Ductwork Installation & Replacement in Puget Sound

Time for New Ductwork, Not Another Patch?

Is your duct system so old, rusted, or undersized that every repair feels like taping over a sinking boat? If your home has original sheet metal from the 1960s, sagging builder-grade flex duct, or no ducts at all in an addition that never gets comfortable, patch repairs stop making financial sense. Eco Electric, Plumbing, Heating and Air designs and installs complete duct systems across Seattle, Everett, Mount Vernon, and the greater Puget Sound — sized correctly, sealed properly, and verified with real airflow measurements.

Signs You Need Replacement Instead of Repair

Rusted or Corroded Sheet Metal

Puget Sound crawlspaces stay damp most of the year, and decades of that moisture eat through galvanized duct from the outside in. Once rust perforates the metal, sealing individual leaks becomes a losing battle — the whole run is failing at once. Replacement with properly insulated, sealed duct ends the cycle for good.

Undersized Ducts Choking New Equipment

Modern high-efficiency furnaces and heat pumps move more air than the equipment they replace. Connect them to undersized trunk lines and the system runs loud, trips on high static pressure, and never delivers its rated efficiency. If you're planning a heat pump conversion, having the duct design evaluated first protects the entire investment.

Sagging, Crushed, or Patchwork Flex Duct

Flex duct installed without proper support sags into tight bends that strangle airflow. Years of remodels leave many homes with a patchwork of mismatched materials, abandoned runs, and dead-end branches. At a certain point, a clean-sheet redesign is cheaper than untangling the mess.

Rooms That Have Never Been Comfortable

An addition that roasts in summer, a bonus room over the garage that freezes in winter, a finished basement with one starved register — these are duct design problems, and no thermostat setting fixes them. New properly-sized runs, or a redesigned trunk-and-branch layout, deliver the airflow the original install never did.

How We Design and Install Ductwork

Every project starts with a real load calculation — room by room, based on your home's square footage, insulation, windows, and orientation — not a rule-of-thumb guess. From that we design the duct layout: trunk sizes, branch runs, return paths, and register locations that actually match the equipment's airflow requirements.

On installation day, our licensed technicians fabricate and hang the new system, mechanically fasten and mastic-seal every joint, insulate runs to current code, and support flex duct so it stays round and straight for the long haul. We seal boots to the subfloor, size returns generously so the system breathes, and finish with airflow measurements at every register and a static pressure check at the equipment — proof the system delivers what the design promised. You get upfront pricing before work begins, and every job is backed by our 100% Satisfaction Guarantee from a team serving Puget Sound since 2012 with a 4.9-star rating across more than 2,300 Google reviews.

Related Services

Not sure whether your ducts need full replacement? Start with Ductwork Inspection & Testing for hard data before you decide. If the metal is sound but leaky, targeted Ductwork Repair & Service may be the smarter spend. And for spaces where running new ducts isn't practical, our Ductless Installation & Replacement team can deliver zoned comfort without any ductwork at all.

The Cost of Living With Failing Ducts

Keeping a failed duct system limping along means paying for conditioned air that never arrives — industry testing routinely finds 20 to 30 percent losses in old, leaky systems. It also means your new equipment ages faster, working against static pressure it was never designed for. Replacing the ducts alongside (or ahead of) an equipment upgrade is consistently the cheaper path over the life of the system.

Get a Duct System Built for Your Home

Whether it's a full replacement under an older Everett craftsman, new runs for a Mount Vernon addition, or a redesign to unlock your Seattle home's new heat pump, we handle design, fabrication, installation, and verification under one roof. Schedule your consultation or call (206) 970-1031 for same-day scheduling whenever availability permits.