AC & heating repair · Federal Way, Washington
AC repair and HVAC service in Federal Way, WA
AC quit, heat pump struggling, or a system near the end of its life? In Federal Way, 58% of homes heat with electricity[1] and half were built before 1984. Request service from HVAC contractors working here. Federal Way, in King County — ZIPs 98003, 98023, counts 99,729 residents (2025 estimate)[2].
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Federal Way at a glance for HVAC
- Population (2025 est.)
- 99,729[2]-1.3% since 2020
- County
- King[2]
- Land area
- 22.3 sq mi[3]
- Homes heated with electricity
- 58%[1]the 5th-highest share of the 15 Seattle-area suburbs we cover
- Homes heated with utility gas
- 39%[1]plus 1% propane/LP
- Lightning-damage reports within 10 mi
- 0[4]2016–2025; power surges damage HVAC control boards
- Damaging-wind reports within 10 mi
- 0[4]2016–2025; wind-blown debris damages outdoor condenser units
- Homes built before 2000
- 81%[1]of 37,479 housing units
- Median year built
- 1984[1]the 6th-oldest of the 15 Seattle-area suburbs we cover
What Federal Way's numbers say about HVAC
Federal Way counts 99,729 residents (2025 estimate), growing at a middle-of-the-pack -1.3% since 2020[2]. The city spans 22.3 square miles at 4,469 residents per square mile (the 6th densest) and sits entirely in King County, served by ZIP codes 98003, 98023[3].
Only 9% of Federal Way's homes were built in 2010 or later, against 81% before 2000[1] — most systems here are past any builder warranty, and older homes often keep their original ductwork.
Mail to Federal Way goes through 2 ZIP codes — 98003 (46% of the city's land), 98023 (46% of the city's land)[5].
The closest tracked neighbours are Auburn (6.0 mi E), Kent (7.9 mi NE) and Puyallup (9.4 mi S)[3].
58% of occupied Federal Way homes heat with electricity, 39% with utility gas[1] — the 5th-highest electric share of the 15 Seattle-area suburbs we cover; nearby, Auburn (56%), Kent (56%), and Puyallup (57%) heat electrically. Electric heat usually means one outdoor unit doing both jobs.
Storm exposure for HVAC hardware: 0 lightning-damage reports within 10 miles; 0 damaging-wind reports within 10 miles in 2016–2025[4].
81% of Federal Way's 37,479 housing units were built before 2000 and 9% since 2010[1] (pre-2000 share nearby: Auburn (64%), Kent (78%), and Puyallup (73%)). Older homes often keep original ductwork.
Out of the 15 suburbs on this site, Federal Way has the 3rd-lowest share of homes built since 2010 (9%)[1].
How air moves through a central system
How the loop runs: return duct to filter to air handler to supply ducts. A dirty filter slows everything downstream.
Get HVAC help in Federal Way
AC & heating repair contractors taking requests around Federal Way cover ZIP codes 98003, 98023.
Before reaching out: repair or replace? what a good hvac visit covers
The Federal Way numbers behind this page
| Measure | Federal Way | Median of 15 | Difference |
|---|---|---|---|
| Propane / LP heat | 0.8% | 1.1% | about the same |
| Built 2010 or later | 9% | 13% | 4 pts lower |
| Built before 2000 | 81% | 73% | 9 pts higher |
| Electric heat | 58% | 56% | 2 pts higher |
| Utility-gas heat | 39% | 40% | 1 pts lower |
| Median year built | 1984 | 1985 | 1 year older |
Sorted by largest difference. Each median is the middle value across the covered Seattle-area suburbs, from the same sources.
| Main heating fuel | Homes | Share | Margin of error |
|---|---|---|---|
| Electricity | 20,781 | 58.2% | ±1,040 |
| Utility gas | 13,899 | 38.9% | ±688 |
| Bottled or tank gas (propane, butane, etc.) | 274 | 0.8% | ±174 |
| Wood | 222 | 0.6% | ±107 |
| Fuel oil, kerosene, etc. | 218 | 0.6% | ±85 |
| No fuel used | 180 | 0.5% | ±81 |
| Other fuel | 132 | 0.4% | ±102 |
| Solar energy | 11 | 0.0% | ±16 |
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 179 | 0.5% | ±104 |
| 2010 to 2019 | 3,174 | 8.5% | ±530 |
| 2000 to 2009 | 3,581 | 9.6% | ±526 |
| 1990 to 1999 | 6,512 | 17.4% | ±692 |
| 1980 to 1989 | 9,006 | 24.0% | ±760 |
| 1970 to 1979 | 7,627 | 20.4% | ±713 |
| 1960 to 1969 | 5,418 | 14.5% | ±456 |
| 1950 to 1959 | 1,235 | 3.3% | ±319 |
| 1940 to 1949 | 208 | 0.6% | ±81 |
| 1939 or earlier | 539 | 1.4% | ±213 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| Measure | Value |
|---|---|
| Housing units | 37,479 |
| Detached single-family | 18,430 (49%) |
| Occupied homes | 35,717 |
| Owner-occupied | 19,757 (55%) |
| Renter-occupied | 15,960 (45%) |
| Median home value | $552,800 |
ACS 2020–2024 estimates.
| ZIP (ZCTA) | Share of Federal Way's land | Share of the ZIP inside the city |
|---|---|---|
| 98003 | 46% | 89% |
| 98023 | 46% | 100% |
Federal Way HVAC questions
Are heat pumps common in Federal Way?
58% of Federal Way homes heat with electricity[1], which means a heat pump or electric resistance heat.
How old are Federal Way's homes — and their HVAC systems?
The median home dates to 1984, and 9% were built in 2010 or later[1]. Your own system may have been replaced since — the outdoor unit's data plate shows when it was made.
Sources
- Census ACS 2020–2024 5-year (keyless bulk)
- Census population estimates, Vintage 2025
- Census Gazetteer 2025
- NOAA Storm Events Database
- Census 2020 ZCTA–place file
Data pulled Sep 28, 2026. Full citations and method.