Ductwork Services

Ductwork Services

Leaky, undersized, or poorly routed ducts can waste up to 30 % of conditioned air—driving up energy costs and leaving rooms hot or cold. Duramax Heating & Cooling Inc. provides end-to-end ductwork services that restore proper airflow, eliminate dust leaks, and optimize system efficiency for homes and light-commercial buildings across the Portland metro.

Our NATE-certified airflow specialists use static-pressure testing, thermal imaging, and Manual D calculations to diagnose bottlenecks, then deliver custom solutions that meet ACCA standards and local codes. Whether you need a full redesign, Aeroseal® leak sealing, or simple airflow balancing, we back every job with clear reporting and a comfort guarantee.

Exceptional Service

• Respectful techs who protect floors and ceilings

• Up-front proposals—no surprise add-ons

• Same-day duct sealing on most homes

• Post-work airflow report and before/after photos

• Licensed, bonded, insured, and OSHA-compliant crews

Everything We Offer

Duct Design & Installation – Manual D layouts, rigid or flex runs, and proper sizing for new builds and remodels.

Aeroseal® Leak Sealing – Computer-verified sealing from the inside, cutting leakage up to 90 %.

Airflow Balancing – Register adjustments and damper installs to even out room-to-room temperatures.

Duct Repair & Replacement – Fix crushed, disconnected, or mold-contaminated sections to restore healthy airflow.

Insulation & Encapsulation – R-8 wrap and mastic sealing that prevent energy loss in attics and crawlspaces.

Dryer-Vent Cleaning & Rerouting – Reduces fire risk, boosts appliance efficiency, and meets IRC codes.

With advanced diagnostics, quality materials, and a relentless focus on comfort, Duramax turns leaky duct systems into efficient, whisper-quiet air highways—keeping Portland-area homes and businesses consistently comfortable year-round.