Frosty's HVAC
4.9 stars · 94 Google reviews

Ductwork Services in Southlake, TX

Leaky ducts waste 20-30% of your cooling and heating. Flat-rate residential duct sealing, repair, and replacement in Southlake. Static pressure diagnostic $85 (waived with repair). Licensed TACLA126718E, EPA 608 Universal certified, family-owned since 2018.

Licensed TACLA126718E
EPA 608 Universal Certified
Family-Owned Since 2018
94 Reviews · 4.9 Stars

How Much Does Ductwork Cost in Southlake?

Ductwork in Southlakestarts 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.

ServiceRegular PriceFrosty 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 Club

What Are the Most Common Ductwork Problems in Southlake?

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 Southlake 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 SouthlakeHomeowners Trust Frosty's for Ductwork

Southlake ductwork problems are different from what we see in older DFW neighborhoods. The 1990s-2010s housing stock in Carillon, Timarron, and Shady Oaks has insulated flex and rigid trunk lines that were installed to current code, so we don't typically see the catastrophic 30%+ leakage rates I find in 1970s-80s homes. What we DO find in Southlake is undersized upstairs ductwork on 2-story homes, crushed flex runs in finished attics, return drops that are too small for the air handler's CFM, and damper-and-zoning configurations that were designed by the lowest bidder. Static pressure on most Southlake systems we first visit runs 0.7-1.0 inches of water column — too high. Healthy is under 0.5. That extra pressure burns out blower motors years early.

The most common Southlake ductwork call is the 2-story upstairs comfort problem — master suite over the garage stays 76°F while downstairs sits at 72°F. People assume it's an AC capacity issue and call for a bigger system; it's almost never that. It's an airflow problem caused by undersized upstairs supply runs, an undersized return on the upstairs zone, or a zoning damper that's been working against the duct design for years. We size duct runs using Manual D (the ACCA standard) and often have to add a supply run or upsize a return on the upstairs zone to balance the system. No amount of zoning logic will fix a fundamentally undersized duct.

Every ductwork job in Southlake includes a before-and-after static pressure reading per system — we measure what your blower is fighting against before we start and prove the improvement after we're done. Duct sealing is $350 flat ($297.50 for members), duct replacement is $700 per run ($595 for members), plenum replacement is $1,200-$1,500. Most Southlake homes have 12-20 supply runs across multiple zones, so a full multi-system duct replacement can run $8,000-$15,000 — but we usually don't need to replace everything, just the problem runs and the trunk transitions. Honest scope, flat-rate price.

Neighborhoods we serve in Southlake: Southlake Town Square, Carillon, Timarron, Shady Oaks

Why Our Credentials Matter for Ductwork

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.

Ductwork FAQ for Southlake, TX

How do I know if my ducts need replacing in Southlake?

Signs: rooms that never cool or heat evenly (especially upstairs), high summer or winter bills relative to home size, visible dust at supply registers, musty smells when the system runs, or visibly crushed/torn flex runs in the attic. For most Southlake 1990s-2010s homes, you'll need targeted run replacement and rebalancing rather than a full re-duct. We diagnose first.

How much does duct replacement cost in Southlake?

Duct sealing $350 flat ($297.50 for members), duct replacement $700 per run ($595 for members), plenum replacement $1,200-$1,500. Most Southlake homes have 12-20 supply runs across multiple zones, so a targeted fix typically lands at $2,000-$5,000 and a full multi-system replacement at $8,000-$15,000. We quote flat-rate before starting and include static pressure readings.

Can you seal my existing ductwork in Southlake 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 itself is torn, crushed, or the inner liner has separated from the outer vapor barrier, sealing won't fix it. Most Southlake homes need a mix — seal the trunk transitions, replace the worst flex runs. We inspect first and give you the honest scope.

Why is my upstairs always hotter than my downstairs in my Carillon or Timarron 2-story home?

In 2-story Southlake homes, the most common cause is undersized upstairs supply ductwork — the runs 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 on the upstairs zone. Adding more zoning logic on top of bad ducts won't fix it.

Do you insulate ductwork in Southlake?

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 replacement job.

Ready to Fix Your Southlake Ductwork?

Call or request service online. 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.

OJ

Written by

Omar Jacobo

EPA 608 Certified Technician (#2396328) | Co-Owner, Frosty's HVAC LLC

Omar has been serving local homeowners since 2018. Learn more

// Ready When You Are

Ready For Reliable HVAC Service?

Request service online, call for same-day help, or see your replacement price.

Call NowBookText Us