Duct Leakage Test in Medford township, NJ

Guarantee your HVAC system runs efficiently and adheres to local requirements with quality duct leakage test in Medford township, NJ. Our certified technicians identify and measure air leaks in ductwork to help homeowners and builders improve comfort, reduce energy waste, and achieve compliance with state requirements.

Why Duct Leakage Test is Important In Medford township, NJ

States and municipalities have adopted the 2015 IECC, International Energy Conservation Code for single-family buildings and the 2018 International Energy Conservation Code for multi-family buildings. The change will introduce meaningful implications for home builders and HVAC contractors active 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 duct systems can be major sources of air leakage in homes across Pennsylvania, New Jersey, and Delaware? Leaked air can result in higher utility costs, extra load on your HVAC system, and dust and insulation traveling throughout your home. This makes duct leakage test a key step for new and older homes alike. Read ahead to see why duct leakage test is needed and what advantages it offers.

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How a Duct Leakage Test Is Conducted

To begin performing a duct leakage test in Medford township, NJ, your technician closes off all supply and return registers except the main return or air handler system. A specially calibrated duct blaster is then installed onto the opening. The fan lowers the pressure inside the ducts, helping reveal any leakage points.

The duct blaster works together with a precision pressure sensor to measure airflow and pinpoint leaks in the ductwork without disturbing your home. A duct leakage test — also called a duct blaster test — locates the points where duct air escapes, helping you implement the right sealing solution.

duct leakage test is quick, neat, and intentionally non-intrusive for anyone living in the home. Most tests in Medford township, NJ finish within 30 to 60 minutes, and the benefits to your home’s comfort and efficiency 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 identify subtle pressure differences, helping determine how much air is leaking from the ducts. Understanding this number helps you recognize where issues exist, plan meaningful improvements, and check your home against local energy code requirements in Medford township, NJ.

Cost of Excessive Duct Leakage

If your home has elevated utility bills, temperature imbalances, or frequent HVAC service calls, duct leakage may be responsible. According to ENERGY STAR, most households lose 20% to 30% of their heated or cooled air because of duct leaks. Hot or cold outdoor air infiltrating your system makes your HVAC system work overtime, which boosts energy costs and reduces comfort.

Overworked equipment also increases the likelihood of breakdowns and drives up repair costs. Proper duct sealing helps support the long-term durability of your HVAC system, lengthening its lifespan and minimizing ongoing maintenance demands.

Duct leaks can also enable dust, mold spores, elevated moisture, and unwanted contaminants to infiltrate 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 requires all newly constructed homes to have fully sealed ductwork with modern, energy-saving materials such as mastic, foil tape, and insulation. But what if some leaks are hidden within the depths of your walls or ceilings?

Aerosol sealing technology (AeroSeal) can identify and seal leaks that lie deep inside ductwork. To perform the technique, all vents are sealed except a single access opening. The HVAC system is isolated, and a machine is hooked into 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 excels at sealing small to medium leaks. However, bigger holes often must be sealed manually with mastic and tape. Technicians use a duct leakage test before and after aerosol sealing to evaluate how much leakage has been lowered and verify the results.

Common Areas of Duct Leakage

The most frequent area where ducts lose air is at the joints. Ductwork consists of several metal sections pressed together with tight fittings and metal bands, yet these connections are almost never fully airtight.

As your HVAC system cycles through heating and cooling each year, the ducts naturally expand and contract. Over time, this movement leads to joint loosening, generating gaps and leaks — a clear reason duct leakage test is recommended for new and older homes in Medford township, NJ.

Many energy auditors investigate duct leakage by running their hands over the ducts and using a small tool to determine the width of joint gaps. If your duct system has not been sealed with mastic and approved tape, there is a high chance that leakage is occurring.

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

To achieve a passing duct leakage result, your system has to measure below 4 CFM per 100 square feet with the air handler installed, or 3 CFM per 100 square feet without the air handler. For new construction, an occupancy certificate cannot be issued unless the home passes a duct leakage test.

If your home in Medford township, NJ fails a duct leakage test, you are probably spending more than you should on heating and cooling — while also putting long-term stress on your HVAC system. Meeting the 3–4 CFM requirement is necessary not only for meeting code standards but also for ensuring strong energy efficiency and indoor comfort.

Your technician will also recommend effective ways to fix leakage issues so you can earn a passing score, save on utilities, and improve home performance.

Local Energy Audits — affordable duct leakage test in Medford township, NJ

Local Energy Audits proudly serves customers throughout Medford township, NJ and surrounding areas. 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 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 all the ducts and registers sealed tightly using duct mask tape on both sides—supply and return.

After the registers are sealed, we install the duct tester on the unit or on a main return.

The ducts are then reduced to a depressurized state of 25 Pascals. With them depressurized, the nanometer gives us the duct leakage reading.

Schedule Your Duct Leakage Test in Medford township, NJ

Ensure your HVAC system remains efficient, code-compliant, and functioning optimally with skilled duct leakage test in Medford township, 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 hands-on guidance to help you pass your test, reduce wasted energy, and ensure the long-term health of your HVAC system.

📞 Call 888-213-3975 ✉️ Request a Quote

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