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Penny Dunn

“Very pleasant experience. Shane was very nice. After I showed him what I needed, he gave me an estimated cost and after I approved the estimate, got to work. About two hours later, he was done. I was very pleased. If I hadn't known someone had been there, I would never guessed. Very neat and tidy. Highly recommended.”

Christina Yount

“I was very happy with our service technician, Tommy. He sent us an e-mail & text (w/ his photo) before he arrived. He took off his shoes and wore disposable booties on his feet and was polite & respectful. He explained what we needed, in plain English, and patiently answered our many questions. He e-mailed me an estimate within 10 minutes of leaving our condo. He even paid some attention to our Cat ! My sister & I were very impressed.”

Joan Arnold

“Jessie was the greatest! Very professional and a very caring person and he was early. Tackled a difficult job with patience and efficiency. Worked with me for the most efficient and inexpensive way to complete the job of removing a rusty hose from a laundry faucet. Washer/dryer combo was delivered over an hour late and Best Buy would not install because of the rusty hose. I was very upset. Called one plumbing company, but could only make an appoint for 2 days later. Called Cardinal Plumbing and they were able to accommodate me with and appointment the same day! Very courteous and professional and very happy with customer service and especially with one of their most valued employee: Jessie. I've read the other reviews and it appears all of their technicians are very professional, caring and efficient. Jessie turned an upsetting day into a happy day. I was able to start my laundry as soon as Jessie left. Thank you again for making my day!”

Ronnie Schulman

“I admit I had a little sticker shock when I was quoted $466 to snake a clogged kitchen drain. I did receive a $30 discount as a first time customer. That said, I was very happy with the service. They came the next day at the promised time and took the time and effort to do the job right and explain what they were doing and how to avoid future issues. They left me some solution to to pour down my drain. The plumber was professional and very courteous. I gave four stars instead of five only because I thought they were a little pricey. Nonetheless I'd use them again.”

Alison Stein

“Excellent service! I felt very well informed about all my options. The company calls, texts and emails when a service provider is on the way. I’ll absolutely recommend them and use them in the future.”

Todd Youngren

“Jessie Kidd showed up on time and was extremely professional. He fixed the issue we called about and found another problem that would have caused a huge flood in the near future. I was impressed that he took the time to inspect our plumbing system. Customer for life!!”

Joseph Charlot

“Barry did an excellent job. He came out, assessed the problem and gave me an honest quote. Barry was very patient, knowledgeable, and great to work with. I will definitely contact Cardinal in the future for any HVAC or Plumbing needs I may have.”

Valerie Frank

“I thought Zack was great. He took care to protect our flooring by wearing shoe protectors. A quarter was stuck in our Garbage Disposal and he really worked at getting it out which wasn’t easy. I really appreciate his efforts so I didn’t have to buy a new Disposal.”

Mia Spain

“Zach was very friendly and helpful. This company is very thorough for the entire process of setting up an appointment. Will definitely remain a loyal customer!”

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.

Features of Our Service

Same day service calls

Fast drain cleaning

Free estimates

Expert plumbers

Satisfaction guarantee

Affordable pricing

Benefits of Our Service

Fast response: less downtime

Experience solving difficult clogs

Locally owned and operated

Community driven

5,000+ 5-star reviews

Honest and dependable technicians

703-721-8888

Financing Options Available

Common Problems with Air Ducts

The most common issues we see with duct systems include:

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.
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.
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.
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 703-775-4733.

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