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Get your free estimateRheem Ductwork Repair: The Dallas Owner’s Guide
Rheem ductwork repair in Dallas typically runs $350 – $900 installed, depending on how much duct has failed and whether we’re sealing, patching, or replacing sections. We stock Rheem-compatible duct materials on our trucks and can usually complete most repairs the same day we diagnose the problem. Most Dallas homeowners discover they need ductwork repair the same way: a room that never cools, a spike in the electric bill, or dust showing up on furniture within days of cleaning it.
Ductwork is not a part that fails all at once like a capacitor or a contactor. It fails slowly, and that slow failure is exactly what makes it expensive. A small separation at a joint lets conditioned air leak into the attic all summer, which means your Rheem system runs longer, works harder, and still leaves the back bedroom warm. In Dallas, where attic temperatures routinely hit 140°F in July, a duct leak doesn’t just waste air. It pulls that hot attic air into the system through any gap, which means your Rheem unit is fighting heat it never should have seen. Victor Mancini has spent years telling Dallas homeowners the same thing: tell the customer the number before the work starts. Everything else follows from that. And ductwork repair is where that matters most, because the fix is usually simple once you find the leak.
Which Rheem Models This Applies To
The ductwork connected to your Rheem system is not actually made by Rheem in most cases. It’s made by duct manufacturers and sized to match the airflow requirements of your specific Rheem air handler or furnace. What matters for compatibility is the duct diameter, the CFM (cubic feet per minute) your Rheem unit is designed to move, and whether you have a flex duct or rigid sheet metal setup. We work on both.
For Rheem systems installed in Dallas over the last 15 years, the typical configuration is R-6 insulated flex duct in diameters from 6 to 16 inches, depending on the room load and the run length. Rheem’s larger 4- and 5-ton units (common here because of our cooling loads) often require 14- or 16-inch trunk lines with 6- to 8-inch branch runs to individual rooms. One compatibility gotcha we see in North Texas: a contractor installs the right Rheem unit but undersized the return duct to save money up front. The result is a system that never moves enough air, runs hot, and shortens the life of the blower motor. When we repair ductwork on Rheem equipment, we check the return side first, because Rheem’s higher-efficiency units are less forgiving of restricted airflow than older models. We use OEM-grade duct materials matched to your system’s static pressure, and when it comes to aftermarket versus OEM, ductwork is one area where the material grade matters more than the brand label. R-6 rated flex duct is R-6 rated flex duct, but we won’t install the cheaper R-4.2 grade that some budget outfits use in attics.
Styles & brands we work with






Signs Your Rheem Ductwork Repair Is Failing
- One room is constantly warmer than the rest of the house. This is the single most common symptom we see in Dallas. A duct run to that room has separated at a joint or been crushed, so the room is getting a fraction of the air your Rheem system is sending.
- Your electric bill spiked without a corresponding heat wave. Leaking ducts mean your Rheem unit has to run 20 – 40% longer to hit the thermostat setpoint. In a Dallas summer, that’s real money, and it shows up before you feel any comfort change.
- Dust accumulates on surfaces within a day or two of cleaning. A duct breach in the attic pulls in insulation fibers and dust from the attic space, then blows them through every register in the house. If the dust is dark and grainy, that’s often attic insulation.
- You can hear air moving, but you can’t feel it at the register. That hissing sound near the air handler or along the ceiling is air escaping through a gap in the duct. The air you paid to condition is being dumped into the attic.
- The register closest to your Rheem unit blows hard, but rooms farther away barely whisper. A major trunk-line disconnect or collapse sends most of your airflow through the shortest, easiest path. The far rooms get starved, and your system runs longer to try to satisfy the thermostat.
See the difference
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After
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After
Before
AfterReplacement Cost & What’s Included
Most Rheem ductwork repairs in Dallas fall between $350 and $900. Here’s how that breaks down:
- Sealing a single separated joint or small leak: $350 – $500
- Patching or replacing a crushed 6 – 8 inch flex run: $450 – $650
- Replacing a damaged trunk line or multiple branch runs: $650 – $900
- Full duct inspection with a written report of findings: included with any repair
The price depends on how much duct has to come out, how accessible your attic or crawl space is, and whether the original install used proper materials or cheap shortcuts. We give you the written price before any tool comes off the truck, and that number doesn’t change at the door. Every repair comes with our 365-Day Done Right Promise in writing: if the repair fails within a year, we come back and correct it at no charge. No arguing, no fine print, just the guarantee on paper before the technician leaves.
DIY or Call Us?
There’s one thing you can safely check yourself: look for obvious gaps where a duct has come apart. If you can see a visible separation between two duct sections, that’s a real finding and worth a call. But we don’t recommend crawling into a Dallas attic in July to do the repair yourself. Attic temperatures can exceed 140°F, and respiratory irritation from fiberglass insulation is a genuine risk without proper gear. The bigger problem is false confidence: a homeowner tapes up a duct with hardware-store duct tape (which fails within weeks in heat), and the same leak comes back in August. If you suspect ductwork problems, call (430) 213-5796 and we’ll diagnose it properly the first time.
FAQs
Flex duct typically lasts 15 – 20 years in Dallas before the inner liner degrades and the outer jacket starts to tear. Attic heat accelerates that lifespan, so ducts in poorly ventilated attics often fail closer to the 10 – 12 year mark. If your home was built 15 or more years ago and you’re seeing consistent comfort problems, a full duct inspection is the place to start. Call (430) 213-5796 and we’ll tell you exactly what needs attention.
Yes, most ductwork problems can be repaired rather than replaced. A separated joint, a crushed flex run, or a damaged section of trunk line is usually a targeted fix. Full duct replacement is only the right call when the system is old, undersized for your Rheem unit, or failing in multiple places at once. We’ll tell you which situation you’re in before any work begins.
Most Rheem ductwork repairs take 2 – 4 hours from diagnosis to completion, and we can usually handle them same-day. More extensive work, like replacing a long trunk line or reworking multiple branch runs, may take a full day. We’ll give you a firm arrival window and the written price before work starts, so you know exactly what to expect going in.
Yes, we stock R-6 rated flex duct in the most common Dallas sizes (6, 8, 10, 12, and 14 inch), along with the collars, mastic, and fasteners needed for a proper seal. We also carry common sheet metal fittings for trunk line repairs. For anything unusual, we can usually have the material in hand within a day.
If your Rheem system isn’t cooling like it should and you suspect ductwork is the problem, call us at (430) 213-5796. We’ll give you a straight answer about what’s wrong, a written price before any work starts, and a repair that’s guaranteed in writing for 365 days.
Written by Victor Mancini, Owner, Cold Harbour Heating and Air Dallas at Cold Harbour Heating and Air Dallas, serving Dallas and nearby areas.