AC & heating repair · Webster Groves, Missouri
AC repair and HVAC service in Webster Groves, MO
AC quit, heat pump struggling, or a system near the end of its life? In Webster Groves, 20% of homes heat with electricity[1] and half were built before 1952. Request service from HVAC contractors working here. Webster Groves, in St. Louis County — ZIP 63119, counts 23,450 residents (2025 estimate)[2].
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The Webster Groves HVAC picture in brief
- Population (2025 est.)
- 23,450[2]-2.3% since 2020
- County
- St. Louis[2]
- Land area
- 5.9 sq mi[3]
- Homes heated with electricity
- 20%[1]the 4th-lowest share of the 15 St. Louis–area suburbs we cover
- Homes heated with utility gas
- 79%[1]plus 1% propane/LP
- Heat & excessive-heat days, st. louis zone
- 21[4]2016–2025
- Winter-storm & freeze days, st. louis zone
- 12[4]2016–2025; heating demand and freeze-related furnace failures
- Lightning-damage reports within 10 mi
- 2[4]2016–2025; power surges damage HVAC control boards
- Damaging-wind reports within 10 mi
- 76[4]2016–2025; wind-blown debris damages outdoor condenser units
- Homes built before 2000
- 95%[1]of 9,921 housing units
- Median year built
- 1952[1]the 2nd-oldest of the 15 St. Louis–area suburbs we cover
What Webster Groves's numbers say about HVAC
Webster Groves is one of the most established suburbs tracked here — 23,450 people (2025 estimate), down just 2.3% since 2020[2]. On the map that's 5.9 square miles holding 3,967 residents per square mile, the 3rd densest of the suburbs here; it sits entirely in St. Louis County, with ZIP code 63119[3].
Only 3% of Webster Groves's homes were built in 2010 or later, against 95% before 2000[1] — most systems here are past any builder warranty, and older homes often keep their original ductwork.
The entire city sits in ZIP code 63119[5].
The tracked suburbs closest by are Kirkwood (3.6 mi W), University City (5.6 mi N) and Ballwin (10.6 mi W)[3].
20% of occupied Webster Groves homes heat with electricity, 79% with utility gas[1] — the 4th-lowest electric share of the 15 St. Louis–area suburbs we cover; nearby, Kirkwood (22%), University City (19%), and Ballwin (14%) heat electrically. Gas heat means a furnace plus a separate AC condenser.
St. Louis County forecast zone, 2016–2025: 21 heat or excessive-heat days (latest Aug 16, 2025) and 12 winter-storm or hard-freeze days[4].
Storm exposure for HVAC hardware: 2 lightning-damage reports within 10 miles; 76 damaging-wind reports within 10 miles in 2016–2025[4]. Most recent: Jun 27, 2025, 0.9 miles from the city center.
95% of Webster Groves's 9,921 housing units were built before 2000 and 3% since 2010[1] (pre-2000 share nearby: Kirkwood (81%), University City (94%), and Ballwin (92%)). Older homes often keep original ductwork.
Among the 15 suburbs tracked here, Webster Groves stands out for the 2nd-oldest housing (by median year built) (1952)[1] and the 3rd-highest gas-heat share (79%)[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.
Webster Groves storm calendar
Within 10 miles of Webster Groves, 2016–2025: 76 damaging-wind reports and 2 lightning reports[4]. Peak: 64% in May, June, and July. Busiest year 2023 (17). Busiest month July 2023 (8). Latest: damaging-wind report, Jun 27, 2025, 3.0 mi out.
| Month | Damaging wind | Lightning | All |
|---|---|---|---|
| Mar | 3 | – | 3 |
| Apr | 11 | – | 11 |
| May | 16 | – | 16 |
| Jun | 15 | – | 15 |
| Jul | 18 | 1 | 19 |
| Aug | 8 | – | 8 |
| Sep | 1 | 1 | 2 |
| Oct | 2 | – | 2 |
| Nov | 1 | – | 1 |
| Dec | 1 | – | 1 |
HVAC help in Webster Groves: what to do next
Your request reaches AC & heating repair contractors who serve Webster Groves (ZIP code 63119).
