Florence, TX HVAC Duct Services: Replacement Costs

Estimated Read Time: 12 minutes

Wondering what an air duct replacement cost looks like in the Austin area? You are not alone. Homeowners call us daily with hot rooms, dust, and high bills. This guide breaks down pricing, what drives it, and where you can save without cutting corners. If your system only needs cleaning, sealing, or targeted repairs, we will show that path too. Keep reading for clear numbers, timelines, and pro tips from a local team that has served Central Texas since 1984.

What Drives Air Duct Replacement Cost in Austin

Air duct replacement cost depends on four big levers: home size, access, material, and scope. Your square footage and number of supply registers set the baseline. Attic or crawlspace access and the condition of the old ducts influence labor hours. Materials like flex, sheet metal, or duct board carry different price points. Finally, scope matters. Are we replacing a few crushed runs or the entire trunk and branches with new plenums and balancing dampers?

Central Texas homes often run ducts through hot attics. Austin summer attic temperatures can exceed 120°F. Heat, rodents, and age degrade flex insulation and connections. That is why we evaluate the full system, not just the most obvious kink or tear. Our retrofit specialists inspect existing ducts, identify problem areas, and implement targeted repairs or modifications when replacement is not required. Proper duct sealing alone can produce noticeable improvements in both comfort and energy bills.

Budget for permits if your municipality requires them, plus sealing, mastic, hangers, and new boots as needed. A like-for-like swap is different from a corrected design that right-sizes duct diameters and repositions registers for better airflow.

Average Air Duct Replacement Prices by Home Size

Every home is unique, but these Austin-area ranges can help you plan. They include removal of failed flex, new supply runs, sealing, and basic balancing. Complex design changes, tight crawlspaces, or significant plenum work can add cost.

1. Small homes or condos, 800 to 1,200 sq ft: $3,000 to $5,500
2. Mid-size homes, 1,300 to 2,000 sq ft: $4,500 to $8,500
3. Larger homes, 2,100 to 3,000 sq ft: $7,500 to $12,500
4. Very large or multi-system homes, 3,000+ sq ft: $10,000 to $18,000+

Expect higher pricing when ducts are buried under blown-in insulation or when attic platforms and catwalks are needed. If your system includes zoning, motorized dampers, or a new plenum box, add a contingency. On the other hand, homes with straightforward attic access and short runs near the air handler land near the lower end. We always confirm the scope after a thorough inspection and airflow calculation so you do not pay for guesswork.

Material Options: Flex, Sheet Metal, and Duct Board

Duct materials influence both price and performance. Here is how we guide homeowners in Austin, Round Rock, and Pflugerville.

1. Insulated Flex Duct

   • Most common for supply branches.
   • Fast to install and cost effective.
   • Works best with smooth radius turns, proper support, and sealed connections.

2. Sheet Metal with External Insulation

   • Durable, smooth interior, excellent airflow when sized correctly.
   • Higher labor cost due to fabrication and insulation wrap.
   • Good for trunks and longer straight runs.

3. Duct Board

   • Fiberglass board formed into rectangular ducts.
   • Moderate cost and thermal performance.
   • Requires precise fabrication and sealing on all seams.

Regardless of material, sealing is nonnegotiable. Leaky ducts waste energy, pull attic dust into your home, and starve rooms of air. During tune-ups, we include checking airflow and duct connections. Many issues we find are simple connection or sealing failures that do not warrant full replacement.

Labor, Access, and Code Factors That Change Pricing

Labor is the largest line item in most replacements. Time increases when techs must crawl through low-clearance trusses or navigate tight returns. Removing old ducts from under layers of insulation takes care and containment to avoid spreading dust. We protect living spaces, bag-out debris, and rebuild supports where hangers have failed.

Austin-area code requirements and best practices add materials but save energy and comfort. Proper supports every 4 feet for flex, radius elbows to avoid kinks, sealed boots to drywall, and insulated R-values appropriate for the attic all improve performance. If the existing trunk or plenum is undersized, a new trunk with correct takeoff sizes provides a step-change in comfort.

Expect a permit and inspection in many jurisdictions. Our licensed HVAC team handles documentation and ensures connections at the air handler and returns meet manufacturer and code requirements. That includes smoke detectors in return plenums where applicable and clearances for service. These details keep your home compliant and efficient.

