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 Air Duct Sealing 

High utility bills? Stuffy rooms? Dusty house? It could be your duct system. In houses with forced-air heating and cooling systems, ducts are used to distribute conditioned air throughout the house. Have you ever wondered if your duct work is properly sealed? Sealing duct work is vital to a home's efficiency, comfort, and indoor air quality. At Thermo Shield Home Energy Savings we have the certifications, tools, and experience to test and repair your home's air ducts system. Our team has the training, skills, and experience to seal and make repairs to your air ducts system.

A duct system that is properly sealed and insulated can make your home more comfortable, energy efficient, and safe—all while helping to reduce your energy bills. However, in typical homes, about 20 to 30 percent of the air that moves through the duct system is lost due to leaks, holes, and poorly insulated ducts. The result is higher utility bills and difficulty keeping the house comfortable, no matter how the thermostat is set.


Have you ever wondered where all the dust in your home is coming from? The majority of attics are full of dust, debris, and dangerous fibrous materials. Leaky duct work is one of the leading causes of dust and poor air quality in homes. Long exposure to poor air quality can cause allergies and may cause health problems down the road. Sealing duct work will decrease dust in your home and improve your indoor air quality.


We highly recommend a duct cleaning service after a duct sealing service. It is also highly recommended to air seal your attic before adding Cellulose or Fiberglass insulation. This will ensure your home's energy efficiency and indoor air quality are optimal.

Why Our Duct Sealing Services Is Different

SRP preferred contractor


Energy Star Century Club Award 

winning star

Before/After Duct Pressure Testing

duct sealing heating check

BPI Certified 

quality ok



Our Duct Sealing Services Proven Process

  • Attic Inspection or Energy Audit

  • Identify problem areas 

  • Air Sealing and Can light covers

  • Duct work, sealing and encapsulation

  • Increasing Cellulose, Fiberglass  or adding Spray foam insulation. 

  • Increase R-value to R38-R49.

duct sealing services | duct repair

6 Benefits of Duct Sealing Services

  1. Eliminate musty smelling attic air

  2. Improve Indoor air quality

  3. Increase HVAC unit life 

  4. Save on energy bill

  5. Reduce allergy problems 

  6. Reduce dust 

Benefits of Properly Sealing and Insulating your Duct System
  • Indoor air quality

  • Comfort & Safety 

  • Wasted energy 

  • Save money on energy bills

  • Improved HVAC system efficiency 

  • Reduce dust in the home

  • Peace of mind 

Air Duct Sealing Problems and Solutions

Duct Sealing
Problems and Solutions


  • Leaky, torn, and disconnected ducts

  • Poorly sealed registers and grills

  • Leaks at furnace and filter slot

  • Kinks in flexible ductwork restricting airflow 


  • Properly sealed ducts

  • Registers and grills tightly sealed to ducts

  • Sealed furnace and filter slot

  • Well-insulated ducts in unfinished areas

  • Straightened flexible ducts with improved airflow

Duct Sealing Services in Tempe, AZ

Contact Thermo Shield LLC if you need air sealing, duct sealing, spray foam, blown cellulose, or any other insulation solution. Contact us today to schedule a free estimate with your trusted local attic insulation company!

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