Expert HVAC Ductwork Repair, Replacement, and Sealing Services
Your home’s duct system plays a vital role in delivering cooled and heated air efficiently throughout every room. When ducts develop leaks, become disconnected, or wear out, it can lead to uneven temperatures, increased energy bills, and reduced indoor air quality.
M&R Air Conditioning is a family-owned ductwork specialist proudly serving St. Petersburg and Pinellas County with honest, transparent service.
Why Homeowners Choose M&R for Ductwork Services
When your air ducts need attention, you want a company that treats your home like its own.
Your comfort is our mission—and that starts with treating you like family.
Here’s why homeowners throughout Pinellas County trust M&R for their ductwork needs:
Our Comprehensive Ductwork Services
Whether you’re dealing with aging HVAC ducts, restricted airflow, or rising energy costs, M&R provides the professional ductwork services your home needs.
HVAC Duct Repair
Many duct issues don’t require full replacement. We repair loose connections, small holes, damaged insulation, and minor leaks using mastic sealant and UL-181-rated foil tape. Common repairs include reconnecting ducts, sealing gaps, fixing insulation, addressing leaks at vents, and repairing crushed or kinked flex runs.
Replacing Fiberglass Duct
Fiberglass-lined ducts offer sound dampening and insulation, but can degrade in Florida’s humid climate, releasing particles and encouraging mold growth. We assess duct condition and recommend replacement when the lining deteriorates to improve energy efficiency and indoor air quality.
Replacing Metal Duct
Metal ducts—galvanized steel or aluminum—are durable but can develop separated joints, failed seals, or corrosion, especially in moist areas like garages. We replace metal ducts with properly sealed connections and insulation for unconditioned spaces, ensuring decades of reliable performance.
Duct Sealing
Even intact ducts often leak 20-30% of conditioned air through gaps and seams, causing higher energy bills and discomfort. We seal leaks professionally with mastic sealant, UL-181 tape, and aerosol sealing technology for hard-to-reach areas. This process reduces heating and cooling costs, creates more consistent temperatures throughout your home, improves indoor air quality by blocking contaminants, reduces strain on your HVAC system, and typically pays back within 1-4 years.
Duct Sealing
Even intact ducts often leak 20-30% of conditioned air through gaps and seams, causing higher energy bills and discomfort. We seal leaks professionally with mastic sealant, UL-181 tape, and aerosol sealing technology for hard-to-reach areas. This process reduces heating and cooling costs, creates more consistent temperatures throughout your home, improves indoor air quality by blocking contaminants, reduces strain on your HVAC system, and typically pays back within 1-4 years.
Replacing Flex Duct
Flexible ducts are common in Florida homes, particularly in attic spaces. Over time, flex duct can sag, kink, or disconnect, restricting airflow and forcing your AC system to work harder. We replace flex duct with proper support, secure connections, and adequate insulation to restore energy efficiency. Most experts recommend flex duct replacement every 15-25 years, or sooner if damaged by pests, moisture, or poor installation.
The M&R Ductwork Advantage
Investing in professional ductwork services delivers benefits you’ll notice every day:
Enhanced Comfort
When your duct system works properly, cooled air reaches every room as intended. No more hot spots, cold corners, or constant thermostat adjustments.
Improved Indoor Air Quality
Leaky ducts can pull in dust, insulation particles, mold spores, and other contaminants from your attic, walls, or crawl space. Properly sealed air ducts protect your family from these airborne pollutants.
Energy Efficiency
Sealed, well-maintained ducts mean your HVAC system operates efficiently without working overtime to compensate for leaks and restrictions. Homeowners often see energy savings of 15-20% after professional duct sealing.
HVAC System Longevity
When your ductwork system functions correctly, your air conditioning and heating equipment don’t have to work as hard. This reduces wear, extends equipment life, and helps you avoid costly repairs.
Long-Term Value
Quality ductwork services protect your home’s value and provide years of reliable performance. It’s an investment that pays dividends in comfort, efficiency, and peace of mind.
How to Schedule Your Ductwork Services
Getting started with M&R is simple:
STEP 01
Contact Us
Call our team or complete our online form to describe your concerns.
STEP 02
Schedule an Assessment
We’ll arrange a convenient time to evaluate your ductwork and discuss your options.
STEP 03
Get a Clear Recommendation
Our technician will explain exactly what your ducts need—whether that’s repair, sealing, or replacement—along with transparent pricing.
STEP 04
Professional Installation
Once you approve the work, our skilled team completes the job with attention to detail and respect for your home.
We respond quickly and work around your schedule.
Whether your ducts need a minor fix or complete replacement, we make the process easy.