Ductwork Services in Dallas, TX
Leaky ducts waste 20-30% of your cooling and heating. Flat-rate residential duct sealing, repair, and replacement in Dallas. Static pressure diagnostic $85 (waived with repair). Licensed TACLA126718E, EPA 608 Universal certified, family-owned since 2018.
How Much Does Ductwork Cost in Dallas?
Ductwork in Dallas starts at $85 for a static pressure diagnostic (waived with any repair). Most homes need 2-5 targeted repairs, not a full duct redesign. We're flat-rate, which means the price quoted before we start is the price you pay at the end. Frosty Club members save 10-15% on every job.
| Service | Regular Price | Frosty Club Member |
|---|---|---|
| Diagnostic / static pressure test(Waived with repair) | $85 | $72.25 |
| Duct sealing (per repair) | $350 | $297.50 |
| Full duct replacement (per run) | $700 | $595 |
| Plenum replacement | $1,200 – $1,500 | $1,020 – $1,275 |
| Basic tune-up (related upsell) | $150 | $127.50 |
Leaky Ducts Are an Indoor Air Quality Problem
Per the EPA, indoor air is 2-5x more polluted than outdoor air — and leaky ducts are one of the main causes. Every crack, loose connection, and failed tape seal pulls unfiltered attic air (dust, pollen, insulation fibers, rodent droppings) directly into your supply stream. Sealing and replacing bad runs is one of the highest-impact IAQ improvements we make.
Save More with Frosty Club
Basic ($99/yr):10% off all services | Premium ($300/yr): 15% off + $500 repair credit + 2 free tune-ups/year
Join Frosty ClubWhat Are the Most Common Ductwork Problems in Dallas?
Leaky and undersized ducts are the single most-missed cause of comfort problems I see in DFW homes. Here's what we find most often on Dallas diagnostic calls, and what each one typically costs to fix.
Uneven temperatures room-to-room
Classic sign of leaky supply runs or a failing zone damper. $85 diagnostic pinpoints the exact run. Fix is usually 1-3 duct repairs at $350 each.
Dusty rooms (no matter how often you clean)
Leaky returns pull unfiltered attic air straight into your supply stream. Sealing at $350 per repair stops the contamination at the source.
Climbing energy bills every summer
20-30% duct leakage means 20-30% more AC runtime. Sealing bad connections typically cuts summer bills 15-25%. 3-5 year payback.
Musty smell when the system turns on
Condensation inside flex liner leads to mold growth. You can't clean mold out of fiberglass — the only fix is replacement at $700 per run.
Rooms that never cool or heat enough
Usually undersized returns or crimped supply runs choking airflow. Manometer test during diagnostic measures exact loss. Fix varies by cause.
Allergy or asthma symptoms worse indoors
Leaky ducts pull pollen, dust, and insulation fibers into your breathing air. Duct sealing is one of the highest-impact IAQ improvements we make.
Why Do Dallas Homeowners Trust Frosty's for Ductwork?
Dallas ductwork problems are some of the worst in DFW because the housing is so old. Preston Hollow, Lakewood, and the M Streets are full of 1930s-50s Tudor and craftsman homes where central air was retrofitted in the 1960s-70s and the ductwork has been patched and re-patched ever since. It's common for me to pull 30-40% air leakage readings on smoke tests in these homes — which means nearly half of the air your AC is cooling is dumping into a 140-160°F attic before it ever reaches a register. Duct sealing ($350) helps, but in many cases the ducts are too far gone and need full replacement at $700 per run.
Oak Cliff and Bishop Arts bungalows (1920s-40s) have a different problem: the supply trunks are narrow and short, the returns are undersized, and the ducts often run through uninsulated crawl-type chases under the roof. North Dallas 1970s ranches off Preston Road run the original gray flex duct with taped joints — and that tape failed a decade ago in the attic heat. Uptown high-rises and Deep Ellum lofts have concrete-ceiling duct runs engineered for larger building footprints and then adapted for residential use; they often have restrictive transitions and long runs that drive static pressure way too high for the home-style equipment now installed.
Every ductwork job in Dallas includes a before-and-after static pressure reading. Target on a healthy residential system is under 0.5 inches of water column; most Dallas homes I first measure are running 0.9-1.4 — way too high, which means the blower is fighting hard and burning itself out. I don't sell standalone duct insulation as a product. If ducts are deteriorated enough to need it, they need full replacement, not a band-aid wrap.
Neighborhoods we serve in Dallas: Uptown, Oak Lawn, Preston Hollow, Lakewood, Lower Greenville, Bishop Arts, Oak Cliff, Deep Ellum, M Streets
Why Should I Trust Frosty's Credentials for Ductwork?
Because every credential is independently verifiable and directly tied to the work — Texas HVAC Contractor License TACLA126718E covers duct modification and airflow, EPA Indoor Air Quality guidance drives our sealing and replacement decisions, and U.S. DOE research documents the 20-30% energy savings that back our flat-rate pricing.
TACLA126718E
Texas HVAC Contractor License held by Mariafernanda Jacobo. Issued and regulated by the Texas Department of Licensing and Regulation.
EPA Indoor Air Quality
Per the U.S. EPA, leaky ducts are a primary contributor to poor indoor air quality. We measure, document, and fix.
