AC & heating repair · Sammamish, Washington
AC repair and HVAC service in Sammamish, WA
AC quit, heat pump struggling, or a system near the end of its life? In Sammamish, 26% of homes heat with electricity[1] and half were built before 1994. Request service from HVAC contractors working here. Sammamish, in King County — ZIPs 98075, 98074, counts 66,110 residents (2025 estimate)[2].
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Sammamish HVAC snapshot: the key figures
- Population (2025 est.)
- 66,110[2]-2.0% since 2020
- County
- King[2]
- Land area
- 20.4 sq mi[3]
- Homes heated with electricity
- 26%[1]the lowest share of the 15 Seattle-area suburbs we cover
- Homes heated with utility gas
- 72%[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
- 67%[1]of 22,610 housing units
- Median year built
- 1994[1]the 2nd-newest of the 15 Seattle-area suburbs we cover
What the local data means for HVAC in Sammamish
Sammamish is one of the most established suburbs tracked here — 66,110 people (2025 estimate), down just 2.0% since 2020[2]. It covers 20.4 square miles (3,236 residents per square mile, the 13th densest), sits entirely in King County, in ZIP codes 98075, 98074[3].
Only 13% of Sammamish's homes were built in 2010 or later, against 67% before 2000[1] — most systems here are past any builder warranty, and older homes often keep their original ductwork.
2 ZIP codes cover Sammamish — 98075 (46% of the city's land), 98074 (44% of the city's land)[5].
The tracked suburbs closest by are Issaquah (3.5 mi S), Bellevue (5.5 mi W) and Redmond (6.8 mi NW)[3].
26% of occupied Sammamish homes heat with electricity, 72% with utility gas and 1% with propane[1] — the lowest electric share of the 15 Seattle-area suburbs we cover; nearby, Issaquah (52%), Bellevue (52%), and Redmond (59%) heat electrically. Gas heat means a furnace plus a separate AC condenser.
Storm exposure for HVAC hardware: 0 lightning-damage reports within 10 miles; 0 damaging-wind reports within 10 miles in 2016–2025[4].
67% of Sammamish's 22,610 housing units were built before 2000 and 13% since 2010[1] (pre-2000 share nearby: Issaquah (43%), Bellevue (73%), and Redmond (60%)). Older homes often keep original ductwork.
Measured against the 15 suburbs on this site, Sammamish records the lowest electric-heat share (26%)[1], the highest gas-heat share (72%)[1], and the 2nd-newest housing (by median year built) (1994)[1].
How air moves through a central system
Air path: return duct, filter, air handler, supply ducts — one clogged filter drags the whole loop down.
Get HVAC help in Sammamish
Requests go to AC & heating repair contractors serving the Sammamish area — ZIP codes 98075, 98074.
Before you call: repair or replace? what a good hvac visit covers
Sammamish by the numbers
| Measure | Sammamish | Median of 15 | Difference |
|---|---|---|---|
| Utility-gas heat | 72% | 40% | 32 pts higher |
| Electric heat | 26% | 56% | 30 pts lower |
| Propane / LP heat | 1.4% | 1.1% | about the same |
| Built before 2000 | 67% | 73% | 6 pts lower |
| Median year built | 1994 | 1985 | 9 years newer |
| Built 2010 or later | 13% | 13% | about the same |
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 |
|---|---|---|---|
| Utility gas | 15,964 | 72.1% | ±639 |
| Electricity | 5,744 | 25.9% | ±622 |
| Bottled or tank gas (propane, butane, etc.) | 316 | 1.4% | ±104 |
| Fuel oil, kerosene, etc. | 60 | 0.3% | ±43 |
| Wood | 49 | 0.2% | ±38 |
| Other fuel | 11 | 0.0% | ±15 |
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 135 | 0.6% | ±73 |
| 2010 to 2019 | 2,737 | 12.1% | ±332 |
| 2000 to 2009 | 4,684 | 20.7% | ±375 |
| 1990 to 1999 | 6,276 | 27.8% | ±602 |
| 1980 to 1989 | 5,845 | 25.9% | ±479 |
| 1970 to 1979 | 1,986 | 8.8% | ±351 |
| 1960 to 1969 | 609 | 2.7% | ±159 |
| 1950 to 1959 | 173 | 0.8% | ±82 |
| 1940 to 1949 | 48 | 0.2% | ±39 |
| 1939 or earlier | 117 | 0.5% | ±57 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| Measure | Value |
|---|---|
| Housing units | 22,610 |
| Detached single-family | 18,394 (81%) |
| Occupied homes | 22,144 |
| Owner-occupied | 18,280 (83%) |
| Renter-occupied | 3,864 (17%) |
| Median home value | $1,407,300 |
ACS 2020–2024 estimates.
| ZIP (ZCTA) | Share of Sammamish's land | Share of the ZIP inside the city |
|---|---|---|
| 98075 | 46% | 98% |
| 98074 | 44% | 86% |
HVAC questions from Sammamish homeowners
Are heat pumps common in Sammamish?
26% of Sammamish homes heat with electricity[1], which means a heat pump or electric resistance heat.
How old are Sammamish's homes — and their HVAC systems?
The median home dates to 1994, and 13% 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.