If you have never heard of duct pressure testing, you’re not alone. Many homeowners are unaware of this practice and the important role it serves in keeping your air ducts functional. This is a diagnostic procedure to measure the air tightness of the air ducts in your home. It can be done in a home that is already inhabited, as well as in a newly built structure. If you are unsure as to whether the ducts in your home should be pressure tested, consult TI Dawson Heating & AC. We provide duct pressure testing to residents in the Martinsburg, WV area.

Why Duct Pressure Testing Is Necessary

Should you have pressure testing done on your ductwork? Only an expert should help you make that decision. If you suspect that your ducts are leaking, then testing them is generally a good idea. Duct leaks in your home can make it unhealthy and uncomfortable. If the return ducts are leaky, they can draw pollutants into the home from a variety of places, such as your basement, attic, garage, or crawl space.

If the supply ducts were not installed properly, they could cause back-drafting in fireplaces and wood stoves. Back-drafting is dangerous, and it can also occur in water heaters and naturally vented oil and gas furnaces. Leaking ducts may also create pressure issues that cause moisture problems and drafts.

In addition to causing potentially dangerous problems, an improperly installed duct system can cost you money. It will limit how efficiently a heat pump, air conditioning system, or forced-air furnace operates by a significant percentage.

Can Duct Testing and Sealing Make Your Home Healthier?

Duct testing and sealing can decrease air pollutants indoors in a few ways. Pressure testing duct systems for proper pressure balance may reveal indoor air pressures that result in an entire house leaking. Air is brought in from places throughout the home, and back-drafting becomes an issue. Unless you have your ducts pressure tested, such issues will not be detected as soon as they could be, if they are detected at all.

When leaks are detected, they can be sealed. Sealing the leaks in your system’s return ducts will stop pollutants from entering the home from different locations. What kinds of pollutants might enter your home through leaky ducts? From the attic, you might be exposed to dust and insulation fibers. The crawl space could expose your household to dust, pesticides, mildew, mold, moisture, insulation fibers, and even radon gas. The basement could contain carbon monoxide, mold, mildew, dust, and fumes from chemicals – and all of these things might make their way into your home through leaky ducts. You could also inhale chemical fumes, carbon monoxide, car exhaust, and dust from the garage.

Duct Pressure Testing for New Construction

If your home is currently under construction or you seek an upgrade, pressure testing can also be useful. This kind of testing can help to verify how well an installed system actually performs. If changes ultimately need to be made, it is far better and more cost-effective to catch problems early. Airflow performance can be assessed by implementing this kind of testing. Without verifying the airflow throughout an entire system, the heating and refrigeration performance cannot be accurately evaluated.


If you live in Martinsburg, Hedgesville, Berkeley Springs, or the surrounding areas in West Virginia, contact TI Dawson Heating & AC about duct pressure testing. We are equipped to perform this type of testing, so you can be sure your system is working properly. Whether you want pressure testing in a home that is old or new, we can help. If your ducts need to be sealed, we can do that, too.