DOE Energy Savings
The U.S. Department of Energy says duct losses can account for 20-30% of HVAC energy use. Sealing pays back fast.
Learn more about our credentials on our About page or visit omar-jacobo.com.
Related Services in Dallas
Frosty's covers every residential HVAC need in Dallas, TX — one phone line, one flat-rate pricing book, one licensed (TACLA126718E) family-owned team.
Nearby Cities We Also Serve
Same flat-rate ductworkpricing across every city we cover. If you're in a Dallas-adjacent neighborhood, these pages have local details for your ZIP.
From Our Blog
Deeper context on ductwork written by Omar Jacobo (EPA 608 #2396328).
- Ductwork Problems? How Bad Ducts Cost You MoneyLeaky, damaged ductwork wastes 20-30% of your cooled air. Learn the signs, repair costs, and when to replace. DFW homes. Call (469) 254-0548…Read article →
- Flower Mound HVAC: Why Your Upstairs Won't Cool DownFlower Mound homeowners: why your upstairs is hot, what it costs to fix, and when to replace. Larger homes need special attention. Call (469…Read article →
- 5 Signs Your Furnace Needs Repair (Before Winter Hits)5 warning signs your furnace needs repair — with exact DFW repair costs. Never repair a cracked heat exchanger. Call (469) 254-0548.Read article →
What Do Dallas Homeowners Ask About Ductwork?
How do I know if my Dallas ducts need replacing?
Signs: rooms that never cool or heat evenly (classic in Preston Hollow and Lakewood Tudors), high Oncor summer bills, visible dust at supply registers, musty smells when the AC runs, or ducts visibly detached in the attic. For 1930s-50s prewar homes and 1970s ranches with original flex, full replacement ($700/run) is usually the right call. For Uptown and Deep Ellum lofts, duct sealing ($350) often solves the airflow issue.
How much does duct replacement cost in Dallas?
Duct sealing $350 flat ($297.50 for Frosty Club members), duct replacement $700 per run ($595 for members), plenum replacement $1,200-$1,500. Most Dallas homes have 8-14 supply runs plus returns, so a full replacement typically lands at $5,000-$10,000. We quote flat-rate before starting and include before-and-after static pressure readings.
Can you seal my existing ductwork in Dallas instead of replacing it?
Sometimes — depends on the condition. If the duct material is intact but joints are leaking, sealing ($350) works well. If the flex duct inner liner has separated from the outer vapor barrier, or if metal ducts have rusted through (common in Lakewood and M Streets homes near White Rock Lake), sealing won't hold. We inspect first and give you the honest answer: seal-worthy, replacement-required, or borderline.
Why is my upstairs always hotter than downstairs in my Preston Hollow Tudor?
In 1930s-50s Preston Hollow and Lakewood 2-story homes, the retrofitted ductwork usually has undersized upstairs supply runs — the trunks and branches are too narrow and too long to deliver the CFM the upstairs zone needs. A Manual D duct sizing calculation identifies it, and the fix is usually adding a supply run or upsizing the return trunk. No amount of zoning will fix a fundamentally undersized duct.
Do you insulate ductwork in Dallas?
We don't offer standalone duct insulation as a product. If ducts are deteriorated enough to need insulation attention, they need full replacement — we don't band-aid. Modern R-8 insulated flex or R-6 insulated metal is built to manufacturer spec and is what we install on every new duct run we do in Dallas.
Will New Ductwork Help My Older R-22 System in Uptown and Oak Lawn?
Yes — EPA 608 Universal cert #2396328 lets me legally recover, recycle, and recharge R-22 under federal regulations. R-22 production ended in 2020 under the Clean Air Act phase-out (EPA.gov), so it now runs $200 per pound installed. A typical Uptown and Oak Lawn R-22 leak repair totals $650-$1,000: electronic leak detection ($250) or nitrogen leak test ($500) plus recharge at $200/lb. Optional leak seal $350 — but it can void manufacturer warranties, so I only recommend it in specific cases. For systems past 12 years with major leaks, planning the transition to R-454B or R-32 is usually the better economics. Read our R-410A phase-out explainer for DFW homeowners.
Should I Update Ductwork Before Replacing My R-410A System in Uptown and Oak Lawn?
Yes — ductwork outlives 2-3 system replacements. R-410A new-equipment production ended Jan 2025 under the AIM Act (Energy.gov), so your next replacement will use R-454B or R-32. Sizing the Uptown and Oak Lawn ductwork correctly now sets up the new system regardless of refrigerant. EPA 608 Universal cert #2396328 covers all refrigerant work. Read our R-410A phase-out explainer for DFW homeowners.
How Do I Fix Leaky Ductwork in Dallas?
Call (469) 254-0548 or request service online to book an $85 static pressure diagnostic (waived with any repair). We schedule duct diagnostics within 1-3 days and bring a manometer, bore-scope, and written report to every call. Flat-rate pricing — no surprises, no hourly charges.
Written by Omar Jacobo, EPA 608 Universal Certified Lead Technician at Frosty's HVAC LLC. Licensed TACLA126718E.
Written by
By Omar Jacobo
Texas Licensed HVAC Contractor #TACLA126718E · EPA #2396328
Co-Owner of Frosty's HVAC LLC, serving DFW since 2018. Learn more
Ready For Reliable HVAC Service?
Request service online, call for same-day help, or see your replacement price.
Call Now