Complete Ductwork Installation

Studies consistently show that the average home loses 20–30% of conditioned air through duct leaks before it reaches the living spaces. That means up to a third of your HVAC energy spending is literally heating and cooling your attic, walls, and crawl spaces.

Beyond energy waste, poor ductwork causes comfort issues (uneven temperatures), air quality problems (dust and contaminant infiltration), and premature HVAC equipment failure (from restricted airflow and pressure imbalances).

Sheet Metal (Galvanized Steel): The most durable option with the longest lifespan. Handles high airflow volumes, resists crushing, and can be custom-fabricated to fit any layout. Preferred for main trunk lines and accessible areas.

Flexible Duct: Wire-reinforced flexible tubing with insulation. Easier and less expensive to install, especially in tight attic spaces. Must be properly supported and stretched taut — kinked or sagging flex duct severely restricts airflow.

Duct Board: Fiberglass panels fabricated into rectangular ducts. Good insulation properties and relatively quiet. Less durable than sheet metal and susceptible to moisture damage in humid environments.

Design Phase: A Manual D calculation determines the size, layout, and airflow requirements for each duct run based on your home's heating and cooling loads, room sizes, and register locations.

Installation: Old ductwork is removed, trunk lines are fabricated and hung, branch runs are connected, and registers/grilles are installed. All joints are sealed with mastic and ducts in unconditioned spaces are insulated.

Testing & Balancing: After installation, airflow is measured at each register and balanced using dampers. A duct blaster test verifies total system leakage meets the target threshold.

Design Methodology: Does the contractor reference Manual D calculations, or are they sizing based on experience? Proper design prevents under-sized and over-sized ducts that cause comfort and efficiency problems.

Material Specifications: What material for trunk lines vs branches? What gauge sheet metal? What type of insulation and R-value? These details separate quality installations from quick jobs.

Testing Protocol: Will the contractor perform pre-and-post duct leakage testing? This is the only way to verify the quality of the sealing work objectively.

Annually: Have your HVAC technician visually inspect accessible duct sections during routine maintenance. Look for disconnected joints, damaged insulation, and sagging flex duct.

Every 3–5 Years: Consider professional duct cleaning if you notice excessive dust, musty odors, or have completed a renovation that may have introduced construction debris into the system.

After Any Renovation: Whenever you modify your home's layout, have your ductwork evaluated to ensure it still delivers adequate airflow to all rooms, especially if walls were moved or rooms were added.