Duct Leakage Test in Bellmawr, NJ

Enhance your HVAC system’s efficiency and satisfy energy regulations through precise duct leakage test in Bellmawr, 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 Bellmawr, NJ

Many states and municipalities oversee single-family buildings under the 2015 IECC, International Energy Conservation Code and multi-family buildings under the 2018 International Energy Conservation Code. The change will create considerable implications for home builders and HVAC contractors carrying out projects in the state. A Duct Leakage Test in addition to a Blower Door Test is now required for new construction and remodeled homes under the 2015 rules. Did you know that ducts are a significant source of air leakage in residential properties across Pennsylvania, New Jersey, and Delaware? Leaked air can raise your energy bills, strain your HVAC system, and spread insulation and dust throughout your home. This makes duct leakage test an important requirement for homes regardless of age. Keep reading to understand why duct leakage test is necessary and how it can help you.

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How a Duct Leakage Test Is Conducted

To perform a duct leakage test in Bellmawr, NJ, the technician begins by sealing every supply and return register except for the primary return or air handler unit. A specially calibrated device known as a duct blaster is then attached to the duct opening. Its purpose is to depressurize the system so that escaping air can be detected.

The duct blaster uses a precision pressure sensor to monitor airflow and pinpoint leaks throughout the ductwork without interrupting your home environment. A duct leakage test — often referred to as a duct blaster test — identifies air loss in your ducts, allowing you to find the most effective ways to seal them.

duct leakage test is prompt, clean, and does not interrupt residents’ activities. Most tests in Bellmawr, 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 calculated in cubic feet per minute (CFM) for every 100 square feet of conditioned space. Your technician uses a nanometer to evaluate small pressure shifts that signal air escaping through the ducts. Understanding this number helps you uncover weak points, analyze opportunities for upgrades, and check whether your home follows local energy code requirements in Bellmawr, NJ.

Cost of Excessive Duct Leakage

If your utility bills keep climbing, temperatures vary from room to room, or your HVAC needs constant fixing, duct leakage may be the cause. According to ENERGY STAR, an average home’s ductwork loses 20% to 30% of conditioned air through leaks. When hot or cold outside air enters your system, your HVAC has to work harder, increasing energy costs and lowering overall comfort.

Overworked equipment also produces more frequent issues that require costly repairs. Proper duct sealing helps keep your HVAC system healthy over the long run, prolonging its lifespan and lowering continued maintenance needs.

Duct leaks can also pull dust, mold spores, excess moisture, and various contaminants into the duct system. This can worsen allergy conditions, affect indoor air quality, and result in costly damage forming behind walls or ceilings over time.

How to Properly Seal Ductwork in an Old Home

The 2015 IRC/IECC ensures that new homes are built with duct systems sealed entirely using efficient materials such as mastic, foil tape, and insulation. But what about leaks that are hidden far behind walls or ceilings?

Aerosol sealing technology (AeroSeal) can access interior duct leaks that are difficult to reach manually. To execute this method, all vents are sealed shut except a single access point. The HVAC system is isolated, and a machine is attached to the duct network. It pressurizes the ducts and injects fine aerosol particles that seal tiny gaps and holes that typical sealing techniques miss.

This method is very effective for minor to moderate leaks. However, substantial openings may still need traditional sealing with mastic and tape. Technicians complete a duct leakage test before and after aerosol sealing to track leakage reduction and confirm the treatment’s success.

Common Areas of Duct Leakage

The most frequent source of duct air leakage is the joints. Ductwork uses many metal pieces pressed together with tight fittings and metal bands, but these joining points are rarely airtight.

As your HVAC system operates in varying temperatures across the year, the ducts undergo expansion and contraction. Over time, this movement causes joints to lose their seal, creating gaps and leaks — making a duct leakage test valuable for any home in Bellmawr, NJ, whether new or old.

Many energy auditors verify duct leakage by feeling around the ducts and using a small tool to assess the opening size at the joints. If your duct system wasn’t sealed using mastic and approved tape, there is a strong chance that air leaks are occurring.

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

To achieve a passing duct leakage result, your system must show under 4 CFM per 100 square feet if the air handler is installed, or 3 CFM per 100 square feet if it is not. For new construction, a duct leakage test must be successfully passed before the home can obtain an occupancy certificate.

If your home in Bellmawr, 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 professional advice on resolving leakage issues to help you achieve a passing score, cut down utility bills, and boost your home’s performance.

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

Local Energy Audits is proud to serve customers across Bellmawr, NJ and the nearby communities. We specialize in identifying and addressing duct leakage and energy inefficiencies using blower door tests and duct leakage tests. Whether you’re constructing a new home or optimizing an existing one, we’re here to help.
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 by taping off all ducts and registers with duct mask tape on 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 the ducts at this pressure, we can use the nanometer to measure the duct leakage.

Schedule Your Duct Leakage Test in Bellmawr, NJ

Ensure your HVAC system stays energy-efficient, fully compliant, and operating at peak performance with accurate duct leakage test in Bellmawr, NJ. Whether you’re a homeowner seeking better comfort or a contractor wrapping up a final inspection, our certified team delivers fast, accurate, and affordable testing.

We use industry-standard duct blaster equipment and provide on-site assistance to help you pass your test, cut down on energy waste, and extend the long-term health of your HVAC system.

📞 Call 888-213-3975 ✉️ Request a Quote

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