Leaky ducts waste 20-30% of your cooling and heating. Flat-rate residential duct sealing, repair, and replacement in McKinney. Static pressure diagnostic $85 (waived with repair). Licensed TACLA126718E, EPA 608 Universal certified, family-owned since 2018.
Real stories from recent Frosty's HVAC jobs in McKinney, TX -- published straight from the field.
Over on Eddington Dr in McKinney, a clogged AC drain line had the overflow pan filling up and water dripping outside the home. Our tech flushed both the primary and secondary drain lines, and now the water is flowing exactly like it should. One happy family, cool and worry-free a...
Over on Tangle Ridge Dr in McKinney, a family was struggling with a system that just wasn't cooling. Our tech tracked it down to an airflow restriction from a dirty filter, swapped out the filter, and gave the whole system a thorough once-over — inspecting the condenser and evapo...
When our tech arrived on Jace Dr in McKinney, this family's system had stopped cooling because it was low on refrigerant. To keep them comfortable without stretching the budget, they chose to have us add a leak-seal treatment and recharge the unit back to spec — an honest, tempor...
Ductwork in McKinney 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 | $0 — never for members |
| 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 |
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.
Basic ($99/yr):10% off all services | Premium ($300/yr): 15% off + $500 repair credit + 2 free tune-ups/year
Join Frosty ClubLeaky 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 McKinney diagnostic calls, and what each one typically costs to fix.
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.
Leaky returns pull unfiltered attic air straight into your supply stream. Sealing at $350 per repair stops the contamination at the source.
20-30% duct leakage means 20-30% more AC runtime. Sealing bad connections typically cuts summer bills 15-25%. 3-5 year payback.
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.
Usually undersized returns or crimped supply runs choking airflow. Manometer test during diagnostic measures exact loss. Fix varies by cause.
Leaky ducts pull pollen, dust, and insulation fibers into your breathing air. Duct sealing is one of the highest-impact IAQ improvements we make.
McKinney ductwork runs the full range because the city built out across 40+ years and a population explosion from 55,000 to over 210,000. Pre-1950 Historic Downtown homes near the Square still carry original galvanized sheet-metal trunk lines — in a few documented cases with asbestos-wrapped insulation that requires proper containment procedures. Stonebridge Ranch and the Eldorado Pkwy corridor (1988–2005) are gray flex duct territory, where mastic tape on takeoffs failed in North Texas attic heat a decade ago and nobody noticed. Smoke-test leakage in those homes routinely reads 25–35%, which according to Energy.gov means one-quarter to one-third of the conditioned air you're paying Oncor to cool never reaches a register. Craig Ranch, Tucker Hill, and Trinity Falls (2010+) use newer R-6 and R-8 insulated flex — better material but often undersized because the builder's HVAC sub skipped a proper Manual D calculation to save time on a 200-home tract.
The airflow problem specific to McKinney's golf-course and lake-adjacent two-stories is undersized upstairs supply runs. Craig Ranch homes backing the TPC Craig Ranch golf course have duct runs traveling 30+ feet through 140°F+ attic space to reach upstairs bedrooms — by the time the CFM arrives, a significant percentage of cooling capacity is lost to attic heat gain. A Manual D sizing calculation (the ACCA duct design standard per Energy.gov) measures actual delivered CFM against the room's cooling load. The fix is almost always adding a supply run or upsizing the return on the upstairs zone — not adding more zoning dampers to an already starved duct system. Adding dampers to undersized duct just makes the problem quieter by restricting flow everywhere equally, but doesn't solve the comfort complaint. In my 8 years serving McKinney, upstairs comfort complaints in two-stories are 70% ductwork problems and 30% equipment problems.
