Duct Leakage Test in Clementon borough, NJ

How a Duct Leakage Test Is Conducted

To set up a duct leakage test in Clementon borough, NJ, the technician begins by sealing all supply and return registers, leaving only the air handler or main return open. A duct blaster, designed as a calibrated testing fan, is then attached to the duct system. Its purpose is to depressurize the ducts and uncover leak points.

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 — also known as a duct blaster test — pinpoints where air is escaping from your ducts, helping you choose the best sealing methods.

duct leakage test is quick, clean, and non-intrusive for residents. Most tests in Clementon borough, 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 expressed in cubic feet per minute (CFM) per 100 square feet of the home’s conditioned area. Your technician uses a nanometer to register small pressure differences, which help calculate how much air is leaking from the ducts. Understanding this number allows you to pinpoint problem areas, assess needed improvements, and confirm whether your home satisfies local energy code requirements in Clementon borough, NJ.

Cost of Excessive Duct Leakage

If you are experiencing high utility bills, uneven temperatures, or frequent HVAC repairs, duct leakage may be the cause. According to ENERGY STAR, most homes lose 20% to 30% of their conditioned air through leaking ductwork. Hot or cold air entering from outside increases the workload on your HVAC system, leading to higher energy bills and a drop in comfort.

Overworked equipment also heightens the chance of system failures and expensive repairs. 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 negatively influence allergies, weaken indoor air quality, and lead to expensive long-term damage behind walls or ceilings.

How to Properly Seal Ductwork in an Old Home

The 2015 IRC/IECC mandates fully sealed duct systems in new homes, made from energy-efficient materials like mastic, foil tape, and proper insulation. But what if the leaks you’re dealing with are deep inside the walls or ceilings?

Aerosol sealing technology (AeroSeal) is an effective solution for reaching hidden ductwork leaks. 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 works very well for small to medium leaks. However, larger openings may still need to be sealed manually 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 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 shifts between hot and cold cycles all year long, the ductwork expands and contracts. 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 Clementon borough, NJ.

Many energy auditors test for duct leakage by feeling along the ducts and using a small tool to gauge how wide the gaps are at the joints. 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 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, builders must ensure the home passes a duct leakage test before an occupancy certificate is granted.

If your home in Clementon borough, NJ doesn’t pass a duct leakage test, chances are you’re paying more for heating and cooling — and adding long-term stress to your HVAC equipment. 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 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 Clementon borough, NJ

Local Energy Audits is honored to serve customers in Clementon borough, 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.