HVAC & air ducts · Federal Way, WA
Federal Way furnaces, heat pumps and ductwork
Many Federal Way homes still run their original-era furnace and flex duct. We replace aging equipment, add cooling and rebuild leaky duct runs in the attic and crawl space.
- Inspect crawl space supply runs for crushed flex duct
- Check upstairs attic duct runs in two-story homes
- Size heat pumps to cover both heating and summer cooling
HVAC & air ducts for Federal Way homes · Seattle, WAFederal Way homes
HVAC & air ducts built around Federal Way houses
A lot of Federal Way homes are on their second furnace, and some of those are now at the end of their life too. The bigger issue is often the ductwork. In split-levels and ramblers, supply ducts run through a crawl space that is damp most of the year. In two-story homes, upstairs ducts cross a hot attic in summer and a cold one in winter. Flex duct from the 1980s and 1990s gets crushed, sags between hangers and separates at the boots. When that happens, you pay to heat the crawl space, and the rooms at the end of the run never get warm.
We look at the whole system before recommending equipment. That means checking the furnace or heat pump, measuring how the ducts are routed and sealed, and asking which rooms are uncomfortable. Many homeowners are replacing a gas furnace with a ducted heat pump, or pairing the two, to get cooling for the hotter summer stretches the area has seen since the 2021 heat dome. Where a room addition or bonus room was never ducted, a ductless mini-split is often the cleanest fix. New ductwork is sealed at every joint, hung so it cannot sag, and insulated where it runs through unconditioned space.
- Inspect crawl space supply runs for crushed flex duct
- Check upstairs attic duct runs in two-story homes
- Size heat pumps to cover both heating and summer cooling
- Add ductless heads to bonus rooms and additions
Local conditions
What Federal Way throws at attics and crawl spaces
The houses
Most of Federal Way was built after 1960, as subdivisions spread out from Pacific Highway and I-5. Marine Hills and the Dash Point area have 1960s and 1970s view homes on sloped lots, often with daylight basements. Twin Lakes, Lakota and Steel Lake are full of 1970s and 1980s split-levels, ramblers and two-stories over crawl spaces, with truss attics and blown-in fiberglass. West Campus adds 1990s and 2000s homes with vaulted ceilings and tighter attic spaces. Many of these houses are now on their first or second set of original insulation and ducts.
The weather
Federal Way sits on a plateau between Puget Sound and the Green River valley, with Poverty Bay and Dash Point on its western edge. The city is dotted with small lakes and wetlands, including Steel Lake, Mirror Lake and the West Hylebos. Tall Douglas firs shade many lots. Rain arrives in long gray stretches from fall through spring, and low spots near lakes and wetlands stay damp for weeks.
The wildlife
Greenbelts, wetlands and wooded ravines run through Federal Way subdivisions, giving rats and mice cover close to houses. Roof rats use fir branches and fence lines to reach rooflines. Norway rats burrow near lakes, creeks and drainage ponds. Squirrels and raccoons from the West Hylebos and the old Weyerhaeuser campus woods regularly test attic vents and roof edges.
Typical results
What hvac & air ducts looks like
BeforeAfterHow it works
Same crew, same standard, in Federal Way
- 01
Free inspection
- 02
A plain plan
- 03
Scheduled work, one crew
- 04
Start-up and walk-through
FAQ
HVAC & air ducts in Federal Way: FAQ
Still unsure? Call (800) 674-4933 and talk it through with us.
Should I replace my furnace with a heat pump in Federal Way?
For many homes it is a good fit. Heat pumps handle the region's mild, damp winters well and also provide air conditioning. Some homeowners keep a gas furnace as backup for cold snaps. We look at your existing ducts, electrical panel and comfort goals, then explain the options plainly.
Why is one room in my house always colder than the rest?
The most common reasons are a long duct run, a crushed or disconnected duct, or a room over the garage with poor insulation. In Federal Way split-levels, rooms at the far end of the crawl space duct runs are frequent offenders. We inspect the ducts and insulation feeding that room and show you photos.
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Free hvac & air ducts inspection in Federal Way.
Book a free inspection. We'll photograph your attic and crawl space and walk you through what we find, before you decide anything.