Every McKinney ductwork job closes with before-and-after static pressure measurements at the air handler — I show you the numbers so you can see what the blower was fighting and prove the improvement. Healthy residential total external static pressure runs under 0.5 inches water column; most McKinney homes I first visit measure 0.8–1.2 iwc, which is why blower motors die at year 12 instead of 18. Sealing is $350 ($297.50 Frosty Club members), run replacement is $700/run ($595 members), plenum replacement $1,200–$1,500 ($1,020–$1,275 members). We don't do standalone duct insulation as a band-aid — if the core material is deteriorated, it needs replacement with R-8 insulated flex strapped at 4-foot intervals per code. I'm Omar Jacobo, TACLA126718E-licensed, EPA 608 Universal (#2396328), 143 Google reviews at 4.9 stars. Se Habla Español. Call (469) 254-0548.
Neighborhoods we serve in McKinney: Stonebridge Ranch, Craig Ranch, Trinity Falls, Tucker Hill, Eldorado Pkwy corridor
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.
Texas HVAC Contractor License held by Mariafernanda Jacobo. Issued and regulated by the Texas Department of Licensing and Regulation.
Per the U.S. EPA, leaky ducts are a primary contributor to poor indoor air quality. We measure, document, and fix.
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.
Frosty's covers every residential HVAC need in McKinney, TX — one phone line, one flat-rate pricing book, one licensed (TACLA126718E) family-owned team.
Same flat-rate ductworkpricing across every city we cover. If you're in a McKinney-adjacent neighborhood, these pages have local details for your ZIP.
Deeper context on ductwork written by Omar Jacobo (EPA 608 #2396328).
Red flags pointing to full replacement: visible tears or crush marks in the attic, inner liner separated from the outer vapor barrier, musty odor at registers, climbing summer electricity bills despite Oncor rates staying flat, and stubborn hot or cold rooms. For 1990s Stonebridge Ranch original flex, full replacement ($700/run, $595 Frosty Club members) typically makes financial sense. For newer Craig Ranch or Trinity Falls duct with intact core but failed joints, sealing ($350 / $297.50) solves it durably. We inspect first and tell you honestly: seal-worthy, replacement-required, or borderline.
Flat-rate pricing: sealing $350 ($297.50 members), individual run replacement $700 ($595 members), plenum replacement $1,200–$1,500 ($1,020–$1,275 members). Most McKinney two-stories carry 10–18 supply runs plus returns — full-home duct replacement typically runs $6,500–$12,000 depending on run length and attic accessibility. Quoted flat-rate upfront with before-and-after static pressure readings included to prove the work. Frosty Club Premium ($300/yr) saves 15% on the entire job plus gives you a $500 repair credit.
Sometimes — it depends on the core material condition. If the flex liner is intact and the leaks live at takeoff joints and plenum connections, mastic-and-mesh sealing ($350) is durable and holds 15+ years. If the inner liner has delaminated from the outer vapor barrier — common on 30-year-old flex in Stonebridge Ranch and Eldorado Pkwy — sealing is a band-aid. We cut a small inspection opening in the attic and show you the actual material condition before recommending either path. According to Energy.gov, sealing duct leaks is one of the highest-ROI home energy improvements available.
Almost always undersized upstairs supply duct. The run travels too far through superheated attic space, the diameter is too narrow for the required CFM, or the return grille is on the wrong wall. A Manual D sizing calculation identifies exactly which runs are starved. The fix is adding a supply run or upsizing the return — not adding more zoning dampers to an already restricted system. Energy.gov estimates typical residential duct systems lose 20–30% of conditioned air to leaks and thermal loss before it reaches a register. In Craig Ranch 3,500+ sqft homes with 30-foot attic runs, that percentage can be even higher.
Not as a standalone product. If the duct needs insulation attention, the core material is typically deteriorated enough to warrant full replacement — wrapping torn flex with additional insulation is a band-aid that doesn't address airflow loss through tears and delamination. We install R-8 insulated flex (or R-6 rigid metal where the layout requires it) on every replacement run, strapped at 4-foot intervals per International Mechanical Code standards. The insulation is built into the replacement material — not added as an afterthought.
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 Stonebridge Ranch and Craig Ranch 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.
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 Stonebridge Ranch and Craig Ranch 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.
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
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