AC & heating repair · Kennesaw, Georgia

AC repair and HVAC service in Kennesaw, GA

AC quit, heat pump struggling, or a system near the end of its life? In Kennesaw, 30% of homes heat with electricity^[1] and half were built before 1998. Request service from HVAC contractors working here. Kennesaw, in Cobb County — ZIPs 30144, 30152, counts 37,970 residents (2025 estimate)^[2].

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The Kennesaw HVAC picture in brief

Population (2025 est.): 37,970^[2]+14.3% since 2020
County: Cobb^[2]
Land area: 9.8 sq mi^[3]
Population density: 3,887 / sq mi^[2]^[3]
Homes heated with electricity: 30%^[1]the 3rd-lowest share of the 15 Atlanta-area suburbs we cover
Homes heated with utility gas: 67%^[1]plus 1% propane/LP
Heat & excessive-heat days, cobb zone: 0^[4]2016–2025
Winter-storm & freeze days, cobb zone: 6^[4]2016–2025; heating demand and freeze-related furnace failures
Lightning-damage reports within 10 mi: 4^[4]2016–2025; power surges damage HVAC control boards
Damaging-wind reports within 10 mi: 96^[4]2016–2025; wind-blown debris damages outdoor condenser units
Homes built before 2000: 55%^[1]of 14,380 housing units
Median year built: 1998^[1]the 5th-newest of the 15 Atlanta-area suburbs we cover

What Kennesaw's numbers say about HVAC

Kennesaw is one of the fastest-growing Atlanta-metro suburbs tracked here: 37,970 people (2025 estimate), up 14.3% since 2020^[2]. The city spans 9.8 square miles at 3,887 residents per square mile (the 2nd densest) and sits entirely in Cobb County, served by ZIP codes 30144, 30152^[3].

Only 14% of Kennesaw's homes were built in 2010 or later, against 55% before 2000^[1] — most systems here are past any builder warranty, and older homes often keep their original ductwork.

Mail to Kennesaw goes through 2 ZIP codes — 30144 (59% of the city's land), 30152 (38% of the city's land)^[5].

The closest tracked neighbours are Marietta (6.6 mi SE), Woodstock (7.9 mi NE) and Smyrna (12.8 mi SE)^[3].

30% of occupied Kennesaw homes heat with electricity, 67% with utility gas and 1% with propane^[1] — the 3rd-lowest electric share of the 15 Atlanta-area suburbs we cover; nearby, Marietta (37%), Woodstock (42%), and Smyrna (36%) heat electrically. Gas heat means a furnace plus a separate AC condenser.

Cobb County forecast zone, 2016–2025: 0 heat or excessive-heat days and 6 winter-storm or hard-freeze days^[4].

Storm exposure for HVAC hardware: 4 lightning-damage reports within 10 miles; 96 damaging-wind reports within 10 miles in 2016–2025^[4]. Most recent: Jun 17, 2025, 4.3 miles from the city center.

55% of Kennesaw's 14,380 housing units were built before 2000 and 14% since 2010^[1] (pre-2000 share nearby: Marietta (75%), Woodstock (27%), and Smyrna (64%)). Older homes often keep original ductwork.

Out of the 15 suburbs on this site, Kennesaw has the 3rd-lowest electric-heat share (30%)^[1] and the 3rd-highest gas-heat share (67%)^[1].

How air moves through a central system

How the loop runs: return duct to filter to air handler to supply ducts. A dirty filter slows everything downstream.

Illustration, not to scale. The local workload: 0 heat or excessive-heat days and 6 winter-storm or freeze days in 2016–2025 — filters, coils and capacitors age faster under long cooling seasons. 4 lightning-damage reports within 10 miles and 96 damaging-wind reports over the same span.

Kennesaw storm calendar

Within 10 miles of Kennesaw, 2016–2025: 96 damaging-wind reports and 4 lightning reports^[4]. Peak: 70% in June, July, and August. Busiest year 2022 (17). Busiest month July 2022 (10). Latest: damaging-wind report, Jun 17, 2025, 4.3 mi out.

Kennesaw, 2016–2025
Month	Damaging wind	Lightning	All
Jan	4	–	4
Feb	5	–	5
Mar	8	–	8
Apr	2	–	2
May	6	–	6
Jun	31	–	31
Jul	25	3	28
Aug	11	–	11
Sep	2	1	3
Dec	2	–	2

Darker squares, more reports. NOAA Storm Events Database^[4].

Get HVAC help in Kennesaw

AC & heating repair contractors taking requests around Kennesaw cover ZIP codes 30144, 30152.

