Duct Leakage Test in River Edge, NJ

How a Duct Leakage Test Is Conducted

To start conducting a duct leakage test in River Edge, NJ, the technician seals all supply and return registers other than the main return or the air handler. 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 uses its precision pressure sensor partner to measure airflow and uncover duct leaks without causing any home disruption. A duct leakage test — often described as a duct blaster test — identifies leaking areas in your ducts so you can determine the most efficient sealing fix.

duct leakage test is prompt, clean, and does not interrupt residents’ activities. Most tests in River Edge, NJ take only 30 to 60 minutes, yet the comfort and efficiency gains can last for years.

How to Measure Duct Leakage

Duct leakage is reported in cubic feet per minute (CFM) per 100 square feet of conditioned home area. Your technician uses a nanometer to detect small pressure differences, which indicate how much air is leaking through the ducts. Understanding this number helps you reveal problem areas, consider enhancement strategies, and validate that your home meets local energy code requirements in River Edge, NJ.

Cost of Excessive Duct Leakage

If you’re encountering increased energy bills, temperature inconsistencies, or constant HVAC repairs, duct leakage could be the source. According to ENERGY STAR, the majority of homes lose 20% to 30% of conditioned air through duct leaks. 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 makes breakdowns more common and repairs more expensive. Proper duct sealing helps uphold the long-term performance of your HVAC system, stretching its lifespan and decreasing routine maintenance demands.

Duct leaks can also let dust, mold spores, moisture, and other pollutants enter the duct system. This can intensify allergy symptoms, harm indoor air quality, and cause long-term structural damage behind walls or ceilings.

How to Properly Seal Ductwork in an Old Home

The 2015 IRC/IECC requires new homes to use fully sealed duct systems crafted from up-to-date, 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) makes it possible to seal leaks found deep within the ductwork. To perform the process, technicians seal all vents but leave one access point open. The HVAC system is isolated, and a machine is connected to the duct system. 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 use before-and-after duct leakage tests to measure improvement and make sure the aerosol sealing process was successful.

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 regulates temperatures through the seasons, the ducts expand when heated and contract when cooled. Over time, this movement loosens the joints, causing gaps and leaks — which is why both new and older homes in River Edge, NJ should consider a duct leakage test.

Many energy auditors detect duct leakage by physically checking the ducts and using a small tool to assess the width of joint gaps. If your duct system has not been properly sealed with mastic and approved tape, it’s very likely that leakage exists.

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 passing duct leakage test is essential before the home can qualify for an occupancy certificate.

If your home in River Edge, NJ doesn’t receive a passing duct leakage result, you are likely overpaying for heating and cooling — and putting significant long-term strain on your HVAC setup. 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 provide skilled recommendations to resolve leakage problems so you can reach a passing score, decrease energy costs, and improve home performance.

Local Energy Audits — affordable duct leakage test in River Edge, NJ

Local Energy Audits is proud to assist customers across River Edge, NJ and its surrounding communities. 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.