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Purix crew cleaning a dryer vent duct beside the service van

Air Duct & AC Ductwork Services

AC Duct Replacement in Miami, FL

When ductwork is damaged beyond cleaning, we replace the sections that need it, or the whole system.

  • Air duct & HVAC specialists
  • Residential & commercial
  • Upfront quotes
Call (305) 449-9881 Book an Inspection
5.0 4 reviews on Google · Open 24 hours Sun–Fri

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Tell us about your AC system or vent and we’ll get back to you to schedule.

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  • 5.0

    Google rating

  • 24 h

    Open Sunday–Friday

  • 17

    Specialized services

  • 17

    Cities served

Purix technician reviewing ductwork plans on site

AC Duct Replacement

When cleaning isn’t enough

Ductwork doesn’t last forever. In South Florida attics and ceilings, flex duct can be crushed during other work, pulled loose from its connections, or have its insulation break down from heat and humidity. Damaged ducts can leak cooled air into the attic, sweat and drip onto ceilings, or leave rooms with little airflow.

Purix replaces damaged AC ductwork, whether that’s one torn run or an entire system. If you’re not sure whether you need replacement or just cleaning, start with an air duct inspection.

Call Now: (305) 449-9881 Request a free quote

What’s included

What we replace

01

Flex duct runs

Crushed, torn, kinked or deteriorated flexible duct between the plenum and each room.

02

Connections & collars

Loose or failed connections at the plenum, takeoffs and registers.

03

Register boots

The fittings where duct meets the ceiling, wall or floor register.

04

Duct insulation

Insulated duct where the jacket or insulation has broken down and is sweating.

05

Supports & straps

Proper support so new runs don’t sag or kink.

Warning signs

Signs your ductwork may need replacing

  • Torn, crushed or collapsed duct visible in the attic or ceiling
  • A room that gets almost no air, which can mean a disconnected run
  • Water stains or dripping near ceiling vents from sweating ducts
  • Duct insulation that is falling apart or missing
  • Ductwork that was damaged by water or a roof leak
  • An older duct system with repeated problems

The benefits

What new ductwork can do

Air reaches the rooms

Sealed, connected ducts deliver cooled air to the rooms instead of the attic.

Less sweating

Properly insulated duct reduces condensation and ceiling drips.

Fewer weak rooms

Replacing crushed or disconnected runs restores airflow to affected rooms.

A clean start

New ductwork starts clean, with no years of buildup inside.

Our process

How duct replacement works

  1. 01

    Inspect & measure

    We inspect the existing ductwork and measure the runs that need replacing.

  2. 02

    Written quote

    You get a clear recommendation for partial or full replacement and a written quote.

  3. 03

    Remove old duct

    Damaged sections are removed and hauled away.

  4. 04

    Install & seal

    New duct is installed, connected, sealed and properly supported.

  5. 05

    Test airflow

    We check airflow at each register and walk you through the finished work.

Keep exploring

Related services

Google reviews

What Our Customers Say on Google

Google Rating

5.0

Based on 4 reviews
Review us on Google
  • T

    Tanisha Ebanks

    Local Guide · 16 reviews

    Posted on Google
    October 2026
    Had a wonderful experience with Zack. He was knowledgeable and pleasant. He explained everything to us and was able to clean and sanitize our system. We will definitely be recommending and using this company in the future.

    Services: HVAC system maintenance

    Response from the owner

    Tanisha Wow, thank you for such an awesome review! We’re so glad Zack and Mike could turn a stressful next day into a smooth, hassle-free experience. Honesty and fast service are top priorities for us, so hearing your feedback means the world to our team. Thanks for choosing Purix Air Duct & Dryer Vent Cleaning Team!

  • M

    Mark olive

    4 reviews

    Posted on Google
    October 2026
    We had Mike as our mold buildup technician today, and he was informed and professional. We decided on Deep cleaning sanitation, and UV light therapy as a more permanent solution, and the fee was Great! . Happy with the work and would suggest it.Thnk you Purix Team

    Services: HVAC duct & vent cleaning

    Response from the owner

    Hello Mr Olive ,Thank you for taking the time to write this. We're glad Mike was able to help you out quickly and that King kept things smooth on the communication end. That kind of straightforward service is what we aim for every time.Purix Air Duct & Dryer vent cleaning Team :) .

  • E

    Edgardo Flores

    Posted on Google
    October 2026
    They did a great job! Amazing both of them Thank you!!

    Services: HVAC duct & vent repair, HVAC duct & vent cleaning

  • C

    ccabral725

    Local Guide · 24 reviews

    Posted on Google
    October 2026
    Very good service
    Response from the owner

    Hi ccabra, thanks for the review. We're glad Purix Air Duct & Dryer Vent Cleaning could help you out. That's the kind of service we aim for every time, and we appreciate you choosing us.

Read all reviews on Google

FAQs

AC Duct Replacement FAQs

Straight answers about how we work. Don’t see your question? Give us a call.

Still have questions?

Talk to our team. Open 24 hours Sunday through Friday.

(305) 449-9881

Should I repair or replace my ductwork?

If the damage is limited to one or two runs, replacing just those sections is often enough. If problems are widespread or the system is old and deteriorating, full replacement can make more sense. We’ll explain both options.

How long does duct replacement take?

Replacing a few runs can often be done in a day. Full-system replacement takes longer, depending on the size of the home and access to the ductwork.

Will new ducts lower my energy bill?

Sealed, properly connected ducts deliver more of your system’s air where it’s needed. Actual savings depend on your system, your home and how much leakage there was before.

Can you replace just one section?

Yes. We often replace individual crushed or disconnected runs without touching the rest of the system.

All services

Explore Our Air Duct & HVAC Services

Our main focus is your air conditioning system: the ductwork that carries the air and the equipment that cools it. Dryer vent and attic insulation services are available too.

Purix technician connecting a cleaning hose to a ceiling supply vent

01 · 6 services

Air Duct & AC Ductwork Services

Cleaning, inspection, sanitizing and replacement for the supply and return ducts that carry your conditioned air.

Technician cleaning an evaporator coil inside an open air handler

02 · 5 services

HVAC & Mold Cleaning Services

Cleaning for the components inside your AC system, including coils, air handlers and blower wheels, plus help with musty odors and suspected microbial buildup.

Purix technician cleaning a dryer vent connection in a laundry area

03 · 3 services

Dryer Vent Services

Lint removal, new vent installation and commercial dryer vent cleaning.

Technician blowing new insulation between attic joists

04 · 3 services

Attic Insulation Services

Old insulation removal, blown-in insulation and full attic insulation replacement.

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Service areas

AC Duct Replacement Service Areas

Based in Miami, Purix serves homes and businesses across Miami-Dade and Broward, with service extending to Palm Beach, Collier and Lee counties.

Purix Air Duct & Dryer Vent Cleaning 5.0 on Google · Directions

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Call (305) 449-9881
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Schedule AC Duct Replacement in Miami

Call (305) 449-9881 to schedule an inspection or get a quote. Open 24 hours Sunday through Friday.

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