Duct Leakage Test in Moorestown, NJ

Improve HVAC performance and ensure energy code compliance with dependable duct leakage test in Moorestown, NJ. Our certified technicians find and measure ductwork air leaks, allowing homeowners and builders to improve indoor comfort, reduce energy waste, and satisfy state standards.

Why Duct Leakage Test is Important In Moorestown, NJ

Across the country, states and municipalities enforce the 2015 IECC, International Energy Conservation Code for single-family buildings and the 2018 International Energy Conservation Code for multi-family buildings. 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 duct leakage is one of the top reasons for air loss in homes in Pennsylvania, New Jersey, and Delaware? Leaked air can drive up your utility costs, tax your HVAC equipment, and circulate insulation debris and dust throughout your home. 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 initiate a duct leakage test in Moorestown, NJ, your technician seals all supply and return registers, leaving only the main return or air handler open. A specially calibrated duct blaster fan is then secured to the opening. Its job is to depressurize the duct system, allowing air leaks to reveal themselves clearly.

The duct blaster teams up with a precision pressure sensor to measure airflow accurately and locate duct leaks without affecting your home. A duct leakage test — widely known as a duct blaster test — pinpoints air leakage in your ducts so you can choose the best sealing methods.

duct leakage test is hassle-free, clean, and won’t interfere with residents’ daily routines. Most tests in Moorestown, NJ require only 30 to 60 minutes, yet the upgrades can improve your home’s comfort and efficiency well into the future.

How to Measure Duct Leakage

Duct leakage is measured in cubic feet per minute (CFM) per 100 square feet of conditioned space. Your technician uses a nanometer to detect small pressure differences, which indicate how much air is leaking through the ducts. Understanding this number lets you identify inefficiencies, weigh improvement options, and confirm your home’s compliance with local energy code requirements in Moorestown, NJ.

Cost of Excessive Duct Leakage

If you observe rising utility costs, temperature swings in different rooms, or regular HVAC breakdowns, duct leakage may be involved. According to ENERGY STAR, a large portion of homes lose between 20% and 30% of conditioned air due to leaky ducts. 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 produces more frequent issues that require costly repairs. Proper duct sealing helps support your HVAC system’s long-term operation, increasing its lifespan and lowering frequent maintenance needs.

Duct leaks can also introduce dust, mold spores, excess humidity, and other contaminants into the duct system. This can worsen allergy flare-ups, reduce indoor air quality, and cause long-term structural deterioration behind walls or ceilings.

How to Properly Seal Ductwork in an Old Home

The 2015 IRC/IECC outlines that new homes must be built with fully sealed duct systems, utilizing materials like mastic, foil tape, and insulation to enhance energy efficiency. But what about leaks that are hidden far behind walls or ceilings?

Aerosol sealing technology (AeroSeal) is one way to reach hidden openings inside ductwork. To complete this method, all vents are closed off except for one access opening. The HVAC system is isolated, and a machine is linked to the duct system. It pressurizes the ducts and applies a fine aerosol sealant that fills tiny openings where standard sealing cannot reach.

This method is great for handling small to medium leaks. However, larger holes often require manual sealing with mastic and tape. Technicians perform pre- and post-aerosol sealing duct leakage tests to measure the improvement and confirm treatment effectiveness.

Common Areas of Duct Leakage

The most typical place for ducts to lose air is at the joints. Ductwork consists of different metal sections pressed together with tight fittings and metal bands, yet these joints are not usually airtight.

As your HVAC system delivers heat and cooling across different seasons, the ducts constantly expand and contract. Over time, this movement weakens the joints, creating gaps and leaks — a key reason duct leakage test is recommended for new and older homes in Moorestown, NJ.

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 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 must remain below 4 CFM per 100 square feet with the air handler installed, or 3 CFM per 100 square feet if the air handler is missing. For new construction, passing a duct leakage test is required before a home can receive an occupancy certificate.

If your home in Moorestown, NJ doesn’t achieve a passing duct leakage score, you’re likely overspending on heating and cooling — and putting extended strain on your HVAC unit. Meeting the 3–4 CFM requirement is crucial not only for passing code but also for maintaining your home’s overall energy efficiency and comfort.

Your technician will also share expert solutions for tackling leakage problems so you can pass the test, cut down utility expenses, and improve overall comfort and efficiency.

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

Local Energy Audits is proud to work with customers in Moorestown, NJ and all nearby areas. We specialize in detecting duct leakage and energy inefficiencies using blower door and duct leakage test. Whether you’re building new or enhancing your current home, we’re here to support you.
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 duct mask tape being placed on all ducts and registers on both the supply and return sides.

After the registers are sealed, we hook the duct tester to the HVAC unit or a main return.

The ducts are then depressurized to 25 Pascals. With this pressure applied, we use the nanometer to measure how much leakage is present.

Schedule Your Duct Leakage Test in Moorestown, NJ

Ensure your HVAC system achieves strong efficiency, full compliance, and dependable operation with precise duct leakage test in Moorestown, NJ. Whether you’re a homeowner boosting comfort or a contractor finalizing an inspection, our certified team delivers fast, accurate, and affordable testing.

We use industry-standard duct blaster equipment and supply on-site support to help you pass your test, curb energy waste, and maintain your HVAC system’s long-term performance.

📞 Call 888-213-3975 ✉️ Request a Quote

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