AC & heating repair · Bothell, Washington
AC repair and HVAC service in Bothell, WA
AC quit, heat pump struggling, or a system near the end of its life? In Bothell, 51% of homes heat with electricity[1] and half were built before 1992. Request service from HVAC contractors working here. Bothell, in King County and Snohomish County — ZIPs 98011, 98021, counts 52,199 residents (2025 estimate)[2].
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The Bothell HVAC picture in brief
- Population (2025 est.)
- 52,199[2]+8.4% since 2020
- County
- King / Snohomish[2]city spans more than one county
- Land area
- 13.6 sq mi[3]
- Homes heated with electricity
- 51%[1]the 4th-lowest share of the 15 Seattle-area suburbs we cover
- Homes heated with utility gas
- 47%[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
- 61%[1]of 20,533 housing units
- Median year built
- 1992[1]the 4th-newest of the 15 Seattle-area suburbs we cover
Reading the Bothell data for HVAC
Bothell is one of the fastest-growing Seattle-metro suburbs tracked here: 52,199 people (2025 estimate), up 8.4% since 2020[2]. It covers 13.6 square miles (3,828 residents per square mile, the 9th densest), spans King County and Snohomish County, in ZIP codes 98011, 98021[3].
With 24% of homes built in 2010 or later[1], a good share of Bothell's equipment may still be under builder or manufacturer warranty; the 61% built before 2000 is where replacement jobs cluster.
2 ZIP codes cover Bothell — 98011 (52% of the city's land), 98021 (46% of the city's land)[5].
The closest tracked neighbours are Kirkland (5.3 mi S), Lynnwood (5.9 mi NW) and Edmonds (7.4 mi W)[3].
51% of occupied Bothell homes heat with electricity, 47% with utility gas[1] — the 4th-lowest electric share of the 15 Seattle-area suburbs we cover; nearby, Kirkland (49%), Lynnwood (63%), and Edmonds (47%) 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].
61% of Bothell's 20,533 housing units were built before 2000 and 24% since 2010[1] (pre-2000 share nearby: Kirkland (75%), Lynnwood (80%), and Edmonds (86%)). Older homes often keep original ductwork.
Measured against the 15 suburbs on this site, Bothell records the 3rd-highest share of homes built since 2010 (24%)[1].
How air moves through a central system
Return, filter, air handler, supply ducts: a clogged filter slows the whole loop.
Get HVAC help in Bothell
AC & heating repair contractors taking requests around Bothell cover ZIP codes 98011, 98021.
Before you pick up the phone: repair or replace? what a good hvac visit covers
Bothell by the numbers
| Measure | Bothell | Median of 15 | Difference |
|---|---|---|---|
| Built 2010 or later | 24% | 13% | 11 pts higher |
| Propane / LP heat | 0.8% | 1.1% | about the same |
| Built before 2000 | 61% | 73% | 12 pts lower |
| Utility-gas heat | 47% | 40% | 6 pts higher |
| Electric heat | 51% | 56% | 5 pts lower |
| Median year built | 1992 | 1985 | 7 years newer |
Biggest gaps first. Medians are middle values across the Seattle-area suburbs we cover, drawn from the same sources.
| Main heating fuel | Homes | Share | Margin of error |
|---|---|---|---|
| Electricity | 9,925 | 51.0% | ±604 |
| Utility gas | 9,050 | 46.5% | ±509 |
| Bottled or tank gas (propane, butane, etc.) | 153 | 0.8% | ±88 |
| Fuel oil, kerosene, etc. | 147 | 0.8% | ±97 |
| Wood | 119 | 0.6% | ±69 |
| No fuel used | 36 | 0.2% | ±38 |
| Solar energy | 18 | 0.1% | ±29 |
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 1,052 | 5.1% | ±325 |
| 2010 to 2019 | 3,778 | 18.4% | ±418 |
| 2000 to 2009 | 3,165 | 15.4% | ±370 |
| 1990 to 1999 | 3,000 | 14.6% | ±392 |
| 1980 to 1989 | 4,023 | 19.6% | ±519 |
| 1970 to 1979 | 2,613 | 12.7% | ±375 |
| 1960 to 1969 | 1,808 | 8.8% | ±290 |
| 1950 to 1959 | 552 | 2.7% | ±145 |
| 1940 to 1949 | 236 | 1.1% | ±153 |
| 1939 or earlier | 306 | 1.5% | ±133 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| Measure | Value |
|---|---|
| Housing units | 20,533 |
| Detached single-family | 11,070 (54%) |
| Occupied homes | 19,448 |
| Owner-occupied | 12,738 (65%) |
| Renter-occupied | 6,710 (35%) |
| Median home value | $925,100 |
ACS 2020–2024 estimates.
| ZIP (ZCTA) | Share of Bothell's land | Share of the ZIP inside the city |
|---|---|---|
| 98011 | 52% | 100% |
| 98021 | 46% | 62% |
Bothell HVAC questions
Are heat pumps common in Bothell?
51% of Bothell homes heat with electricity[1], which means a heat pump or electric resistance heat.
How old are Bothell's homes — and their HVAC systems?
The median home dates to 1992, and 24% 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.
Which Bothell ZIP codes are covered?
98011 and 98021[5], King County. Nearby pages: Kirkland (5.3 mi), Lynnwood (5.9 mi), and Edmonds (7.4 mi)[3].
My Bothell home is fairly new — could the HVAC equipment still be under warranty?
Possibly: 24% of Bothell's housing units were built in 2010 or later[1], the 3rd-highest share of the 15 Seattle-area suburbs we cover. Check your closing paperwork for warranties before paying for a repair.
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.