Replacement vs Repair vs Cleaning: How to Decide

Not every duct problem needs a full replacement. In fact, many homeowners see big wins from targeted fixes.

Choose cleaning when:

• You have dust or debris in supply lines but the duct structure is sound.
• You recently completed a remodel and registers collected drywall dust.
• You want a baseline before sealing or balancing.

Choose sealing and targeted repairs when:

• Flex is intact but connections leak at boots or plenums.
• A few runs are crushed or kinked and can be replaced one by one.
• Rooms are uneven because of sizing or damper settings.

Choose replacement when:

• Flex insulation is degraded throughout the system.
• Trunk sizing is wrong and rooms will never balance without rework.
• Rodent or moisture damage is widespread.

Our team performs a full inspection and airflow assessment before recommending replacement. We document findings with photos and explain options at your kitchen table. If sealing or cleaning solves the problem, we start there. We also offer a duct cleaning and sealing service under our HVAC portfolio. That keeps the decision rational, not rushed.

Signs You Need New Ductwork

If two or more of these show up, a new duct system may be the smart move.

• Hot or cold rooms that persist after multiple AC service calls
• Visible tears, crushed flex, or disconnected boots in the attic
• Dust streaks at registers that indicate leaks behind grilles
• High utility bills with no change in thermostat settings
• Musty or attic odors when the blower starts
• Excessive noise or whistling at certain registers
• A system older than 20 years with piecemeal repairs

During our assessment, we use static pressure readings, temperature split, and visual inspections to confirm. In many Austin homes, returns are undersized. Correcting return ducting and filter cabinets is often half the battle for quiet, efficient airflow.

How Professional Duct Replacement Works Step by Step

Here is a typical process you can expect with SALT Plumbing Air & Electric.

1. Home assessment and design

   • Count registers, measure room loads, evaluate trunk routes.
   • Identify constraints like low trusses or bath fans that occupy pathways.

2. Proposal with options

   • Good, better, best materials and scope.
   • Clear inclusions, permits where needed, and timeline.

3. Preparation and protection

   • Floor and attic access protection.
   • Bagging and safe removal of old ducts to control dust.

4. Installation

   • New trunk or main runs, then branches sized to design.
   • Proper supports, smooth bends, sealed boots, and insulated connections.

5. Sealing and balancing

   • Mastic and tape approved for ducts, sealed plenums and joints.
   • Damper adjustments and airflow checks at each room.

6. Verification and handoff

   • Photos of key connections and before-and-after where applicable.
   • Walkthrough on filter changes, register use, and warranty details.

This step-by-step approach prevents common issues like room pressure problems and returns that starve the blower. Our same day response is available for assessments, and we schedule installs to minimize downtime.

Ways to Reduce Cost Without Sacrificing Quality

Smart homeowners in Georgetown, Cedar Park, and Hutto often ask how to lower cost while improving comfort. Here is what works.

• Start with inspection and sealing. Our retrofit specialists identify problem areas and implement targeted repairs or modifications. Many homes do not need full replacement.
• Combine services. If you need cleaning after a remodel, take advantage of active specials. Right now there is a duct cleaning service with free sanitization. Cleaning before sealing or replacement protects your investment.
• Choose value-engineered materials. Flex for branches with proper support and radius turns often beats overbuilt designs that do not improve comfort.
• Join SALT+. For $24.95 per month, you get routine maintenance, priority scheduling, and member-only discounts. Tune-ups include checking airflow and duct connections, which helps catch issues early.
• Plan for access. Clearing the attic walkway and storing fragile items protects your home and reduces surprises.

We also install damping and balancing at the time of work. This saves follow-up visits and makes your system easier to fine tune when Texas weather swings from humid to dry.

Transparent Pricing and Local Expertise You Can Trust

SALT Plumbing Air & Electric is family owned and serving Austin since 1984. We are fully licensed and trained, with HVAC, electrical, and plumbing expertise under one roof. Licenses: TACLB #117615E | TECL #26149 | LIC# M-44221. You get a single point of accountability for your home.

We operate across Austin, Round Rock, Georgetown, Cedar Park, Leander, Pflugerville, Kyle, Hutto, Del Valle, and Belton. Expect quick response times and same day service for assessments. Our proposals include line-item details, warranty terms, and pictures of areas that drive time and cost. If your home only needs cleaning or sealing, that is what we recommend. If replacement is right, we design for comfort first and back it with a satisfaction guarantee.

