AC & heating repair · Dunwoody, Georgia

AC repair and HVAC service in Dunwoody, GA

AC quit, heat pump struggling, or a system near the end of its life? In Dunwoody, 41% of homes heat with electricity^[1] and half were built before 1984. Request service from HVAC contractors working here. Dunwoody, in DeKalb County — ZIPs 30338, 30360, 30346, counts 51,792 residents (2025 estimate)^[2].

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Dunwoody HVAC snapshot: the key figures

Population (2025 est.): 51,792^[2]+0.3% since 2020
County: DeKalb^[2]
Land area: 13.0 sq mi^[3]
Population density: 3,986 / sq mi^[2]^[3]
Homes heated with electricity: 41%^[1]the 6th-highest share of the 15 Atlanta-area suburbs we cover
Homes heated with utility gas: 57%^[1]plus 1% propane/LP
Lightning-damage reports within 10 mi: 2^[4]2016–2025; power surges damage HVAC control boards
Damaging-wind reports within 10 mi: 132^[4]2016–2025; wind-blown debris damages outdoor condenser units
Homes built before 2000: 74%^[1]of 23,491 housing units
Median year built: 1984^[1]the oldest of the 15 Atlanta-area suburbs we cover

What Dunwoody's numbers say about HVAC

Dunwoody is one of the most established suburbs tracked here — 51,792 people (2025 estimate), up just 0.3% since 2020^[2]. On the map that's 13.0 square miles holding 3,986 residents per square mile, the 1st densest of the suburbs here; it sits entirely in DeKalb County, with ZIP codes 30338, 30360, 30346^[3].

Only 7% of Dunwoody's homes were built in 2010 or later, against 74% before 2000^[1] — most systems here are past any builder warranty, and older homes often keep their original ductwork.

3 ZIP codes cover Dunwoody — 30338 (74% of the city's land), 30360 (17% of the city's land), 30346 (8% of the city's land)^[5].

The tracked suburbs closest by are Sandy Springs (3.3 mi W), Roswell (7.1 mi N) and Johns Creek (8.9 mi NE)^[3].

41% of occupied Dunwoody homes heat with electricity, 57% with utility gas^[1] — the 6th-highest electric share of the 15 Atlanta-area suburbs we cover; nearby, Sandy Springs (46%), Roswell (27%), and Johns Creek (23%) heat electrically. Gas heat means a furnace plus a separate AC condenser.

Storm exposure for HVAC hardware: 2 lightning-damage reports within 10 miles; 132 damaging-wind reports within 10 miles in 2016–2025^[4]. Most recent: Nov 25, 2025, 8.0 miles from the city center.

74% of Dunwoody's 23,491 housing units were built before 2000 and 7% since 2010^[1] (pre-2000 share nearby: Sandy Springs (68%), Roswell (75%), and Johns Creek (72%)). Older homes often keep original ductwork.

Out of the 15 suburbs on this site, Dunwoody has the oldest housing (by median year built) (1984)^[1] and the lowest share of homes built since 2010 (7%)^[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.

Illustration, not to scale. 2 lightning-damage reports within 10 miles and 132 damaging-wind reports in 2016–2025.

Dunwoody storm calendar

Within 10 miles of Dunwoody, 2016–2025: 132 damaging-wind reports and 2 lightning reports^[4]. Peak: 63% in June, July, and August. Busiest year 2024 (31). Busiest month August 2023 (13). Latest: damaging-wind report, Nov 25, 2025, 8.0 mi out.

Dunwoody, 2016–2025
Month	Damaging wind	Lightning	All
Jan	8	–	8
Feb	12	–	12
Mar	4	–	4
Apr	11	–	11
May	5	–	5
Jun	25	–	25
Jul	35	2	37
Aug	23	–	23
Sep	2	–	2
Oct	1	–	1
Nov	2	–	2
Dec	4	–	4

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

Finding HVAC help around Dunwoody

Requests go to AC & heating repair contractors serving the Dunwoody area — ZIP codes 30338, 30360, 30346.

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Before you call: repair or replace? what a good hvac visit covers

Dunwoody by the numbers

Dunwoody against the typical suburb we cover (median of 15)^[1]^[4]
Measure	Dunwoody	Median of 15	Difference
Built 2010 or later	7%	14%	7 pts lower
Damaging-wind reports (10 mi)	132	100	32 more
Propane / LP heat	1.0%	1.2%	about the same
Electric heat	41%	37%	5 pts higher
Built before 2000	74%	66%	9 pts higher
Utility-gas heat	57%	61%	3 pts lower
Median year built	1984	1994	10 years older

Largest differences first. Medians are the middle value across the covered Atlanta-area suburbs, from the same sources.