Before you pick up the phone: repair or replace? what a good hvac visit covers
Webster Groves by the numbers
| Measure | Webster Groves | Median of 15 | Difference |
|---|---|---|---|
| Propane / LP heat | 0.6% | 1.4% | 1 pts lower |
| Built 2010 or later | 3% | 6% | 3 pts lower |
| Electric heat | 20% | 29% | 9 pts lower |
| Utility-gas heat | 79% | 69% | 10 pts higher |
| Built before 2000 | 95% | 83% | 11 pts higher |
| Damaging-wind reports (10 mi) | 76 | 72 | 4 more |
| Median year built | 1952 | 1977 | 25 years older |
Biggest gaps first. Medians are middle values across the St. Louis–area suburbs we cover, drawn from the same sources.
| City | Heat days | Freeze days | Lightning reports | Damaging-wind reports |
|---|---|---|---|---|
| Webster Groves | 21 | 12 | 2 | 76 |
| Kirkwood 3.6 mi | 21 | 12 | 3 | 79 |
| University City 5.6 mi | 21 | 12 | 2 | 92 |
| Ballwin 10.6 mi | 21 | 12 | 1 | 72 |
| Maryland Heights 11.0 mi | 21 | 12 | 1 | 90 |
| Arnold 11.1 mi | 11 | 11 | 1 | 33 |
| Date | Wind | Distance |
|---|---|---|
| Jun 27, 2025 | 69 mph (est.) | 0.9 mi |
| Jun 27, 2025 | 58 mph (est.) | 3.0 mi |
| May 16, 2025 | 60 mph | 6.9 mi |
| May 16, 2025 | 69 mph (est.) | 5.4 mi |
| May 16, 2025 | 69 mph (est.) | 2.3 mi |
| Mar 14, 2025 | 86 mph (est.) | 9.1 mi |
| Date | Distance |
|---|---|
| Jul 19, 2020 | 6.1 mi |
| Sep 8, 2018 | 2.3 mi |
| Main heating fuel | Homes | Share | Margin of error |
|---|---|---|---|
| Utility gas | 7,468 | 79.1% | ±464 |
| Electricity | 1,896 | 20.1% | ±365 |
| Bottled or tank gas (propane, butane, etc.) | 57 | 0.6% | ±43 |
| No fuel used | 9 | 0.1% | ±14 |
| Wood | 8 | 0.1% | ±13 |
| Other fuel | 8 | 0.1% | ±13 |
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 106 | 1.1% | ±63 |
| 2010 to 2019 | 212 | 2.1% | ±74 |
| 2000 to 2009 | 219 | 2.2% | ±100 |
| 1990 to 1999 | 719 | 7.2% | ±260 |
| 1980 to 1989 | 680 | 6.9% | ±225 |
| 1970 to 1979 | 528 | 5.3% | ±168 |
| 1960 to 1969 | 698 | 7.0% | ±376 |
| 1950 to 1959 | 2,154 | 21.7% | ±303 |
| 1940 to 1949 | 1,126 | 11.3% | ±263 |
| 1939 or earlier | 3,479 | 35.1% | ±288 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| Measure | Value |
|---|---|
| Housing units | 9,921 |
| Detached single-family | 7,876 (79%) |
| Occupied homes | 9,446 |
| Owner-occupied | 7,186 (76%) |
| Renter-occupied | 2,260 (24%) |
| Median home value | $387,600 |
ACS 2020–2024 estimates.
| ZIP (ZCTA) | Share of Webster Groves's land | Share of the ZIP inside the city |
|---|---|---|
| 63119 | 99% | 70% |
Dated heat and freeze records for the ST. LOUIS forecast zone: see the county list.
Webster Groves HVAC questions
Are heat pumps common in Webster Groves?
20% of Webster Groves homes heat with electricity[1], which means a heat pump or electric resistance heat.
How old are Webster Groves's homes — and their HVAC systems?
The median home dates to 1952, and 3% 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 Webster Groves ZIP codes are covered?
63119[5], St. Louis County. Nearby pages: Kirkwood (3.6 mi), University City (5.6 mi), and Ballwin (10.6 mi)[3].
A lot of Webster Groves homes predate 1980 — what does that mean for HVAC equipment work?
80% of Webster Groves's housing units were built before 1980, 68.1% before 1960[1] — the 3rd-highest share of the 15 St. Louis–area suburbs we cover. The ductwork in an older house is often original even when the equipment is not — ask for a duct leakage check with any replacement quote.
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.