AC & heating repair · Westminster, Colorado
AC repair and HVAC service in Westminster, CO
AC quit, heat pump struggling, or a system near the end of its life? In Westminster, 29% of homes heat with electricity[1] and half were built before 1987. Request service from HVAC contractors working here. Westminster, in Adams County and Jefferson County — ZIPs 80021, 80031, 80234, 80030, counts 116,182 residents (2025 estimate)[2].
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The Westminster HVAC picture in brief
- Population (2025 est.)
- 116,182[2]-0.4% since 2020
- County
- Adams / Jefferson[2]city spans more than one county
- Land area
- 31.6 sq mi[3]
- Homes heated with electricity
- 29%[1]the 5th-highest share of the 15 Denver-area suburbs we cover
- Homes heated with utility gas
- 69%[1]plus 1% propane/LP
- Lightning-damage reports within 10 mi
- 3[4]2016–2025; power surges damage HVAC control boards
- Damaging-wind reports within 10 mi
- 34[4]2016–2025; wind-blown debris damages outdoor condenser units
- Homes built before 2000
- 76%[1]of 50,471 housing units
- Median year built
- 1987[1]the 8th-newest of the 15 Denver-area suburbs we cover
What Westminster's numbers say about HVAC
Westminster is one of the most established suburbs tracked here — 116,182 people (2025 estimate), down just 0.4% since 2020[2]. On the map that's 31.6 square miles holding 3,673 residents per square mile, the 4th densest of the suburbs here; it spans Adams County and Jefferson County, with ZIP codes 80021, 80031, 80234, 80030[3].
Only 12% of Westminster's homes were built in 2010 or later, against 76% before 2000[1] — most systems here are past any builder warranty, and older homes often keep their original ductwork.
4 ZIP codes cover Westminster — 80021 (25% of the city's land), 80031 (24% of the city's land), 80234 (16% of the city's land), 80030 (8% of the city's land)[5].
The tracked suburbs closest by are Northglenn (4.7 mi NE), Broomfield (5.1 mi N) and Arvada (5.7 mi SW)[3].
29% of occupied Westminster homes heat with electricity, 69% with utility gas[1] — the 5th-highest electric share of the 15 Denver-area suburbs we cover; nearby, Northglenn (29%), Broomfield (27%), and Arvada (23%) heat electrically. Gas heat means a furnace plus a separate AC condenser.
Storm exposure for HVAC hardware: 3 lightning-damage reports within 10 miles; 34 damaging-wind reports within 10 miles in 2016–2025[4]. Most recent: Jul 10, 2025, 9.1 miles from the city center.
76% of Westminster's 50,471 housing units were built before 2000 and 12% since 2010[1] (pre-2000 share nearby: Northglenn (79%), Broomfield (45%), and Arvada (74%)). Older homes often keep original ductwork.
How air moves through a central system
Return, filter, air handler, supply ducts: a clogged filter slows the whole loop.
Westminster storm calendar
Within 10 miles of Westminster, 2016–2025: 34 damaging-wind reports and 3 lightning reports[4]. Peak: 95% in June, July, and August. Busiest year 2020 (14); 1 of 10 years had none. Busiest month June 2020 (14). Latest: damaging-wind report, Jul 10, 2025, 6.4 mi out.
| Month | Damaging wind | Lightning | All |
|---|---|---|---|
| May | 1 | 1 | 2 |
| Jun | 15 | 1 | 16 |
| Jul | 14 | 1 | 15 |
| Aug | 4 | – | 4 |
Get HVAC help in Westminster
Your request reaches AC & heating repair contractors who serve Westminster (ZIP codes 80021, 80031, 80234, 80030).
