Ductvac Northwest LLC.

The company says it was founded in 2006 and holds NADCA certification. It advertises duct sealing with AeroSeal and duct sanitizing with Enivocon, and it offers a free inspection. The state lists David Kostecka as a principal since 2007 and Julie Kostecka since 2019, and the business describes itself as family-owned and veteran-owned. Public work runs from 2009 to 2026, mostly as prime contractor, for agencies including the King County Housing Authority, the City of Everett, the state Department of Enterprise Services, Eastern State Hospital, Seattle Public Utilities and several school districts from Edmonds to Bellingham. The crew is small, one to three people by the state's count, with the owner doing the work. That suits a homeowner who wants ducts cleaned and sanitized as regular air quality upkeep, or a property manager with commercial ductwork to clean and seal. Ductvac Northwest is a ventilation maintenance outfit, not a furnace installer or remodeler, so a job that also needs new equipment, framing, or electrical and plumbing work will need other trades. Around Spokane, duct and dryer vent work tends to bunch up in the fall, when households get ready to run the furnace all winter, and again in late summer after wildfire smoke has been pulled through the system. Spring is often an easier time to get on the calendar. A crew that also covers the Puget Sound counties splits its time between both sides of the state, so it pays to call a few weeks before you want the work done, and earlier than that if you're aiming for the weeks just before heating season starts.