Duct Sealing Services in Loganville & Greater Atlanta, GA

Many homeowners don't realize their HVAC system is leaking. Leaky ductwork can waste 20-30% of your cooled or heated air before it reaches your rooms—like having holes in your home's insulation. This wastes energy, increases costs, and reduces comfort.

Henson Mechanical inspects and repairs ductwork throughout Georgia, sealing leaks and optimizing airflow for maximum HVAC efficiency.

Why Ductwork Leaks Happen:

Ducts are typically installed in attics, crawlspaces, or walls—areas where they're subject to:

• Temperature extremes: Summer attic heat (140°F+) and winter cold stress seals and connections
• Movement & settling: Home settling creates stress on ducts
• Poor original installation: Improper sealing or fastening during initial installation
• Age & wear: 20+ year old ducts naturally deteriorate
• Rodent/pest damage: Rats and insects damage duct seams and insulation
• Vibration: HVAC operation vibrates connections loose over time

Signs of Leaky Ducts:

• High energy bills: Despite not using AC/heating more, bills increase gradually
• Uneven cooling/heating: Some rooms cool/heat poorly while others are comfortable
• Weak airflow: Vents feel like they're not pushing much air
• Dusty rooms: Debris accumulates faster, indicating system is pulling air from dusty areas (attics, crawlspaces)
• Visible dust around ducts: If you can see ducts (in attics, crawlspaces), visible dust or debris around seams indicates leaks
• Moisture in attic/crawlspace: Leaking ducts in these areas can add humidity
• Outdoor air entering home: You feel drafts from basement, attic, or crawlspace areas near ducts

How We Seal Ductwork:

1. Professional Inspection: We inspect accessible ducts visually and use diagnostic equipment (pressure tests) to identify leak locations.
2. Ductwork Assessment: We evaluate whether ducts are properly sized, insulated, and connected.
3. Sealing Method Selection:
   • Mastic Sealant: For small leaks and connection points, we apply flexible duct sealant (better than duct tape!)
   • Metal Closure Tape: For larger gaps, we use specialized HVAC tape
   • Aeroseal (Advanced): For distributed leaks throughout ductwork, we use pressurized sealant that distributes through ducts, sealing leaks from inside
4. Insulation Upgrade: If ducts are uninsulated (especially in attics), we add fiberglass or spray-foam insulation to prevent heat loss/gain
5. Testing: We retest the system to verify leaks are sealed and airflow is optimized

Why Proper Duct Sealing Matters:

A 20% ductwork leak means:

• You're paying 20% more to heat/cool your home
• Some rooms won't cool or heat adequately
• Your HVAC system works harder, reducing lifespan
• Dustier indoor air quality

Sealing ducts typically improves HVAC efficiency 15-20%, saving $20-$40/month on energy costs. Duct sealing pays for itself in 1-2 years.

Aeroseal Technology:

For extensive ductwork leaks, Aeroseal is a game-changer:

• A pressurized sealant is distributed through the ductwork
• The sealant finds and seals leaks from inside the ducts
• No access required to hidden ducts in walls or attics
• Seals both large and small leaks simultaneously
• Non-toxic, environmentally safe sealant
• Results verified with pressure testing

Aeroseal costs $800-$1,500 but can seal ducts that would otherwise require expensive ductwork replacement.

Ductwork Replacement:

If ducts are severely damaged, corroded, or poorly sized, replacement may be necessary:

• Old metal ducts (pre-1980s) may be corroded
• Flex duct damaged by rodents or age
• Poorly designed ducts causing airflow problems
• Insufficient duct insulation in attics/crawlspaces

Replacement costs vary widely depending on ductwork complexity, but typically ranges $3,000-$8,000. However, it's not usually necessary—sealing existing ducts is often sufficient.

Duct Cleaning + Sealing Combo:

For maximum results, combine duct cleaning (removes dust and debris) with duct sealing (prevents new infiltration). This provides comprehensive ductwork optimization.