Duct Leakage Test in Wenonah, NJ

Guarantee your HVAC system runs efficiently and adheres to local requirements with quality duct leakage test in Wenonah, NJ. Our certified technicians analyze and measure duct leaks to assist homeowners and builders in improving comfort, reducing energy waste, and fulfilling state requirements.

Why Duct Leakage Test is Important In Wenonah, NJ

States and municipalities now follow the 2015 IECC, International Energy Conservation Code for single-family residences, as well as the 2018 International Energy Conservation Code for multi-family structures. The change will present notable implications for home builders and HVAC contractors active throughout the state. A Duct Leakage Test along with a Blower Door Test is now required for any newly constructed or remodeled home as outlined in the 2015 regulations. Did you know that duct systems can be major sources of air leakage in homes across Pennsylvania, New Jersey, and Delaware? Leaked air can result in higher utility costs, extra load on your HVAC system, and dust and insulation traveling throughout your home. This makes duct leakage test necessary for homes of any age. Keep reading to discover why duct leakage test is so important and the advantages it offers.

888 213-3975

What Our Clients Say

How a Duct Leakage Test Is Conducted

To start conducting a duct leakage test in Wenonah, NJ, the technician seals all supply and return registers other than the main return or the air handler. A specially calibrated fan called a duct blaster is then connected to the opening. This fan depressurizes the duct system, making it easier to pinpoint exactly where air is leaking.

The duct blaster, working hand in hand with a precision pressure sensor, measures airflow and identifies leaks in the ductwork without impacting your home. A duct leakage test — often described as a duct blaster test — identifies leaking areas in your ducts so you can determine the most efficient sealing fix.

duct leakage test is quick, clean, and non-intrusive for residents. Most tests in Wenonah, NJ take around 30 to 60 minutes, but the efficiency and comfort improvements can last for many years.

How to Measure Duct Leakage

Duct leakage is quantified in cubic feet per minute (CFM) for each 100 square feet of conditioned living space. Your technician uses a nanometer to identify pressure differences, which provide a clear picture of how much air is leaking from the ductwork. Understanding this number allows you to pinpoint problem areas, assess needed improvements, and confirm whether your home satisfies local energy code requirements in Wenonah, NJ.

Cost of Excessive Duct Leakage

If you’re experiencing spikes in utility bills, uncomfortable temperature variations, or ongoing HVAC repair needs, duct leakage may be to blame. According to ENERGY STAR, homes across the country lose 20% to 30% of their conditioned air through duct leakage. Air entering from outside—whether warm or cold—makes your HVAC operate harder, causing energy costs to climb and comfort to decrease.

Overworked equipment also leads to more breakdowns and costly repairs. Proper duct sealing helps preserve the long-term efficiency of your HVAC system, boosting its lifespan and cutting down on regular maintenance needs.

Duct leaks can also let in dust, mold spores, added moisture, and other harmful contaminants. This can worsen allergies, reduce indoor air quality, and even cause expensive structural damage behind walls or ceilings over time.

How to Properly Seal Ductwork in an Old Home

The 2015 IRC/IECC mandates that new homes include fully sealed duct systems built with energy-efficient materials like mastic, foil tape, and proper insulation. But what do you do about leaks that sit deep within walls or ceilings?

Aerosol sealing technology (AeroSeal) reaches interior duct leaks that traditional sealing methods can’t access. To implement this method, every vent is covered except one access point. The HVAC system is isolated, and a machine is connected to the duct system. It pressurizes the ducts and emits a fine aerosolized sealant designed to fill small leaks unreachable with standard sealing.

This method is highly effective for small to medium leaks. However, large openings may still require manual sealing with mastic and tape. Technicians use before-and-after duct leakage tests to measure improvement and make sure the aerosol sealing process was successful.

Common Areas of Duct Leakage

The most typical location for air to escape from ducts is at the joints. Duct systems are built from multiple metal pieces pressed together with tight fittings and metal bands, but these joints are seldom completely airtight.

As your HVAC system moves through annual heating and cooling cycles, the ductwork expands and then contracts. Over time, this movement causes joints to lose their seal, creating gaps and leaks — making a duct leakage test valuable for any home in Wenonah, NJ, whether new or old.

Many energy auditors detect leaks by checking the duct surfaces by hand and using a small tool to measure joint gap width. If your duct system was not sealed with mastic and approved tape, there’s a high likelihood that air is leaking.

What Is an Acceptable Amount of Duct Leakage per Energy Code?

To achieve a passing duct leakage result, your system has to measure below 4 CFM per 100 square feet with the air handler installed, or 3 CFM per 100 square feet without the air handler. For new construction, a passing duct leakage test is essential before the home can qualify for an occupancy certificate.

If your home in Wenonah, NJ fails its duct leakage test, you are likely facing inflated heating and cooling costs — along with increased strain on your HVAC system. Meeting the 3–4 CFM requirement is important not just for compliance, but for safeguarding your home’s comfort and long-term energy efficiency.

Your technician will also give expert suggestions on correcting leakage issues, allowing you to pass the test, lower utility expenses, and improve your home’s overall efficiency.

Local Energy Audits — affordable duct leakage test in Wenonah, NJ

Local Energy Audits proudly serves homeowners, contractors, and builders throughout Wenonah, NJ and nearby regions. We specialize in revealing duct leakage and energy inefficiencies through blower door and duct leakage test. Whether your project is new or existing, we’re here to assist.
If you’d like to schedule a test, call us during business hours or contact us online to request an appointment.

The Duct Leakage Test Steps Explained

A duct leakage test begins with sealing each duct and register using duct mask tape on the supply and return sides.

After the registers are sealed, we position the duct tester on the HVAC unit or on a primary return.

The ducts are then pulled down to 25 Pascals of depressurization. With the ducts in this state, we take a leakage reading using the nanometer.

Schedule Your Duct Leakage Test in Wenonah, NJ

Ensure your HVAC system delivers maximum efficiency, full compliance, and top performance through professional duct leakage test in Wenonah, NJ. Whether you’re a homeowner focused on comfort or a contractor closing out an inspection, our certified team provides fast, accurate, and affordable testing.

We use industry-standard duct blaster equipment and offer direct on-site guidance to help you pass your test, lower energy waste, and protect your HVAC system’s long-term health.

📞 Call 888-213-3975 ✉️ Request a Quote

Serving homeowners, builders, and contractors across Wenonah, NJ with dependable and energy-efficient testing solutions.