Duct Leakage Test in Cape May city, NJ

Improve HVAC performance and ensure energy code compliance with dependable duct leakage test in Cape May city, 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 Cape May city, NJ

States and municipalities commonly implement the 2015 IECC, International Energy Conservation Code for single-family dwellings and the 2018 International Energy Conservation Code for multi-family residences. The change will create considerable implications for home builders and HVAC contractors carrying out projects in the state. A Duct Leakage Test and the mandated Blower Door Test apply to all new or renovated homes under the 2015 regulations. Did you know that leaking ducts are a widespread cause of air loss in homes across Pennsylvania, New Jersey, and Delaware? Leaked air can lead to rising energy bills, added strain on your HVAC system, and unwanted insulation and dust spreading through your home. This makes duct leakage test a crucial step for maintaining comfort in new and old homes alike. Continue reading to learn why duct leakage test is valuable and how it benefits you.

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How a Duct Leakage Test Is Conducted

To conduct a proper duct leakage test in Cape May city, NJ, your technician first seals all supply and return registers except the main return or air handler. A calibrated duct blaster is then mounted to the opening. By depressurizing the duct system, it creates ideal conditions for detecting air leaks.

The duct blaster joins forces with a precision pressure sensor to monitor airflow and pinpoint leak points in the ducts without disturbing your home. A duct leakage test — sometimes known as a duct blaster test — shows exactly where your ducts are leaking air so you can apply the right sealing fixes.

duct leakage test is swift, clean, and carried out with no disturbance to residents. Most tests in Cape May city, NJ are performed within 30 to 60 minutes, and the positive impact on comfort and efficiency can remain 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 detect minimal pressure variations, revealing the amount of air leakage occurring in the duct system. Understanding this number helps you recognize where issues exist, plan meaningful improvements, and check your home against local energy code requirements in Cape May city, 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, the typical home loses between 20% and 30% of its conditioned air due to duct leaks. Outside hot or cold air leaking into your system puts extra strain on your HVAC unit, raising energy bills and decreasing comfort.

Overworked equipment also puts extra stress on the system, resulting in breakdowns and increased repair costs. Proper duct sealing helps sustain your HVAC system’s long-term condition, increasing its operational lifespan and decreasing maintenance requirements.

Duct leaks can also let in dust, mold spores, added moisture, and other harmful contaminants. This can heighten allergy issues, compromise indoor air quality, and slowly cause expensive structural damage behind walls or ceilings.

How to Properly Seal Ductwork in an Old Home

The 2015 IRC/IECC calls for new homes to include duct systems that are completely sealed using efficient materials such as mastic, foil tape, and insulation. But what happens when air leaks are concealed deep in the walls or ceilings?

Aerosol sealing technology (AeroSeal) is one way to reach hidden openings inside ductwork. 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 applies a fine aerosol sealant that fills tiny openings where standard sealing cannot reach.

This method is very effective for minor to moderate leaks. However, substantial openings may still need traditional sealing with mastic and tape. Technicians complete before-and-after duct leakage tests to measure leakage reduction and ensure the aerosol sealing was effective.

Common Areas of Duct Leakage

The most common leakage area in duct systems is the joints. Ductwork involves numerous metal parts pressed together with tight fittings and metal bands, but these connections are almost never fully airtight.

As your HVAC system shifts between hot and cold cycles all year long, the ductwork expands and 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 Cape May city, NJ, whether new or old.

Many energy auditors assess duct leakage by touching the ductwork and using a small tool to check the width of gaps where joints connect. If your duct system does not include sealing with mastic and approved tape, leakage is highly likely.

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, a duct leakage test must be successfully passed before the home can obtain an occupancy certificate.

If your home in Cape May city, 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 fundamental not only for code adherence but for boosting your home’s long-term efficiency and comfort.

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 Cape May city, NJ

Local Energy Audits proudly covers Cape May city, 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 set up the duct tester by attaching it to the 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 Cape May city, NJ

Ensure your HVAC system maintains top efficiency, remains compliant, and delivers strong performance with dependable duct leakage test in Cape May city, NJ. Whether you’re a homeowner improving comfort or a contractor completing a final inspection, our certified team provides 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 Cape May city, NJ with dependable and energy-efficient testing solutions.