Duct Leakage Test in Rahway, NJ

Protect system efficiency and meet local building codes by choosing certified duct leakage test in Rahway, NJ. Our certified technicians inspect and measure air leakage in ductwork, enabling homeowners and builders to boost comfort, prevent energy waste, and adhere to state guidelines.

Why Duct Leakage Test is Important In Rahway, 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 impose meaningful implications on home builders and HVAC contractors working regionally within 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 ductwork often causes some of the highest levels of air leakage in homes throughout Pennsylvania, New Jersey, and Delaware? Leaked air can cause higher energy expenses, burden your HVAC system, and push dust and insulation into different areas of 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 commence a duct leakage test in Rahway, NJ, your technician will seal every supply and return register except the primary return or air handler. A duct blaster — a precision-calibrated fan — is then fitted to the duct opening. By depressurizing the system, it makes all air leaks much easier to detect.

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 — also referred to as a duct blaster test — highlights where air is leaking from your ducts to help you choose the proper sealing method.

duct leakage test is fast, tidy, and causes no disruption for residents. Most tests in Rahway, NJ are done within 30 to 60 minutes, with improvements that strengthen comfort and efficiency for years to come.

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 pick up minor pressure shifts that indicate the level of air leakage within the ducts. Understanding this number helps you locate trouble spots, review possible upgrades, and see if your home complies with local energy code requirements in Rahway, NJ.

Cost of Excessive Duct Leakage

If elevated utility bills, shifting temperatures, or repeated HVAC issues occur in your home, duct leakage may be the factor behind them. According to ENERGY STAR, a large portion of homes lose between 20% and 30% of conditioned air due to leaky ducts. Hot or cold outside air leaking in makes your HVAC system work more than it should, driving up energy costs and diminishing comfort.

Overworked equipment also brings more system failures and higher repair expenses. Proper duct sealing helps enhance the long-term resilience of your HVAC system, lengthening its lifespan and cutting overall maintenance needs.

Duct leaks can also create openings for dust, mold spores, moisture, and various contaminants to enter the duct system. This can aggravate allergies, lower indoor air quality, and eventually lead to costly structural damage hidden 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 about leaks located deep within walls or ceilings?

Aerosol sealing technology (AeroSeal) makes it possible to seal leaks found deep within the 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 applies a fine aerosol sealant that fills tiny openings where standard sealing cannot reach.

This method is extremely effective for sealing small to medium leaks. However, big gaps may still need manual sealing using mastic and tape. Technicians run a duct leakage test before and after aerosol sealing to quantify the reduction in leakage and verify the success of the process.

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 cycles through heating and cooling each year, the ducts naturally expand and contract. Over time, this movement causes the joints to loosen, opening gaps and leaks — making a duct leakage test beneficial for both new and older homes in Rahway, NJ.

Many energy auditors look for leaks by feeling the ducts and using a small tool to evaluate how wide the gaps at the joints are. 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 is required to measure under 4 CFM per 100 square feet with the air handler installed, or 3 CFM per 100 square feet when it isn’t installed. For new construction, passing a duct leakage test is required before a home can receive an occupancy certificate.

If your home in Rahway, NJ doesn’t pass its duct leakage evaluation, you’re likely paying more for temperature control — and contributing to long-term HVAC strain. 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 advise you on the best ways to address leakage issues so you can pass the test, reduce utility bills, and enhance your home’s efficiency.

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

Local Energy Audits is honored to serve customers in Rahway, NJ and all surrounding areas. We specialize in detecting duct leakage and reducing energy inefficiencies using blower door and duct leakage test. Whether you’re creating a new home or improving an existing one, we’re here to assist.
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 brought to a depressurized pressure of 25 Pascals. Once depressurized, we use the nanometer for a leakage reading.

Schedule Your Duct Leakage Test in Rahway, NJ

Ensure your HVAC system maintains top efficiency, remains compliant, and delivers strong performance with dependable duct leakage test in Rahway, NJ. Whether you’re a homeowner aiming for better comfort or a contractor completing final approval, our certified team ensures fast, accurate, and affordable testing.

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

📞 Call 888-213-3975 ✉️ Request a Quote

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