AC & heating repair · Lawrenceville, Georgia
AC repair and HVAC service in Lawrenceville, GA
AC quit, heat pump struggling, or a system near the end of its life? In Lawrenceville, 44% of homes heat with electricity[1] and half were built before 1988. Request service from HVAC contractors working here. Lawrenceville, in Gwinnett County — ZIP 30046, counts 32,822 residents (2025 estimate)[2].
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Lawrenceville at a glance for HVAC
- Population (2025 est.)
- 32,822[2]+7.1% since 2020
- County
- Gwinnett[2]
- Land area
- 13.8 sq mi[3]
- Homes heated with electricity
- 44%[1]the 4th-highest share of the 15 Atlanta-area suburbs we cover
- Homes heated with utility gas
- 53%[1]plus 2% propane/LP
- Heat & excessive-heat days, gwinnett zone
- 0[4]2016–2025
- Winter-storm & freeze days, gwinnett zone
- 10[4]2016–2025; heating demand and freeze-related furnace failures
- Lightning-damage reports within 10 mi
- 6[4]2016–2025; power surges damage HVAC control boards
- Damaging-wind reports within 10 mi
- 95[4]2016–2025; wind-blown debris damages outdoor condenser units
- Homes built before 2000
- 66%[1]of 11,161 housing units
- Median year built
- 1988[1]the 3rd-oldest of the 15 Atlanta-area suburbs we cover
What Lawrenceville's numbers say about HVAC
Lawrenceville is one of the fastest-growing Atlanta-metro suburbs tracked here: 32,822 people (2025 estimate), up 7.1% since 2020[2]. The city spans 13.8 square miles at 2,379 residents per square mile (the 10th densest) and sits entirely in Gwinnett County, served by ZIP code 30046[3].
Only 12% of Lawrenceville's homes were built in 2010 or later, against 66% before 2000[1] — most systems here are past any builder warranty, and older homes often keep their original ductwork.
30046 is the city's single ZIP code[5].
Nearest of the other suburbs we track: Duluth (9.7 mi W), Johns Creek (13.3 mi NW) and Alpharetta (18.0 mi NW)[3].
44% of occupied Lawrenceville homes heat with electricity, 53% with utility gas and 2% with propane[1] — the 4th-highest electric share of the 15 Atlanta-area suburbs we cover; nearby, Duluth (34%), Johns Creek (23%), and Alpharetta (37%) heat electrically. Gas heat means a furnace plus a separate AC condenser.
Gwinnett County forecast zone, 2016–2025: 0 heat or excessive-heat days and 10 winter-storm or hard-freeze days[4].
Storm exposure for HVAC hardware: 6 lightning-damage reports within 10 miles; 95 damaging-wind reports within 10 miles in 2016–2025[4]. Most recent: Jun 17, 2025, 9.9 miles from the city center.
66% of Lawrenceville's 11,161 housing units were built before 2000 and 12% since 2010[1] (pre-2000 share nearby: Duluth (70%), Johns Creek (72%), and Alpharetta (64%)). Older homes often keep original ductwork.
Out of the 15 suburbs on this site, Lawrenceville has the 3rd-oldest housing (by median year built) (1988)[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.
Lawrenceville storm calendar
Within 10 miles of Lawrenceville, 2016–2025: 95 damaging-wind reports and 6 lightning reports[4]. Peak: 62% in June, July, and August. Busiest year 2023 (34). Busiest month January 2023 (13). Latest: damaging-wind report, Jun 17, 2025, 3.1 mi out.
| Month | Damaging wind | Lightning | All |
|---|---|---|---|
| Jan | 13 | – | 13 |
| Feb | 9 | – | 9 |
| Mar | 3 | – | 3 |
| Apr | 2 | – | 2 |
| May | 1 | 1 | 2 |
| Jun | 26 | 2 | 28 |
| Jul | 14 | 2 | 16 |
| Aug | 18 | 1 | 19 |
| Oct | 1 | – | 1 |
| Nov | 1 | – | 1 |
| Dec | 7 | – | 7 |
HVAC help in Lawrenceville: what to do next
AC & heating repair contractors taking requests around Lawrenceville cover ZIP code 30046.
