What a leaky duct diagnosis involves
We start at the equipment and work outward. That means walking the runs in the basement, crawlspace or attic, checking the plenum connections, looking at every takeoff, elbow and boot, and feeling for air escaping at seams and tape that has let go. We measure airflow at registers and compare what the system should deliver to what actually arrives in each room. Older homes often have panned joist returns pulling air from places you would never choose. We write down what we find and show you the spots that matter.
What we check and what we correct
We look at disconnected flex runs, crushed sections behind storage, boots that have pulled away from the subfloor, duct tape that dried out decades ago, and returns that are undersized for the blower. We check static pressure to see whether the system is fighting restriction as well as leakage. Corrections usually mean mastic sealing at joints, mechanical fasteners on flex connections, new boot seals, insulating runs in unconditioned space, and sometimes rebuilding a section of trunk that has been patched too many times.
How we decide it is the right call
Leaky ducts are worth chasing when the equipment itself tests fine but comfort does not match it. If your furnace or AC cycles normally, the refrigerant charge is where it should be, and rooms still run five or more degrees apart, the delivery system is the suspect. Dusty registers, whistling at the plenum and a hot second floor in July all point the same direction. If we find the real problem is equipment sizing or a failing blower, we say so rather than sealing ducts that were never the issue.
What every visit includes
You approve a written quote first
Covering 171 cities across Illinois, Indiana, Kentucky and 3 more.A real person answers
Open 7 days, 8:00 AM to 5:00 PM ET.Independent of every manufacturer
Carrier, Trane, Lennox, Goodman and more. We are not an authorized dealer for any of them.Leaky Duct Diagnosis — quick answers
How long does a duct leak diagnosis take?
Most single family homes take a couple of hours, depending on how accessible the runs are. Finished basements and tight crawlspaces slow us down. We give you findings the same visit, along with what we recommend sealing first.
Can leaky ducts affect my indoor air quality?
Yes. Returns that leak in a crawlspace or attic pull dust, humidity and musty air into the system and push it through the house. Sealing those return leaks is often the single biggest IAQ improvement in an older home.
Do I need my whole duct system replaced?
Usually not. Most systems need targeted sealing, better support and a few rebuilt connections. We only recommend replacing a section when the metal is corroded through or flex has collapsed and cannot be reworked.
How it works
- Step 1
Tell us the symptom
Call or fill in the quote form. We ask what changed, when it started, and what the thermostat reads. That short conversation tells us whether you need a visit today or tomorrow morning.
- Step 2
We diagnose on site
A technician checks the thermostat, the electrical side, airflow through the filter and ducts, and the equipment itself. We find the actual cause instead of swapping parts and hoping the noise goes away.
- Step 3
You decide before we work
We explain what failed, what the repair involves, and what we would do if it were our own house. Nothing gets replaced until you say go. Then we test the system before leaving.
- A real person answers
- Open 7 days
- Written quote before work starts
Why homeowners call us
- Old houses and new onesWe are used to century-old homes with retrofitted ductwork and 1970s subdivisions with original returns. Tight crawl spaces, low basement headroom and odd attic runs are normal parts of the day for us, not surprises that stall the job.
- Built for the swingsHumid summers push AC systems hard and January freezes expose weak igniters and cracked flues. We repair for both extremes across the region, so the fix holds when the weather turns instead of failing the first hard week.
- Air conditioning and heating bothAir conditioner repair in July, heating repair in January, and the IAQ and airflow problems that hide in between. One crew that knows how your cooling and heating share the same blower and the same duct system.
- Plain talk, no pressureWe tell you when a repair makes sense and when replacement is the honest answer. No scare tactics about your BTU load, no upsell scripts. You get the condition of the system and a clear next step.
- All major brands, gas & electricEvery major HVAC brand, gas and electric, handled by an independent crew.
- Straight answersIf a system is not worth repairing, we say so, often right on the phone.
Leaky Duct Diagnosis
Ready to book leaky duct diagnosis?
Describe the system and your ZIP. The written quote comes before any work.
- A real person answers
- Open 7 days
- Written quotes
- All major brands
- Gas & electric
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