Ductwork Replacement Service

• Severe, Widespread Corrosion or Mold: The metal ducts in your basement or crawlspace are flaking apart, or you have visible mold growth inside flexible ducts that can't be cleaned.
• Crushed, Sagging, or Poorly Installed Original Ducts: The existing system is a patchwork of undersized flex duct, kinked runs, and improper supports that severely restrict airflow.
• Major Renovation or System Overhaul: You're replacing a 25-year-old furnace and the original ducts are incompatible with modern, high-efficiency equipment that requires specific airflow.
• Persistent Problems Even After Repairs: You've sealed leaks before, but still suffer from high bills, dust, and uneven temperatures—a sign of a fundamentally flawed design.
• Asbestos Ductwork (Pre-1970s Homes): If your home has original ductwork lined with asbestos, replacement is the only safe option. Do not disturb it. We follow all safety and abatement protocols.
• Converting from Another System: Switching from radiators (boiler heat) or adding central air to a home that never had ducts requires a full, professional installation.

The 551 HVAC Total Replacement Process: Building a New Airway

We don't just rip and replace. We engineer a superior system.

• Comprehensive Home Assessment & Manual D Calculation: We perform a detailed Manual J load calculation for your home and a Manual D duct design. This ensures the new system is perfectly sized for both your house and your new HVAC equipment.
• Custom Design & Material Selection: We design a modern, efficient layout. We primarily use galvanized steel sheet metal for main trunks and critical branches (for durability, smooth interior airflow, and cleanliness), and specify high-quality, properly supported R-8 flex duct only for final branch runs where appropriate.
• Careful Removal & Preparation: We safely remove all old ductwork, seal off plenums, and prepare the space. We protect your home from dust and debris throughout the process.
• Precision Fabrication & Installation:
  1. Trunk lines are fabricated in our shop or on-site with Pittsburgh locks and S-cleats for strong, airtight seams.
  2. All ducts are installed with proper hangers and supports every 4-6 feet to prevent sagging and noise.
  3. We design an adequate return air system, which is often neglected. We ensure every bedroom has a return path (via jump ducts or dedicated returns) to balance pressure and improve airflow.
• Airtight Sealing & Insulation: Every single seam, joint, and connection is sealed with mastic paste—the industry gold standard. Ducts in unconditioned spaces (attic, crawlspace) are then wrapped with R-8 insulation.
• System Integration & Balancing: The new ducts are connected to your furnace/air handler. We then balance the entire system using calibrated dampers, measuring airflow at each register to deliver the designed CFM to every room.
• Final Testing & Walkthrough: We perform a duct blaster test to verify the new system's leakage is below 3% (exceeding industry standards). We then walk you through the new system's operation.

The Transformative Benefits of New Ductwork

Replacing your ducts is like getting a new circulatory system for your home:

• Dramatic Energy Savings: A sealed, properly sized system can improve overall HVAC efficiency by 20-40%, dramatically lowering your utility bills.
• Perfect Comfort Balance: Eliminate hot/cold spots forever. Every room receives the correct amount of conditioned air.
• Quieter Operation: Sturdy, well-supported sheet metal ducts are vastly quieter than old, rattling, or flapping flex duct.
• Superior Indoor Air Quality: New ducts have clean interiors. Combined with tight seals, they prevent dust, insulation, and allergens from being sucked into your airstream.
• Protects New HVAC Investment: Ensures your new furnace or air conditioner can perform at its rated efficiency and lifespan.

Replacement vs. Repair: Making the Smart Choice

We will always give you an honest recommendation:

• If repair costs are 50% or more of replacement cost, replacement is the smarter financial decision.
• If the existing design is the root cause of problems (e.g., no returns in bedrooms, trunk lines too small), repair cannot fix it. You need a redesign.

Invest in the Foundation of Your Home's Comfort

New ductwork is a behind-the-walls upgrade that pays dividends every single day in lower bills, better health, and consistent comfort. It's the definitive solution to chronic HVAC frustrations.