What the diagnosis actually involves
We start at the equipment and work outward. A technician measures airflow and temperature at the plenum, then at registers in the rooms you told us about, so we can see how much air goes missing along the way. Older homes in this region often have retrofit trunks squeezed through joist bays, and that is where joints separate. We walk the accessible runs in basements, crawlspaces and attics, checking seams, boots, takeoffs and any flexible duct that has been crushed or kinked.
What we check and what we seal
We look for open joints, failed tape, disconnected boots at floor registers, panned joist returns pulling air from the basement, and duct sections that were never sealed when a system was replaced. We also check whether returns are undersized, since a starved blower makes leakage worse. Repairs usually mean mastic and mechanical fasteners at joints, new collars where takeoffs have pulled loose, replacing crushed flex, and insulating runs passing through unconditioned space in long heating seasons.
How we decide it is the right call
If your equipment is running well and one part of the house still lags, ductwork is the likely cause and diagnosis comes first. We would rather measure than guess, because sealing the wrong run changes nothing. When we find leakage concentrated in a few accessible joints, repair is straightforward. When ducts are undersized or badly routed, we tell you that plainly and lay out options. If the real problem is equipment, we say so and move to heating repair or air conditioning repair instead.
What you get on every job
You approve a written quote first
Covering 60 cities across Indiana, Kentucky, Michigan and 4 more.Phones answered by people
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 do I know my ducts are leaking and not my furnace failing?
Leaking ducts usually show up as uneven room temperatures while the equipment itself runs normally. Failing equipment tends to affect the whole house at once. Our measurements at the plenum and registers separate the two.
Do you have to open walls to find duct leaks?
Rarely. Most leakage in older homes sits at accessible joints, boots and takeoffs in basements, crawlspaces and attics. We inspect and measure those first and only discuss opening finished areas if readings point there.
Will sealing ducts help in both heating and cooling season?
Yes. Air lost through open joints is lost year round, though long winters in this region make it more noticeable when heating. Sealing also helps cooling delivery to upstairs bedrooms during summer.
How it works
- Step 1
Tell us the symptom
Call or fill in the quote form and describe what changed. Warm air, no air, a smell, a noise, a breaker that keeps tripping. Details on the phone shorten the visit considerably.
- Step 2
We diagnose on site
A technician checks the thermostat, airflow, electrical connections, the outdoor unit and the heat exchanger side before naming a cause. You get the finding in plain words, not a parts list you cannot read.
- Step 3
You approve the repair
We explain what failed, what it takes to fix it, and what happens if you wait. Nothing gets replaced without your say so. Most common repairs are handled the same visit.
- A real person answers
- Open 7 days
- Written quote before work starts
Why homeowners call us
- Old housing stock is normal hereBasements with converted octopus trunk lines, ducts retrofitted around joists, returns that were never sized right. We work in these houses constantly and we size the repair to the house you actually have.
- Long heating seasonsFurnaces in this region run hard from October into April, and lake effect stretches it further. We know what wear looks like at that mileage, from cracked igniters to blower motors that have been dragging for two winters.
- Cooling and heating bothOne crew for air conditioning repair and heating repair. The same ductwork moves air in July and January, so a technician who understands both sides catches problems a single-season contractor tends to walk past.
- Plain talk about repair versus replaceSometimes a part fixes it for years. Sometimes you are putting money into a system that is done. We tell you which one we think you are looking at and why, then leave the decision with you.
- All major brands, gas & electricIndependent service on Carrier, Trane, Lennox, Goodman, York and the rest.
- Straight answersNot worth fixing? We say that out loud, and often it saves you the visit fee.
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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