What a hvac website in Los Angeles has to show: the license rules that apply, the counties you can serve, and a free audit of the site you have now.
Free, on this page. Or get your free demo. Nothing to pay until it's delivered.
Businesses: plumbing, heating and air-conditioning contractors with paid staff in the Los Angeles-Long Beach-Anaheim, CA metro. Census County Business Patterns, 2023. Counties: Census metro and county estimates, 2024.
License
What Los Angeles asks of a hvac business, and where your website comes in.
Checked 2026-10-05 at each source. Not legal advice: rules change, so check with the board before you rely on one.
State · California Contractors State License Board (CSLB)
Heating and cooling work is the C-20 classification, and the license number goes on your ads.
“Every person licensed pursuant to this chapter shall include his license number in: (a) all construction contracts; (b) subcontracts and calls for bid; and (c) all forms of advertising”
What it covers
“A warm-air heating, ventilating and air-conditioning contractor fabricates, installs, maintains, services and repairs warm-air heating systems and water heating heat pumps, complete with warm-air appliances; ventilating systems complete with blowers and plenum chambers; air-conditioning systems complete with air-conditioning unit; and the ducts, registers, flues, humidity and thermostatic controls and air filters in connection with any of these systems.”
California · every trade
CSLB counts any website or post that asks for work on the internet as advertising.
CSLB, Advertising Guidelines for ContractorsCalifornia · every trade
Advertise only the work your classification covers, and never say you are bonded.
CSLB, Advertising Guidelines for ContractorsOn your website
Put the number in the footer of every page and beside every quote form, under the business name it is issued to. Read every page as an ad: that is the safe reading of these rules.
Service area
The Los Angeles-Long Beach-Anaheim, CA metro: 2 counties.
California licenses contractors state-wide through the CSLB, so these rules hold across both counties of the metro.
Census metro and county estimates, 2024Census County Business Patterns, 2023, by county
Plumbing, heating and air-conditioning contractors with paid staff, by county, 2023.
Free audit
Type your website and get a plain report, written for hvac businesses. Then compare it with the license and service area notes above.
Written for heating and cooling businesses.
Every finding is something we measured on your site. Nothing is guessed.
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More pages
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HVAC, the full pageNext step
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