Timelines, Warranties, and Payment Options

Most full replacements take 1 to 2 days for average homes and 2 to 3 days for large or complex systems. We schedule around weather when attic work is involved. Your comfort matters, so we keep the home livable during the project and clean as we go.

Warranties cover workmanship and materials as specified in your proposal. We seal every joint and secure every hanger so your system performs season after season. Ask about member pricing through SALT+ for additional savings on repairs or future tune-ups.

Payment options include major cards and financing upon approval. We provide clear estimates up front. No surprises, just smart design and careful installation that deliver quieter rooms, better airflow, and lower bills.

Special Offer: Save on Duct Services

Special Offer: Save $250 on standard duct cleaning service with free sanitization. Use code from our Specials page before 2026-04-01. Expires in 30 days from issue and cannot be combined with other offers. Visit https://callsalt.com/specials/ or call (512) 559-4206 to claim your discount and schedule your visit.

What Homeowners Are Saying

"Michael Cookson did a great job! It was a big job, he was meticulous and thorough in his work to seal the ductwork and plenums. He showed me pictures of his work before and after, he let me ask questions about what he was doing as he went. ... Overall this company is enjoyable to work with. I highly recommend them."
–Amanda M., Duct Sealing

"I had Christian, Ben and Tryston from Salt help me out with my AC unit and duct clean up They were very professional and friendly and answered all my questions. Cleaned up before leaving as well. It was a great service. Thank you team Salt"
–Dhananjay P., Duct Cleaning

"Ross was a delight to have come and explain all of the jobs that SALT does. He cleaned out our dryer’s duct that was completely clogged! He fixed everything, cleaned everything, and put everything back together. I cannot say enough about the amazing work he did. We will definitely be back!"
–Donna T., Dryer Duct Cleaning

Frequently Asked Questions

How much does air duct replacement cost in Austin?

Most homes fall between $4,500 and $12,500 depending on size, access, material, and scope. Small condos can be lower. Large or complex homes can exceed $15,000.

Do I need full duct replacement or will sealing be enough?

If ducts are structurally sound, sealing and targeted repairs often solve comfort and efficiency issues. We inspect and recommend the most cost-effective option first.

How long does duct replacement take?

A typical project takes 1 to 2 days. Large homes or complex designs can take 2 to 3 days. We provide a clear timeline after inspection.

Will new ducts lower my energy bills?

Yes, when leaks and sizing errors are corrected. Proper sealing and balanced airflow reduce run time and improve comfort, which lowers energy waste.

Is duct cleaning worth it before or after replacement?

Cleaning is smart when ducts are dirty but serviceable. If replacing, we focus on clean installation and sealing. Use cleaning to maintain a healthy system over time.

Conclusion

Air duct replacement cost depends on design, access, material, and how much of the system needs to change. Many Austin homes benefit from sealing or targeted repairs before a full replacement. When replacement is right, a well designed duct system delivers quiet comfort and lower bills. If you are researching air duct replacement cost in Austin or nearby, request an inspection and an apples-to-apples quote from our licensed team today.

Ready to Fix Your Airflow and Comfort?

• Call now: (512) 559-4206
• Schedule online: https://callsalt.com/
• Active offer: $250 OFF standard duct cleaning service with free sanitization. Claim it at https://callsalt.com/specials/ before 2026-04-01.

Get a same day assessment in Austin, Round Rock, Georgetown, Cedar Park, Leander, Pflugerville, Kyle, Hutto, Del Valle, or Belton. We will confirm whether cleaning, sealing, targeted repairs, or full replacement is the smartest move for your home and budget.

SALT Plumbing Air & Electric has served Austin since 1984 with licensed, highly trained techs and same day service. We handle HVAC duct cleaning, sealing, inspections, and targeted repairs, plus full replacements when needed. Our SALT+ Membership delivers priority scheduling, exclusive discounts, and routine maintenance for only $24.95 per month. We are local, family owned, and fully licensed: TACLB #117615E | TECL #26149 | LIC# M-44221. Expect clear pricing, respectful service, and work backed by a satisfaction guarantee throughout Austin, Round Rock, Georgetown, Cedar Park, Leander, Pflugerville, Kyle, Hutto, Del Valle, and Belton.