Before you call: repair or replace? what a good hvac visit covers
The Lawrenceville numbers behind this page
| Measure | Lawrenceville | Median of 15 | Difference |
|---|---|---|---|
| Propane / LP heat | 1.6% | 1.2% | about the same |
| Electric heat | 44% | 37% | 8 pts higher |
| Utility-gas heat | 53% | 61% | 8 pts lower |
| Built 2010 or later | 12% | 14% | 1 pts lower |
| Damaging-wind reports (10 mi) | 95 | 100 | 5 fewer |
| Median year built | 1988 | 1994 | 6 years older |
| Built before 2000 | 66% | 66% | same as median |
Sorted by largest difference. Each median is the middle value across the covered Atlanta-area suburbs, from the same sources.
| City | Lightning reports | Damaging-wind reports |
|---|---|---|
| Lawrenceville | 6 | 95 |
| Duluth 9.7 mi | 8 | 95 |
| Johns Creek 13.3 mi | 7 | 92 |
| Alpharetta 18.0 mi | 3 | 83 |
| Dunwoody 18.4 mi | 2 | 132 |
| Roswell 21.4 mi | 2 | 100 |
| Date | Wind | Distance |
|---|---|---|
| Jun 17, 2025 | 55 mph (est.) | 9.9 mi |
| Jun 17, 2025 | 55 mph (est.) | 9.9 mi |
| Jun 17, 2025 | 60 mph (est.) | 4.5 mi |
| Jun 17, 2025 | 60 mph (est.) | 3.1 mi |
| Jun 7, 2025 | 64 mph (est.) | 2.8 mi |
| Dec 29, 2024 | 60 mph (est.) | 2.5 mi |
| Date | Distance |
|---|---|
| Aug 5, 2019 | 4.8 mi |
| Jun 16, 2018 | 9.4 mi |
| May 20, 2018 | 9.8 mi |
| Jul 23, 2017 | 9.5 mi |
| Jul 4, 2017 | 7.3 mi |
| Jun 2, 2016 | 6.7 mi |
| Main heating fuel | Homes | Share | Margin of error |
|---|---|---|---|
| Utility gas | 5,647 | 52.7% | ±659 |
| Electricity | 4,759 | 44.4% | ±615 |
| Bottled or tank gas (propane, butane, etc.) | 171 | 1.6% | ±99 |
| No fuel used | 124 | 1.2% | ±61 |
| Other fuel | 18 | 0.2% | ±30 |
| Built | Units | Share | Margin of error |
|---|---|---|---|
| 2020 or later | 450 | 4.0% | ±217 |
| 2010 to 2019 | 907 | 8.1% | ±268 |
| 2000 to 2009 | 2,462 | 22.1% | ±426 |
| 1990 to 1999 | 1,283 | 11.5% | ±381 |
| 1980 to 1989 | 2,686 | 24.1% | ±409 |
| 1970 to 1979 | 2,145 | 19.2% | ±435 |
| 1960 to 1969 | 677 | 6.1% | ±280 |
| 1950 to 1959 | 305 | 2.7% | ±117 |
| 1940 to 1949 | 166 | 1.5% | ±108 |
| 1939 or earlier | 80 | 0.7% | ±52 |
ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.
| Measure | Value |
|---|---|
| Housing units | 11,161 |
| Detached single-family | 5,808 (52%) |
| Occupied homes | 10,719 |
| Owner-occupied | 5,040 (47%) |
| Renter-occupied | 5,679 (53%) |
| Median home value | $350,600 |
ACS 2020–2024 estimates.
| ZIP (ZCTA) | Share of Lawrenceville's land | Share of the ZIP inside the city |
|---|---|---|
| 30046 | 90% | 77% |
Dated heat and freeze records for the GWINNETT forecast zone: see the county list.
Common Lawrenceville HVAC questions
Are heat pumps common in Lawrenceville?
44% of Lawrenceville homes heat with electricity[1], which means a heat pump or electric resistance heat.
How old are Lawrenceville's homes — and their HVAC systems?
The median home dates to 1988, 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 Lawrenceville ZIP codes are covered?
30046[5], Gwinnett County. Nearby pages: Duluth (9.7 mi), Johns Creek (13.3 mi), and Alpharetta (18.0 mi)[3].
A lot of Lawrenceville homes predate 1980 — what does that mean for HVAC equipment work?
30% of Lawrenceville's housing units were built before 1980, 4.9% before 1960[1] — the 3rd-highest share of the 15 Atlanta-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.
I rent in Lawrenceville. Who arranges the repair?
53% of occupied Lawrenceville homes are rented[1], the highest share of the 15 Atlanta-area suburbs we cover. Tell your landlord or property manager in writing first; your lease says who arranges repairs.
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.