact needs are met. When choosing Cardinal for your air duct needs, you are committing to a team that dedicates themselves to diagnosing problems at the root cause to eliminate further issues.
With professionalism and transparency in mind, Cardinal technicians will perform all air duct repairs and replacements in a safe, reliable and timely manner.
Signs of when to replace your air ducts include old age, physical damage due to water, smoke, rust, mold build-up and dirty fiberboard ducts. 
Diagnosing the difference between a needed repair or replacement should be done by a professional. Cardinal Plumbing, Heating & Air is available to provide professional air duct services across Northern Virginia.
What to Expect from Cardinal HVAC Experts
To guarantee our customers’ needs are met, we offer a wide range of air duct services, including repairs, replacement, sealing and cleaning.
When you choose Cardinal Heating and Air, our team will show up uniformed and ready to provide contactless service to ensure customer safety.
With ongoing training, our experts remain up-to-date with all new trends and technologies regarding plumbing and HVAC services. We pride ourselves on providing our community with safe, reliable and timely services.
Once a team member arrives, a quick survey to diagnose the issue will be conducted. Upon service approval, the technician will work safely and promptly to address the issue.
Whether you are in need of a simple cleaning, repair or complete replacement, the team at Cardinal will service your needs with professionalism and care. All of our work is money-back guaranteed because we are confident in our ability to provide excellent customer service and outstanding repairs.
When choosing Cardinal as a partner, you are choosing more than quality service, you are investing in a relationship that will improve your community through providing safe and reliable work.
Contact us online today or give us a call at 703-721-8888 to discuss how we can service your air ducts.

Frequently Asked Questions

People often look for DIY solutions for expensive problems. Unfortunately, duct sealing isn’t something you should attempt on your own. Although you can find mastic sealant at most hardware stores, you shouldn’t try to use the sealant to seal the ducts from inside. In the process of attempting to seal the ducts, you could cause harm to the ducts or the system in general.
So what should you do to fix your leaky ducts? The best thing you can do is call an expert for help. An experienced HVAC technician knows how to seal a duct from the inside without causing any harm. Furthermore, they look for other leaks and seal those as well. Because they have access to the right tools, a technician is able to get better results. The next time you have a leaky duct, don’t reach for the tape. Instead, reach for your phone and call us.

First, you might notice high energy bills. If you have a sudden spike in your electricity use and have no explanation for it, you should think about speaking with an HVAC technician. Air could be leaking out of your HVAC system, which makes it work even harder to keep your home comfortable.
Other signs of leaky ducts include strange noises, uneven cooling, and air escaping from your ducts. As soon as you suspect an issue, call an expert for a duct leak inspection. They know how to check for leaks and what to do to fix them. The sooner you address the issue, the less likely it is that your HVAC system will break down. Allow our team of professionals to inspect your ducts and fix any leaks within your system. If you need a duct replacement, we can handle that as well.

On your own, there is a way for you to check for leaky ducts. You can take your hand and place it up to the seams in your ductwork. If you feel air coming out, you have a leak. But this isn’t the best way to check for leaks because you could end up missing a few leaks. The only truly effective way to check for duct leaks is to call a professional.
During a duct leak inspection, a technician uses the latest technology to check for leaks. They can create a vacuum that checks the pressure within your ducts. If there’s a small leak, the professional can notice it. The right equipment turns the guesswork into a science, and this makes all the difference. The next time you think you have a duct leak, call us for help. We have years of experience checking for and fixing duct leaks.

See What Our Customers Have To Say