Duct Leakage Test in Plymouth Meeting, PA

Guarantee your HVAC system runs efficiently and adheres to local requirements with quality duct leakage test in Plymouth Meeting, PA. Our certified technicians measure and identify ductwork air leaks, assisting homeowners and builders in boosting comfort, limiting energy waste, and maintaining state compliance.

Why Duct Leakage Test is Important In Plymouth Meeting, PA

In most states and municipalities, the 2015 IECC, International Energy Conservation Code is required for single-family homes, while the 2018 International Energy Conservation Code is required for multi-family homes. The change will bring notable implications for home builders and HVAC contractors working throughout 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 ducts often contribute significantly to air leakage problems in homes throughout Pennsylvania, New Jersey, and Delaware? Leaked air can increase your energy costs, overwork your HVAC system, and distribute insulation particles and dust around your home. This makes duct leakage test critical for both modern and older homes. Continue reading to explore why duct leakage test is important and how you benefit from it.

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How a Duct Leakage Test Is Conducted

To start a duct leakage test in Plymouth Meeting, PA, the technician will close and seal every supply and return register except the main return or air handler. A specially calibrated fan, known as a duct blaster, is then attached to the opening. The purpose of this fan is to depressurize the duct system, creating the ideal conditions to identify where air is escaping.

The duct blaster teams up with a precision pressure sensor to measure airflow accurately and locate duct leaks without affecting your home. 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, low-impact, and does not disturb residents. Most tests in Plymouth Meeting, PA take only 30 to 60 minutes, yet the comfort and efficiency gains can last for years.

How to Measure Duct Leakage

Duct leakage is measured using cubic feet per minute (CFM) per 100 square feet of conditioned floor area. 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 reveal problem areas, consider enhancement strategies, and validate that your home meets local energy code requirements in Plymouth Meeting, PA.

Cost of Excessive Duct Leakage

If your home suffers from costly utility bills, uneven comfort levels, or persistent HVAC repairs, duct leakage may be contributing. According to ENERGY STAR, duct leakage causes homeowners to lose 20%–30% of their conditioned air on average. Outside air that’s too hot or too cold entering your system strains your HVAC, resulting in higher energy consumption and less comfort.

Overworked equipment also puts extra stress on the system, resulting in breakdowns and increased repair costs. Proper duct sealing helps keep your HVAC system healthy over the long run, prolonging its lifespan and lowering continued maintenance needs.

Duct leaks can also create openings for dust, mold spores, moisture, and various contaminants to enter 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 mandates fully sealed duct systems in new homes, made from energy-efficient materials like mastic, foil tape, and proper insulation. But what happens when leaks are trapped deep inside wall or ceiling cavities?

Aerosol sealing technology (AeroSeal) allows technicians to seal leaks located inside inaccessible parts of ductwork. To perform this method, all vents are sealed off except for one access point. The HVAC system is isolated, and a machine is connected to the duct system. It pressurizes the ducts and sends out a fine aerosol mist that seals tiny openings traditional sealing cannot reach.

This method provides strong results for small and medium leaks. However, significant openings may still require mastic and tape by hand. Technicians complete a duct leakage test before and after aerosol sealing to track leakage reduction and confirm the treatment’s success.

Common Areas of Duct Leakage

The most common place for ducts to leak air is through the joints. Ductwork is made of multiple metal pieces pressed together using tight fittings and metal bands, but these connections are rarely airtight.

As your HVAC system runs through seasonal heating and cooling, the ducts experience ongoing expansion and contraction. 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 Plymouth Meeting, PA.

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 wasn’t properly sealed using mastic and approved tape, air leakage is very likely occurring.

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

To achieve a passing duct leakage result, your system should come out under 4 CFM per 100 square feet in tests with the air handler, or 3 CFM per 100 square feet without the air handler. For new construction, a duct leakage test must be passed before any home is eligible to receive an occupancy certificate.

If your home in Plymouth Meeting, PA does not meet duct leakage standards, you are likely overpaying for heating and cooling — and adding unnecessary strain to your HVAC equipment. Meeting the 3–4 CFM requirement is indispensable not only for compliance purposes but for ensuring strong comfort and energy savings.

Your technician will also give informed guidance on addressing leakage problems, enabling you to pass the test, reduce energy bills, and enhance your home’s performance.

Local Energy Audits — affordable duct leakage test in Plymouth Meeting, PA

Local Energy Audits proudly helps clients across Plymouth Meeting, PA and surrounding communities. We specialize in assessing duct leakage and energy inefficiencies with blower door tests and duct leakage tests. Whether it’s a new build or a current home, we’re here to support you.
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 all the ducts and registers sealed tightly using duct mask tape on both sides—supply and return.

After the registers are sealed, we connect the duct tester to either the main HVAC unit or its primary 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 Plymouth Meeting, PA

Ensure your HVAC system reaches optimal efficiency, satisfies code standards, and performs smoothly with expert duct leakage test in Plymouth Meeting, PA. Whether you’re a homeowner enhancing indoor comfort or a contractor finishing a final inspection, our certified team offers fast, accurate, and affordable testing.

We use industry-standard duct blaster equipment and offer on-site expertise to help you pass your test, reduce unnecessary energy loss, and protect your HVAC system over the long term.

📞 Call 888-213-3975 ✉️ Request a Quote

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