Delray Beach Duct Services: HVAC Replacement Costs

Estimated Read Time: 12 minutes

If you are pricing a project and want a straight answer on air duct replacement cost, you are in the right place. This guide explains typical pricing in South Florida, what drives costs up or down, and how to avoid extras. You will see how we estimate, where we save you money, and when repair beats replacement. We also share local details that matter in humid attics from West Palm Beach to Fort Lauderdale.

What Drives Air Duct Replacement Cost

Most homeowners ask for one number. The truth is your price depends on size, layout, material, and access. We look at the whole system, not just the ducts. That is how we prevent hot rooms and wasted energy.

Key drivers include:

1. Home size and tonnage
2. • Larger systems need more trunk and run length. More materials and labor.
2. Layout and access
3. • Tight attics, low truss bays, and condo chases increase time.
3. Material type
4. • R6 vs R8 flex, metal trunk, or ductboard. Each has a different price and performance.
4. Design changes
5. • Moving supplies, adding returns, or resizing for airflow has cost but pays back in comfort.
5. Code and permitting requirements
6. • City rules and inspections can add time and fees.
6. Add-ons
7. • Sealing, sanitizing, deodorizing, and in-duct purification systems affect the final price.

In South Florida, many homes use a metal trunk with flex runs in hot, humid attics. Poorly sealed connections can sweat and grow odors. Replacing without sealing is a short-term fix that costs more later. We address leaks, insulation, and airflow together.

Average Duct Replacement Pricing in South Florida

Every home is unique, but ranges help planning. Here is what we see most often across West Palm Beach, Boca Raton, Coral Springs, and Fort Lauderdale.

• Small home or condo, limited runs in easy access: lower range pricing.
• Typical single-story home, 3 to 5 tons, trunk plus 8 to 12 runs: mid range.
• Larger custom layout, two systems, design changes and returns: higher range.

What pushes a project toward the higher end:

• Low attic clearance that slows removal and install
• Heavier insulation upgrade, like R8 throughout
• Major redesign to fix long duct runs or hot rooms
• Multiple returns and new filter rack work
• Commercial projects that run after hours

What keeps pricing lean:

• Good access and clear pathways
• Reusing sound metal trunk with new sealed flex runs
• Minimal design changes and no chase rebuilds
• Bundling sealing, deodorizing, and sanitizing during install

We price projects after a thorough inspection. ECM offers a free in-home estimate and a free 99-point A/C system engineering assessment for system and duct performance. That prevents surprise adders.

Signs You Need Duct Replacement vs Repair

You do not always need full replacement. Many issues come from leaks or poor design. Start with a careful check.

Choose repair or sealing when:

• You have a few loose connections or crushed flex
• Airflow balance is off but ducts are in good shape
• Odors respond to deodorizing and sanitizing

Consider replacement when:

• Ductboard or flex is torn, moldy, or poorly insulated
• Supply sizing is wrong across several rooms
• Metal trunk has corrosion or persistent sweating
• The system is noisy due to undersized returns

Our Watt Saver maintenance plan includes “Ducts Sprayed with Deodorizer” and “Inspect Air Ductwork Condition,” which helps catch issues early. Many homes save more with sealing and tuned modifications than with a full tear out.

Cost Breakdown: Materials, Labor, and Add-ons

Material choices affect price and performance.

Materials:

• Flex duct R6 or R8: R8 costs more but reduces heat gain in hot attics
• Metal trunk and takeoffs: durable and ideal for balance
• Ductboard plenums: insulated and efficient when sealed right

Labor:

• Removal and disposal of old ducts
• Fabrication of trunk or plenums
• Hanging, strapping, sealing, and insulating connections
• Balancing and testing airflow to every room

Essential add-ons that protect the investment:

• Professional sealing: Cuts leakage and energy loss. Often the best ROI.
• Sanitizing and deodorizing: Controls odors after old duct removal.
• In-duct purifier install: HALO-LED is mercury free and zero ozone compliant, with a seven-year limited warranty.