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Kennesaw by the numbers

Kennesaw against the typical suburb we cover (median of 15)^[1]^[4]
Measure	Kennesaw	Median of 15	Difference
Electric heat	30%	37%	7 pts lower
Built before 2000	55%	66%	11 pts lower
Utility-gas heat	67%	61%	7 pts higher
Damaging-wind reports (10 mi)	96	100	4 fewer
Propane / LP heat	1.2%	1.2%	about the same
Median year built	1998	1994	4 years newer
Built 2010 or later	14%	14%	same as median

Biggest gaps first. Medians are middle values across the Atlanta-area suburbs we cover, drawn from the same sources.

How Kennesaw compares with its nearest neighbours^[4]^[3]
City	Freeze days	Lightning reports	Damaging-wind reports
Kennesaw	6	4	96
Marietta 6.6 mi	6	0	76
Woodstock 7.9 mi	8	3	114
Smyrna 12.8 mi	6	2	115
Roswell 15.3 mi	—	2	100
Sandy Springs 15.7 mi	—	2	133

Most recent damaging-wind reports within 10 miles^[4]
Date	Wind	Distance
Jun 17, 2025	49 mph (est.)	4.3 mi
Jun 14, 2025	49 mph (est.)	3.8 mi
Jun 7, 2025	60 mph (est.)	7.0 mi
Jun 7, 2025	60 mph (est.)	5.2 mi
Jun 7, 2025	60 mph (est.)	7.4 mi
May 25, 2025	60 mph (est.)	6.6 mi

Lightning-damage reports within 10 miles^[4]
Date	Distance
Sep 12, 2023	8.5 mi
Jul 30, 2019	7.7 mi
Jul 14, 2017	7.7 mi
Jul 31, 2016	4.1 mi

How Kennesaw's 13,554 occupied homes are heated^[1]
Main heating fuel	Homes	Share	Margin of error
Utility gas	9,108	67.2%	±525
Electricity	4,023	29.7%	±464
No fuel used	229	1.7%	±247
Bottled or tank gas (propane, butane, etc.)	166	1.2%	±99
Wood	28	0.2%	±42

When Kennesaw's 14,380 housing units were built^[1]
Built	Units	Share	Margin of error
2020 or later	280	1.9%	±117
2010 to 2019	1,667	11.6%	±363
2000 to 2009	4,531	31.5%	±512
1990 to 1999	4,376	30.4%	±456
1980 to 1989	1,954	13.6%	±347
1970 to 1979	615	4.3%	±187
1960 to 1969	657	4.6%	±202
1950 to 1959	215	1.5%	±82
1940 to 1949	14	0.1%	±23
1939 or earlier	71	0.5%	±55

ACS 2020–2024 estimates; margins of error are the Census Bureau's 90% intervals.

Kennesaw housing and households^[1]
Measure	Value
Housing units	14,380
Detached single-family	8,335 (58%)
Occupied homes	13,554
Owner-occupied	8,753 (65%)
Renter-occupied	4,801 (35%)
Median home value	$335,400

ACS 2020–2024 estimates.

ZIP code areas covering Kennesaw^[5]
ZIP (ZCTA)	Share of Kennesaw's land	Share of the ZIP inside the city
30144	59%	26%
30152	38%	16%

Dated heat and freeze records for the COBB forecast zone: see the county list.

Kennesaw HVAC questions

Are heat pumps common in Kennesaw?

30% of Kennesaw homes heat with electricity^[1], which means a heat pump or electric resistance heat.

How old are Kennesaw's homes — and their HVAC systems?

The median home dates to 1998, and 14% 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 Kennesaw ZIP codes are covered?

30144 and 30152^[5], Cobb County. Nearby pages: Marietta (6.6 mi), Woodstock (7.9 mi), and Smyrna (12.8 mi)^[3].

Sources

Data pulled Sep 28, 2026. Full citations and method.

Month	Damaging wind	Lightning	All
Jan	4	–	4
Feb	5	–	5
Mar	8	–	8
Apr	2	–	2
May	6	–	6
Jun	31	–	31
Jul	25	3	28
Aug	11	–	11
Sep	2	1	3
Dec	2	–	2

Month	Damaging wind	Lightning	All
Jan	4	–	4
Feb	5	–	5
Mar	8	–	8
Apr	2	–	2
May	6	–	6
Jun	31	–	31
Jul	25	3	28
Aug	11	–	11
Sep	2	1	3
Dec	2	–	2

Month	Damaging wind	Lightning	All
Jan	4	–	4
Feb	5	–	5
Mar	8	–	8
Apr	2	–	2
May	6	–	6
Jun	31	–	31
Jul	25	3	28
Aug	11	–	11
Sep	2	1	3
Dec	2	–	2