Seal your ducts.
Seal your savings.
Most homes lose 20–30% of their heated or cooled air through leaky ducts. That’s hundreds of dollars lost every year, literally leaking away through cracks and gaps.
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Benefits you'll feel right away
Even Temperatures
No more hot or cold rooms. Sealed ducts ensure even airflow throughout your home.
Lower Energy Bills
Prevent air loss, reduce energy waste, and lower your utility bills.
Cleaner, Healthier Air
Sealed ducts help keep dust, allergens, and pollutants out of your living space.
Built to Last
Reducing duct leaks helps ease the workload on your HVAC system over time.
About Our Duct Sealing Services
COIT’s duct sealing service, utilizing professional-grade Aeroseal technology, can help finally stop leaks, reducing air loss by up to 90% and enabling your system to run more efficiently than ever.
We’ll perform an initial examination of your ducts to determine where the leaks are and begin sealing (so you can start saving).
Aeroseal Before Seal
Aeroseal After Seal

Hear From Our Customers
Today I had COIT out to evaluate my air duct system with a new service they offer called Aeroseal. My home was built in 1986, and I wanted to see if I could perhaps improve the efficiency of our home, especially with the latest SRP rate increase. COIT confirmed the appointment the night before, and the crew arrived right on time this morning. [The technicians] did a great job explaining the testing process, and once the system was set up and connected to the computer program, we found our system was leaking 5.5% into our attic. After the Aeroseal process, they got that number down to 0.6%! An 88.7% improvement. I’m so happy I had this done, and I’m quite certain it will help mitigate any cooling loss in the summer. The crew was an absolute pleasure to work with and super professional. Even my crazy dog liked them!
— James P. (Yelp)