We also remind customers of contract language. Standard service contracts often exclude ductwork from coverage. ECM’s posted terms list ductwork as not covered. That keeps expectations clear.

How ECM Estimates and Controls Your Cost

We take a technician-first approach. ECM does not use salespeople. An experienced tech inspects the attic, measures runs, and checks static pressure. We confirm design against your home load and your comfort goals.

Our process to control cost:

1. Engineering assessment
2. • Free 99-point A/C system engineering assessment available. We assess leakage, sizing, and return paths.
2. Upfront scope
3. • You see which ducts get replaced, which are sealed, and which vents move.
3. Price clarity
4. • One written proposal. No vague allowances.
4. Bundled value
5. • We can include duct sanitizing and deodorizing during install for better results.
5. Post-install verification
6. • We balance airflow and review results in each room before we leave.

We also look for design wins. A second return near the primary bedroom can reduce noise and improve sleep. Shortening a long supply run can cool a west-facing room faster in afternoon heat.

Save Money: Sealing, Design Optimization, and Maintenance

The cheapest duct is the one you do not have to replace. Sealing and design tweaks often deliver big comfort gains for a lower cost.

Money-saving tactics:

1. Seal first
2. • Many South Florida homes lose 20 to 30 percent of conditioned air through leaks. Sealing pays back fast.
2. Right-size runs
3. • Fixing a starved return can drop static pressure and improve efficiency.
3. Insulate wisely
4. • R8 in hot attics reduces heat gain and sweating. It often solves odor complaints too.
4. Maintain regularly
5. • ECM’s 29-point A/C Tune-Up includes “Ductwork Sanitizing with Disinfectant” and a deodorizer spray. It keeps ducts fresh and limits microbial growth.
5. Add purification when needed
6. • The HALO-LED can reduce airborne and surface microbials, smoke, odors, and VOCs.

Our Watt Saver maintenance agreement is shown at “Only $239 per year” and includes two 29-point tune-ups, priority service, and duct checks. Staying ahead of problems protects the duct investment.

The Installation Process and Timeline

Homeowners want a clean, fast job. Here is the typical flow for a single system home.

• Day 1 inspection and final measurements
• Permitting and materials ordered
• Removal of old ducts and cleanup
• Fabrication and installation of trunk, plenums, and runs
• Sealing, strapping, and insulation check
• Airflow balancing and deodorizing or sanitizing
• Final walkthrough and instruction on filter changes

Most single-system homes complete in one day once we start work. Complex layouts or tight access can add time. We protect floors and furniture and remove debris. South Florida attics can reach extreme heat. Our teams stage work to limit time with the attic hatch open.

Permits, Code, and Warranties in Florida

Many cities require a permit for significant duct replacement or relocation. Inspections confirm support, sealing, and insulation. We handle the permit and schedule the inspection. This avoids rework and fines.

What we watch for in South Florida:

• Proper strapping and support at each turn and branch
• Insulation thickness that meets local code
• Sealed takeoffs and boots to limit attic air intrusion
• Return sizing that keeps static pressure in range

Warranties:

• Manufacturer warranties for installed products such as HALO-LED have a seven-year limited term
• ECM backs craftsmanship with a 100% Satisfaction Guarantee

We document your install and keep records for future service. That helps resale and maintenance.

Financing, Insurance, and What Contracts Do Not Cover

We help you compare options and protect your budget.

• Financing
• • Spread cost over monthly payments. Ask about current plans.
• Insurance
• • If ducts failed due to a covered peril, your carrier may assist. We can provide documentation.
• Contracts
• • Many service contracts exclude ductwork. ECM’s published terms list “NOT COVERED: … ductwork ….” We will review this with you before you buy.

Clarity prevents frustration. You will know what is covered, what is not, and why.

