Duct Leakage Test in Evesham, NJ

Enhance your HVAC system’s efficiency and satisfy energy regulations through precise duct leakage test in Evesham, NJ. Our certified technicians assess and measure air leaks in ducts to help homeowners and builders increase comfort, reduce energy inefficiencies, and ensure state compliance.

Why Duct Leakage Test is Important In Evesham, 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 result in several substantial implications for home builders and HVAC contractors engaged in work across the state. A Duct Leakage Test alongside a Blower Door Test must now be completed in newly constructed or remodeled homes to meet the 2015 regulatory standards. Did you know that ducts are responsible for a large share of air leakage issues in homes in Pennsylvania, New Jersey, and Delaware? Leaked air can escalate your energy costs, force your HVAC system to work harder, and move insulation and dust throughout your house. This makes duct leakage test vital for homes both old and newly built. Keep reading to find out why duct leakage test matters and what benefits it provides.

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How a Duct Leakage Test Is Conducted

To commence a duct leakage test in Evesham, NJ, your technician will seal every supply and return register except the primary return or air handler. A duct blaster fan, carefully calibrated for accuracy, is then attached to the duct opening. It depressurizes the ductwork, allowing leaks to become more noticeable.

The duct blaster, aided by a precision pressure sensor, accurately measures airflow and reveals duct leaks without interrupting activities in your home. A duct leakage test — sometimes labeled as a duct blaster test — finds where your ducts are leaking air so you can decide on the best sealing strategy.

duct leakage test is rapid, clean, and performed without inconvenience to residents. Most tests in Evesham, NJ finish within 30 to 60 minutes, and the benefits to your home’s comfort and efficiency can last for years.

How to Measure Duct Leakage

Duct leakage is determined in cubic feet per minute (CFM) for every 100 square feet of conditioned interior space. Your technician uses a nanometer to sense slight pressure changes, showing precisely how much air is escaping through the ductwork. Understanding this number helps you uncover weak points, analyze opportunities for upgrades, and check whether your home follows local energy code requirements in Evesham, NJ.

Cost of Excessive Duct Leakage

If you’re seeing higher energy bills, irregular heating or cooling, or frequent HVAC malfunctions, duct leakage may be at fault. According to ENERGY STAR, many homes lose as much as 20% to 30% of conditioned air through duct leaks. Air from outside—whether hot or cold—entering your system forces your HVAC to work harder, increasing utility bills and reducing indoor comfort.

Overworked equipment also leads to recurring breakdowns and higher repair expenses. Proper duct sealing helps improve the long-term health of your HVAC system, boosting longevity and reducing ongoing maintenance requirements.

Duct leaks can also allow dust, mold spores, moisture buildup, and multiple contaminants to enter the duct system. This can make allergies more severe, reduce the quality of indoor air, and produce costly structural harm behind walls or ceilings as time progresses.

How to Properly Seal Ductwork in an Old Home

The 2015 IRC/IECC requires all newly constructed homes to have fully sealed ductwork with modern, energy-saving materials such as mastic, foil tape, and insulation. But what if leaks are concealed deep inside the structure of your walls or ceilings?

Aerosol sealing technology (AeroSeal) is one way to reach hidden openings inside ductwork. To initiate this method, technicians seal every vent except one access point. The HVAC system is isolated, and a machine is connected to the ductwork. It pressurizes the ducts and sprays a fine mist of sealant that fills tiny leaks and holes beyond the reach of conventional sealing.

This method is ideal for small to medium leaks. However, any large openings will still need manual sealing with mastic and tape. Technicians test the ducts for leakage before and after aerosol sealing to determine the reduction level and verify success.

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 transitions between warm and cool air throughout the year, the ducts expand and contract. Over time, this movement loosens the joints, causing gaps and leaks — which is why both new and older homes in Evesham, NJ should consider a duct leakage test.

Many energy auditors test for duct leakage by feeling along the ducts and using a small tool to gauge how wide the gaps are at the joints. If your duct system has not received sealing with mastic and approved tape, leakage is very probable.

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

To achieve a passing duct leakage result, your system should fall under 4 CFM per 100 square feet with the air handler, or 3 CFM per 100 square feet when the air handler is absent. For new construction, an occupancy certificate cannot be issued unless the home passes a duct leakage test.

If your home in Evesham, NJ does not meet duct leakage standards, you are likely overpaying for heating and cooling — and adding unnecessary strain to your HVAC equipment. Meeting the 3–4 CFM requirement is essential not only for following building code, but for keeping your home comfortable and energy-efficient.

Your technician will also offer specialized recommendations to repair leakage issues so you can meet passing requirements, reduce utility bills, and improve your home’s performance.

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

Local Energy Audits proudly covers Evesham, NJ and all nearby towns. We specialize in measuring duct leakage and energy inefficiencies using advanced blower door and duct leakage tests. Whether you’re building new or improving old, we’re here to help.
If you’d like to book 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 attach the duct tester directly to the unit or to one primary return.

The ducts are then reduced to a depressurized state of 25 Pascals. With them depressurized, the nanometer gives us the duct leakage reading.

Schedule Your Duct Leakage Test in Evesham, NJ

Ensure your HVAC system remains energy-efficient, code-approved, and performing at its highest capacity with professional duct leakage test in Evesham, NJ. Whether you’re a homeowner enhancing energy comfort or a contractor wrapping up the inspection process, our certified team offers fast, accurate, and affordable testing.

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

📞 Call 888-213-3975 ✉️ Request a Quote

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