Before reaching out: repair or replace? what a good hvac visit covers
The data underneath this Westminster page
| Measure | Westminster | Median of 15 | Difference |
|---|---|---|---|
| Built 2010 or later | 12% | 15% | 3 pts lower |
| Electric heat | 29% | 26% | 3 pts higher |
| Damaging-wind reports (10 mi) | 34 | 31 | 3 more |
| Propane / LP heat | 1.0% | 0.9% | about the same |
| Built before 2000 | 76% | 71% | 5 pts higher |
| Utility-gas heat | 69% | 71% | 2 pts lower |
| Median year built | 1987 | 1987 | same as median |
Biggest gaps first. Medians are middle values across the Denver-area suburbs we cover, drawn from the same sources.
| City | Lightning reports | Damaging-wind reports |
|---|---|---|
| Westminster | 3 | 34 |
| Northglenn 4.7 mi | 2 | 30 |
| Broomfield 5.1 mi | 1 | 22 |
| Arvada 5.7 mi | 2 | 21 |
| Thornton 6.9 mi | 1 | 33 |
| Golden 12.4 mi | 2 | 11 |
| Date | Wind | Distance |
|---|---|---|
| Jul 10, 2025 | 59 mph | 9.1 mi |
| Jul 10, 2025 | 58 mph | 8.8 mi |
| Jul 10, 2025 | 58 mph | 8.2 mi |
| Jul 10, 2025 | 64 mph | 8.1 mi |
| Jul 10, 2025 | 64 mph | 6.4 mi |
| Jul 8, 2025 | 49 mph (est.) | 4.4 mi |
| Date | Distance |
|---|---|
| May 24, 2023 | 9.0 mi |
| Jun 2, 2019 | 5.5 mi |
| Jul 19, 2016 | 5.6 mi |
| Main heating fuel | Homes | Share | Margin of error |
|---|---|---|---|
| Utility gas | 33,178 | 69.0% | ±1,065 |
| Electricity | 13,733 | 28.5% | ±993 |
| Bottled or tank gas (propane, butane, etc.) | 477 | 1.0% | ±174 |
| No fuel used | 305 | 0.6% | ±140 |
| Other fuel | 160 | 0.3% | ±103 |
| Wood | 131 | 0.3% | ±138 |
| Solar energy | 107 | 0.2% | ±83 |
| Fuel oil, kerosene, etc. | 15 | 0.0% | ±24 |
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 791 | 1.6% | ±232 |
| 2010 to 2019 | 5,325 | 10.6% | ±506 |
| 2000 to 2009 | 5,919 | 11.7% | ±707 |
| 1990 to 1999 | 10,024 | 19.9% | ±808 |
| 1980 to 1989 | 11,408 | 22.6% | ±722 |
| 1970 to 1979 | 10,624 | 21.0% | ±763 |
| 1960 to 1969 | 2,540 | 5.0% | ±337 |
| 1950 to 1959 | 3,126 | 6.2% | ±468 |
| 1940 to 1949 | 319 | 0.6% | ±138 |
| 1939 or earlier | 395 | 0.8% | ±230 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| Measure | Value |
|---|---|
| Housing units | 50,471 |
| Detached single-family | 27,484 (54%) |
| Occupied homes | 48,106 |
| Owner-occupied | 29,786 (62%) |
| Renter-occupied | 18,320 (38%) |
| Median home value | $532,400 |
ACS 2020–2024 estimates.
| ZIP (ZCTA) | Share of Westminster's land | Share of the ZIP inside the city |
|---|---|---|
| 80021 | 25% | 48% |
| 80031 | 24% | 91% |
| 80234 | 16% | 71% |
| 80030 | 8% | 97% |
Westminster HVAC questions
Are heat pumps common in Westminster?
29% of Westminster homes heat with electricity[1], which means a heat pump or electric resistance heat.
How old are Westminster's homes — and their HVAC systems?
The median home dates to 1987, and 12% 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 Westminster ZIP codes are covered?
80021, 80031, 80234, and 80030[5], Adams County. Nearby pages: Northglenn (4.7 mi), Broomfield (5.1 mi), and Arvada (5.7 mi)[3].
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.