Why Homeowners Choose ECM for Duct Projects

• Local scale and speed since 1985. 200+ employees and 127 trucks.
• Technician led. No commissioned salespeople.
• Full suite of duct services: sealing, sanitizing, deodorizing, design, and in-duct purification.
• Use of EPA-registered hospital disinfectant during sanitizing. Our Breathe Green service cites 99.999 percent kill claims against a wide list of bacteria and viruses.
• Highly tuned duct work modification for optimum airflow and efficiency.
• Free 99-point A/C system engineering assessment to inform design and cost.

We design for comfort room by room, then build to that target. That is how you get the value you paid for.

Special Offers for South Florida Homeowners

• AC Maintenance with free duct sanitizing. Schedule a 29-point A/C Tune-Up and receive ductwork sanitizing at no extra charge. Call (561) 473-9463.
• Free 99-point A/C system engineering assessment to evaluate system performance and ductwork. Call (561) 473-9463 or request online at https://ecmservice.com/.
• Free quote for HALO-LED whole-home in-duct air purifier installation. Ask for current pricing when you schedule your estimate.

What Homeowners Are Saying

"Excellent Service for duct cleaning. Knowledgeable and friendly tech who explained everything g he was doing and was very efficient."
–Randy C., Duct Cleaning

"Kadeem came today to seal the new ductwork. He was both pleasant and professional. The whole new a/c process from initial quote to finish was efficient."
–Leslie L., Ductwork

"Thank you for assigning Kadeem to service my home today. Kadeem arrived within the given window of time and he worked tirelessly for about 6 hours and did an overall exceptional job. ... Kadeem did an outstanding job in inspecting, cleaning and sanitizing all of my air ducts and the air duct covers. He also inspected and cleaned my compressor and air handler. Finally, Kadeem did a superb job in covering up/ protecting my personal items and cleaning up all the the debris & putting my furniture back. He left my home the way it was before he arrived, that meant a lot to me."
–Sylvia G., Duct Cleaning

"Dwight was very helpful with my issues. I would recommend him to anyone that needs duct work."
–Teniera B., Ductwork

Frequently Asked Questions

How much does air duct replacement cost in South Florida?

Costs vary by size, access, materials, and design changes. Small condos can be at the low end. Typical single-story homes land mid range. Larger custom homes run higher. A free in-home estimate gives a precise number.

Is it cheaper to repair or replace ducts?

Repair wins if ducts are sound and only leak at joints. Replace when insulation is failing, runs are crushed, or sizing is wrong across many rooms. We inspect before we recommend.

How long does duct replacement take?

Most single-system homes finish in one workday once on site. Tight attics, complex layouts, or major redesigns can take longer. We review the schedule at your estimate.

Do I need a permit for duct replacement?

Many cities require a permit for significant duct changes. We handle permits and inspections. This prevents rework and ensures code compliance.

Will new ducts improve my cooling bills?

Yes if we seal leaks, right-size returns, and insulate to R8 where needed. Lower static pressure and less heat gain improve efficiency and comfort.

Conclusion

Air duct replacement cost depends on size, access, design, and add-ons. The right contractor diagnoses first, then builds a system that cools every room. ECM combines design, sealing, and sanitizing to deliver lasting comfort.

If you are comparing air duct replacement cost in West Palm Beach, Fort Lauderdale, or nearby, start with a free estimate. We will show you options and a clear price.

Ready to Price Your Duct Project?

• Call ECM Air Conditioning at (561) 473-9463
• Schedule online at https://ecmservice.com/
• Ask about AC Maintenance with free duct sanitizing and the free 99-point A/C system engineering assessment

Get a clear, written proposal and a comfort-first design. Book today and take control of your home’s airflow and energy use.

About ECM Air Conditioning

Since 1985, ECM Air Conditioning has served South Florida with 200+ employees and 127 trucks. We are technician led, not salesperson driven. We back work with a 100% Satisfaction Guarantee and hold licenses CAC-1822777, CFC-048260, and EC-0001843. Our team designs, seals, and optimizes duct systems for comfort and efficiency. Residential and commercial. Same-day options available.