HVAC Marketing in St. Louis
St. Louis heating and cooling demand runs on two engines: furnaces through a January that averages about 32 degrees, and air conditioners through Julys that average 15.9 days of 90-degree heat. We help HVAC contractors in the city and both neighboring counties stay visible for both seasons, with a page for each municipality you serve, campaigns that ramp up before the weather turns, and follow-up that books the visit fast.
Heating and cooling loads here
Both seasons carry weight
In a typical year Lambert racks up 4,433 degree days of heating demand and 1,713 of cooling demand, according to normals the National Weather Service publishes for 1991 through 2020. January alone accounts for about 1,020 of the heating total, and July for 476 of the cooling. Air conditioning here is a full second season, not an afterthought, so we budget for both halves of the year.
A gas furnace market
The 2020 to 2024 Census survey found utility gas heating 308,809 of St. Louis County's 413,849 occupied homes, about three in four, and 96,855 of the city's 144,891. Pair that with a county housing stock whose median build year is 1969, and furnace replacements, gas safety checks and duct work make up a large share of winter calls.
Licensed by the county
St. Louis County licenses mechanical contractors through its Board of Examiners for Mechanical Licensing, publishes a list of certified mechanical contractors eligible to work there, and will not hand a mechanical permit to anyone without an active County license. Journeyman renewals carry continuing education requirements. Pointing customers to your entry on that list is an easy way to prove you are qualified.
What books HVAC calls
Answering on cold nights
A dead furnace on a 20-degree night means calls to several companies. The contractor who answers first and gives a firm arrival window usually wins the job.
Proof of County certification
Putting your St. Louis County mechanical license and permit history on the site reassures careful homeowners and property managers weighing several bids.
Agreements for the shoulder months
Spring and fall maintenance plans keep technicians busy between extremes, provided the reminders go out before the first cold snap or heat wave.
Our HVAC marketing services
Areas we serve
We can promote furnace and AC crews to homes and businesses in neighborhoods and suburbs like these:
- Downtown St. Louis
- Clayton
- Central West End
- Soulard
- The Hill
- Kirkwood
- Webster Groves
- Chesterfield
- St. Charles
- University City
Questions and answers
Late September or early October. January averages 32.1 degrees at Lambert under the 1991 to 2020 normals, but the first cold nights arrive weeks earlier, and contractors already ranking with fresh reviews when furnaces first kick on collect the early calls.
Yes. The County's Board of Examiners for Mechanical Licensing oversees HVAC licensing, and the County will not issue a mechanical permit to a contractor without an active County license. Inside city limits, the City of St. Louis has a separate contractor business license and its own permit desk.
Yes. A normal year brings 1,713 cooling degree days at Lambert, and July normally delivers 15.9 days with highs of 90 or more. AC repair, replacement and indoor air quality work deserve their own campaigns from May through August.
Sources
- National Weather Service St. Louis: annual climate report for 2025, with 1991 to 2020 normals
- National Weather Service St. Louis: monthly climate report, January 2026
- National Weather Service St. Louis: monthly climate report, July 2026
- U.S. Census Bureau, American Community Survey 2020 to 2024, Table B25040: house heating fuel, St. Louis area
- U.S. Census Bureau, American Community Survey 2020 to 2024, Table B25035: median year structure built, St. Louis area
- St. Louis County: Mechanical Licensing
- St. Louis County Department of Transportation and Public Works: mechanical, electrical and plumbing permit guide
- City of St. Louis License Collector: Contractor business license application
Checked 2026-10-31.