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HVAC permits in Chattanooga, TN

Data through September 2026 · updated 18 Oct 2026

2,483 HVAC permits were issued in Chattanooga, October 2024 through September 2026: about 1,242 a year and 19% of all permits. 1,375 HVAC permits in the last 12 months (Oct 2025–Sep 2026), 24% more than the 1,108 in the 12 months before. The busiest month is September. The usual one took 95 days from issue to the city's final. 37421 has the most, 561.

2,483permits issued
1,375last 12 months
Sepbusiest month
95days, usual issue to final
61%finished
Sep 2026records through

HVAC permits by month

Permits issued each month, October 2024 through September 2026.

Oct 2024: 89Oct2024Nov 2024: 87Dec 2024: 104Jan 2025: 111Jan2025Feb 2025: 70Mar 2025: 88Apr 2025: 67May 2025: 77Jun 2025: 69Jul 2025: 97JulAug 2025: 120Sep 2025: 129Oct 2025: 131Nov 2025: 79Dec 2025: 107Jan 2026: 115Jan2026Feb 2026: 88Mar 2026: 94Apr 2026: 111May 2026: 95Jun 2026: 116Jul 2026: 152JulAug 2026: 142Sep 2026: 145
The same numbers as a table
MonthPermits
Oct 202489
Nov 202487
Dec 2024104
Jan 2025111
Feb 202570
Mar 202588
Apr 202567
May 202577
Jun 202569
Jul 202597
Aug 2025120
Sep 2025129
Oct 2025131
Nov 202579
Dec 2025107
Jan 2026115
Feb 202688
Mar 202694
Apr 2026111
May 202695
Jun 2026116
Jul 2026152
Aug 2026142
Sep 2026145

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When HVAC permits are filed

By calendar month, 100 = an average month (the thin line). September is the busiest (132), February the quietest (76). A busy month at the permit counter usually means a longer wait for a contractor.

January: 109 (100 = an average month)February: 76 (100 = an average month)March: 88 (100 = an average month)April: 86 (100 = an average month)May: 83 (100 = an average month)June: 89 (100 = an average month)July: 120 (100 = an average month)August: 127 (100 = an average month)September: 132 (100 = an average month)132October: 106 (100 = an average month)November: 80 (100 = an average month)December: 102 (100 = an average month)JFMAMJJASOND
The same numbers as a table
MonthIndex
January109
February76
March88
April86
May83
June89
July120
August127
September132
October106
November80
December102

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How long an HVAC permit takes

Permits issued Oct 2024–Sep 2025, at least 12 months before the file ends. Usual days is the middle permit among the 671 with a final date.

MeasureValue
Permits issued Oct 2024–Sep 20251,108
Finished60.6%
Usual days, issue to final95
Middle half, days69–122

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ZIP codes with the most HVAC permits

Counted at the property's ZIP code. Share is the part of the city's 2,483 HVAC permits.

ZIP codePermitsShare
3742156123%
3734327711%
3740525610%
374042159%
374061958%
374101606%
374191556%
374111466%
374161205%
37415954%

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Most active contractors by permits filed

The contractors named on the most HVAC permits in the City of Chattanooga Hub (ChattaData) file, October 2024 through September 2026, with 5 or more each. Share is the part of all 2,483 HVAC permits; 87% of them name a contractor we can show. This is volume, not quality: more permits doesn't mean better work. Individuals' names, owner-builders and blanks are left out.

ContractorPermitsShare
Inner City Electrical Heating and Air Co LLC1697%
Romanoff HVAC1506%
One Hour Heating and Air Conditioning1285%
Champion Mechanical, LLC1125%
Airsystems Unlimited, LLC1074%
Mitchell Air Systems874%
Eldridge Service783%
Baileys Heat and Air683%
Titan Heating and Air, LLC673%
Residential Air622%

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Guides for this kind of work

All guides →

Other kinds of work here

Plumbing (4,073)Electrical (3,522)New homes (1,316)Remodels & repairs (1,082)Demolition (285)Additions (280)

How Chattanooga compares with other cities

From our cross-city data studies: the same measure, read the same way, for every city we cover.

How these numbers are made

Source: City of Chattanooga Hub (ChattaData), All Permits (nightly CSV extract, ArcGIS item 9937e99e93de467eae5f592061c2672c), read 18 Oct 2026. We count permits issued October 2024 through September 2026; denied and withdrawn permits are left out.

Residential permits the City of Chattanooga Land Development Office issues inside the city: building, repair and replace, modification and demolition permits for homes, and electrical, plumbing, mechanical and gas permits the city marks residential. Commercial, industrial and institutional permits, street cuts, land disturbing, low voltage permits and certificates of occupancy in the same file are not counted. Unincorporated Hamilton County, East Ridge, Red Bank, Signal Mountain and the other towns run their own permit offices and are not in this file.

  • The file names a contractor company on about seven in ten of the permits counted here, and on none before 2020. The contractor table counts permits filed per firm among those; it does not rate, rank or compare their work.
  • The file has a declared cost on only a few commercial permits, so we show no costs.
  • The file's completion date is empty. A final date here is the date the city last changed the permit's status, on permits whose status is Complete. A permit with any other status (Active or Stopped) counts as open; the file has no expired status.
  • In mid-2025 the city renamed several permit types (for example 'Residential Building Permit Old' and 'Residential Modification Permit' became 'Residential Building Permit' and 'Residential Repair Replace'); both names are counted the same way.
  • A new house gets separate building, electrical, plumbing, mechanical and gas permits, so one project can count several times, once under each kind of work.

Counts are permits, not jobs: one job can need several permits. Nobody paid to be on this page and nobody can. Sources and definitions →

Cite this page

Free to reuse with attribution (CC BY 4.0). Please credit Contractor Records and link to this page. Suggested citation:

Contractor Records, "HVAC permits in Chattanooga, TN", https://contractorrecords.com/chattanooga/hvac-permits, data through September 2026, from the City of Chattanooga Land Development Office building-permit records.

Link to a table: By month · Season · Days to final · By ZIP code · Most active contractors by permits filed.

Download the tables (CSV): HVAC permits by month · HVAC permits by calendar month (index) · HVAC permits: days to final · HVAC permits by ZIP code · Most active contractors by permits filed.

Common questions

  • How many HVAC permits does Chattanooga issue a year?About 1,242 a year in Chattanooga: 2,483 permits issued October 2024 through September 2026, 1,375 of them in the last 12 months.
  • How long does an HVAC permit take in Chattanooga?The usual one took 95 days from issue to the city's final inspection, and the middle half took 69 to 122 days (671 permits issued Oct 2024–Sep 2025 that reached a final). The wait to get the permit issued is not in this file.
  • When do people in Chattanooga file the most HVAC permits?September (132 against an average month of 100); February is the quietest (76). If you can choose, a quiet month at the permit counter can mean contractors have more room in their schedules.
  • Which ZIP code has the most HVAC permits in Chattanooga?37421, with 561 of the 2,483 (23%); then 37343 (277).
Chattanooga permit data →Chattanooga permit statistics →How long permits take in Chattanooga →Browse Chattanooga HVAC permits →