Duct Sealing

Understanding the Problem

Think of your respiratory system as ductwork. But instead of pushing air through the lungs that distribute oxygen molecules to the rest of the body, the duct system's role is to take the conditioned air and push it throughout the rest of the house, heating or cooling the rooms to the desired temperature. If the conditioned air fails to reach the rooms because of leaks, efficiency goes down and costs go up.

Even in new homes today, the duct system can leak as much as 15% to 25%. That means for every dollar of air you're putting through your duct system, you're losing $.15 to $.25 cents. These figures are for newly constructed homes, as compared to existing homes which are much less efficient.

Here are some fairly common warning signs that indicate leaky ductwork:
  • Unusually high summer and/or winter utility bills
  • Rooms that are difficult to heat and cool
  • Stuffy rooms where airflow is negligible
  • Ductwork that is located in an attic, a crawlspace, or in the garage
Understanding the Solution

Loose ductwork means air is escaping your duct system and not reaching the desired rooms where it belongs. Apex Energy Solutions can measure the amount of leakage in your system and perform the necessary modifications needed to bring it up to a more efficient standard.

A certified PTCS (Performance Tested Comfort Systems) technician will come and test your ducts to determine the level of leakiness. Through the use of a mechanical test called a "Duct Blast", we will gauge the airflow going into the system and the amount of air escaping it. This air loss number will be logged. The technician then seals all the joints with mastic (a low-VOC water-based, flexible, and permanent caulk), and reassembles ductwork if necessary. The test will then be repeated a second time to determine the actual amount of air loss savings as compared to the original test.

Duct Sealing PDF download


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