Duct Sealing

Sealing air ducts energy efficiency upgrade

Duct Sealing

Sealing air ducts can greatly reduce energy loss in your home.

Most old – and many new – homes have leaky ductwork, which causes poor airflow. This results in stuffy, uncomfortable rooms and can even expose people and pets to health hazards.

Beyond home comfort and health issues, porous ductwork can also cause your heater and air conditioner to age prematurely because they must turn on and off more frequently due to irregular and unnecessary airflow.

Powersmith home energy audit will determine whether and where your air ducts need sealing. If they do, a highly trained and certified Powersmith technician will work as quietly and efficiently as possible to:

  • Reseal your home’s ducts with metal tape or spray-on sealant.
  • Balance its duct system to optimize airflow.

We also recommend a thorough duct cleaning before sealing, and insulating the ductwork in your attic, crawlspace and basement to further increase your indoor comfort.

Also read how we seal cracks and holes throughout your home as part of our home-weatherization service.

Please note that Powersmith believes strongly in Property Performance Improvement (PPI) and so ONLY provides duct cleaning and sealing services as part of a complete home energy audit package. Our goal is to provide you with a more comfortable, healthier home while significantly decreasing your energy bills. A full-service energy audit/retrofit is the only way we can achieve this goal.

FREE retest following our retrofit.

Once our certified technicians retrofit your air ducts with sealants and balancing, we will retest your home free of charge.

You will see for yourself how much more comfortable each room is, and how less-frequently your heating and cooling equipment turns off and on.

And you will enjoy a lower monthly energy bill for many years to come!

Start saving by scheduling your Home Energy Audit today! Give us a call at  (631) 647-4701

Client Testimonials


They know their job, they did a terrific job... I am very satifisfied with the conversion and the insulation. It's a pleasure to come home now! 

David & Betty Skinner, Hempstead, NY


We no longer walk on cold floors — it's such a pleasure to know that the house is insulated now and so quiet... They were prompt and made sure I was a happy customer before they left the home. They left it spotless! 

Margo and Eric Shuff, Amityville, NY