Duct Leakage Test in Center Valley, PA

Protect system efficiency and meet local building codes by choosing certified duct leakage test in Center Valley, PA. Our certified technicians trace and measure duct leaks, supporting homeowners and builders in enhancing comfort, lowering energy waste, and staying compliant with state codes.

Why Duct Leakage Test is Important In Center Valley, PA

Across many states and municipalities, the 2015 IECC, International Energy Conservation Code applies to single-family homes, while the 2018 International Energy Conservation Code governs multi-family buildings. The change will result in several substantial implications for home builders and HVAC contractors engaged in work across the state. A Duct Leakage Test as well as a Blower Door Test in newly constructed or remodeled homes is now required in accordance with 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 elevate your energy bills, make your HVAC system work harder, and distribute insulation fibers and dust through your home. This makes duct leakage test essential for both new and older homes. Continue reading to understand why duct leakage test matters and how it can benefit you.

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How a Duct Leakage Test Is Conducted

To get started with a duct leakage test in Center Valley, PA, the technician will block every supply and return register except the main return or air handler. A duct blaster, which is a specially calibrated fan, is then installed at the opening. The fan depressurizes the ducts, helping identify all points where air may be escaping.

The duct blaster, aided by a precision pressure sensor, accurately measures airflow and reveals duct leaks without interrupting activities in 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 quick, clean, and non-intrusive for residents. Most tests in Center Valley, PA take between 30 and 60 minutes, and the improvements they deliver can elevate comfort and efficiency for years ahead.

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 monitor tiny pressure fluctuations that indicate how much air is leaking through 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 Center Valley, PA.

Cost of Excessive Duct Leakage

If you’re experiencing spikes in utility bills, uncomfortable temperature variations, or ongoing HVAC repair needs, duct leakage may be to blame. According to ENERGY STAR, the typical home loses between 20% and 30% of its conditioned air due to duct leaks. When outdoor temperatures enter your system, the HVAC must work harder to compensate, resulting in higher energy costs and reduced comfort.

Overworked equipment also produces more frequent issues that require costly repairs. Proper duct sealing helps safeguard the long-term reliability of your HVAC system, extending its lifespan and reducing how often maintenance is needed.

Duct leaks can also introduce dust, mold spores, excess humidity, and other contaminants into 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 states that new homes must have duct systems sealed completely with energy-efficient products such as mastic, foil tape, and insulation. But what if the leaks you’re dealing with are deep inside the walls or ceilings?

Aerosol sealing technology (AeroSeal) helps target hard-to-reach openings deep within ducts. To execute this method, all vents are sealed shut except a single access point. The HVAC system is isolated, and a machine is attached to the duct network. It pressurizes the ducts and emits a fine aerosolized sealant designed to fill small leaks unreachable with standard sealing.

This method is ideal for small to medium leaks. However, any large openings will still need manual sealing with mastic and tape. Technicians carry out a duct leakage test before and after aerosol sealing to assess how much leakage has improved and ensure the treatment was effective.

Common Areas of Duct Leakage

The most common point where ducts leak air is along the joints. Ductwork is made from multiple metal pieces pressed together with tight fittings and metal bands, but these connections are rarely completely airtight.

As your HVAC system moves through annual heating and cooling cycles, the ductwork expands and then contracts. Over time, this movement makes the joints loosen, forming gaps and leaks — meaning a duct leakage test is advised for both new and older homes in Center Valley, PA.

Many energy auditors look for duct leakage by running their hands along the ducts and using a small tool to measure the width of gaps at the joints. If your duct system hasn’t been sealed with mastic and approved tape, there is a strong likelihood that leakage is happening.

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

To achieve a passing duct leakage result, your system should stay under 4 CFM per 100 square feet with the air handler attached, or 3 CFM per 100 square feet without it. For new construction, a passing duct leakage test is essential before the home can qualify for an occupancy certificate.

If your home in Center Valley, PA is unable to pass a duct leakage test, you are probably spending too much on heating and cooling — while your HVAC equipment endures long-term stress. Meeting the 3–4 CFM requirement is important not only for the inspector, but also for maximizing energy efficiency and comfort in your home.

Your technician will also provide expert strategies to address leakage concerns, helping you achieve a passing score, bring down utility bills, and boost home efficiency.

Local Energy Audits — affordable duct leakage test in Center Valley, PA

Local Energy Audits is proud to serve families and builders across Center Valley, PA and the surrounding local 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 schedule 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 secure the duct tester to the HVAC unit or to a main return.

The ducts are then depressurized to 25 Pascals. With the ducts at this pressure, we can use the nanometer to measure the duct leakage.

Schedule Your Duct Leakage Test in Center Valley, PA

Ensure your HVAC system maximizes efficiency, meets required standards, and performs consistently with thorough duct leakage test in Center Valley, PA. Whether you’re a homeowner optimizing comfort or a contractor completing mandatory inspections, our certified team ensures fast, accurate, and affordable testing.

We use industry-standard duct blaster equipment and supply on-site support to help you pass your test, curb energy waste, and maintain your HVAC system’s long-term performance.

📞 Call 888-213-3975 ✉️ Request a Quote

Serving homeowners, builders, and contractors across Center Valley, PA with dependable and energy-efficient testing solutions.