How Dunwoody compares with its nearest neighbours^[4]^[3]
City	Lightning reports	Damaging-wind reports
Dunwoody	2	132
Sandy Springs 3.3 mi	2	133
Roswell 7.1 mi	2	100
Johns Creek 8.9 mi	7	92
Alpharetta 9.2 mi	3	83
Duluth 10.2 mi	8	95

Most recent damaging-wind reports within 10 miles^[4]
Date	Wind	Distance
Nov 25, 2025	45 mph (est.)	8.0 mi
Jul 18, 2025	60 mph (est.)	4.3 mi
Jul 18, 2025	60 mph (est.)	4.4 mi
Jun 26, 2025	69 mph (est.)	3.4 mi
Jun 17, 2025	60 mph (est.)	3.4 mi
Jun 7, 2025	60 mph (est.)	8.8 mi

Lightning-damage reports within 10 miles^[4]
Date	Distance
Jul 14, 2017	6.0 mi
Jul 14, 2017	6.2 mi

How Dunwoody's 21,225 occupied homes are heated^[1]
Main heating fuel	Homes	Share	Margin of error
Utility gas	12,161	57.3%	±777
Electricity	8,790	41.4%	±830
Bottled or tank gas (propane, butane, etc.)	207	1.0%	±125
No fuel used	67	0.3%	±60

When Dunwoody's 23,491 housing units were built^[1]
Built	Units	Share	Margin of error
2020 or later	47	0.2%	±40
2010 to 2019	1,505	6.4%	±315
2000 to 2009	4,486	19.1%	±475
1990 to 1999	3,896	16.6%	±466
1980 to 1989	3,205	13.6%	±589
1970 to 1979	6,548	27.9%	±724
1960 to 1969	3,197	13.6%	±378
1950 to 1959	445	1.9%	±186
1940 to 1949	44	0.2%	±62
1939 or earlier	118	0.5%	±95

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

Dunwoody housing and households^[1]
Measure	Value
Housing units	23,491
Detached single-family	10,402 (44%)
Occupied homes	21,225
Owner-occupied	11,934 (56%)
Renter-occupied	9,291 (44%)
Median home value	$602,900

ACS 2020–2024 estimates.

ZIP code areas covering Dunwoody^[5]
ZIP (ZCTA)	Share of Dunwoody's land	Share of the ZIP inside the city
30338	74%	98%
30360	17%	36%
30346	8%	100%

Common Dunwoody HVAC questions

Are heat pumps common in Dunwoody?

41% of Dunwoody homes heat with electricity^[1], which means a heat pump or electric resistance heat.

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

The median home dates to 1984, and 7% 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 Dunwoody ZIP codes are covered?

30338, 30360, and 30346^[5], DeKalb County. Nearby pages: Sandy Springs (3.3 mi), Roswell (7.1 mi), and Johns Creek (8.9 mi)^[3].

A lot of Dunwoody homes predate 1980 — what does that mean for HVAC equipment work?

44% of Dunwoody's housing units were built before 1980, 2.6% before 1960^[1] — the 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 Dunwoody. Who arranges the repair?

44% of occupied Dunwoody homes are rented^[1], the 5th-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

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

Month	Damaging wind	Lightning	All
Jan	8	–	8
Feb	12	–	12
Mar	4	–	4
Apr	11	–	11
May	5	–	5
Jun	25	–	25
Jul	35	2	37
Aug	23	–	23
Sep	2	–	2
Oct	1	–	1
Nov	2	–	2
Dec	4	–	4

Month	Damaging wind	Lightning	All
Jan	8	–	8
Feb	12	–	12
Mar	4	–	4
Apr	11	–	11
May	5	–	5
Jun	25	–	25
Jul	35	2	37
Aug	23	–	23
Sep	2	–	2
Oct	1	–	1
Nov	2	–	2
Dec	4	–	4

Month	Damaging wind	Lightning	All
Jan	8	–	8
Feb	12	–	12
Mar	4	–	4
Apr	11	–	11
May	5	–	5
Jun	25	–	25
Jul	35	2	37
Aug	23	–	23
Sep	2	–	2
Oct	1	–	1
Nov	2	–	2
Dec	4	–	4