HVAC marketing agency: websites and search planned around California's contractor ad rules

What does an HVAC marketing agency do?

An HVAC marketing agency plans and runs the ways a heating and cooling company wins work online: the website, search results, the Google Business Profile, and the systems that take requests and bookings. Ours covers three parts. We build the website, with a page for each service your license covers. We run search, including local search and your Business Profile, and we check each month how often AI answers mention you. And we build systems for the office, such as sending each request to the right person and letting customers book from the open times you set.

We don’t manage paid search or social ads, so if you run them, your team or an ads agency keeps them going. For a heating and cooling company, what we would build starts from the state’s rules, because in California the website, the listings and the trucks all count as advertising.

Which rules shape what an HVAC company can say in California?

The Contractors State License Board (CSLB) publishes the Contractors State License Law, in the Business and Professions Code (B&P), together with its own regulations in Title 16 of the California Code of Regulations (16 CCR). Its 2026 law book holds the sections in the first four parts below, and each one changes what a site, a listing or a truck can say. The last two parts come from EPA and the California Energy Commission, and they shape what a replacement or changeout page can claim.

The license number goes on every ad, the website included

B&P 7030.5 requires a contractor to include its license number in all construction contracts, in subcontracts and calls for bid, and in all forms of advertising. CSLB’s advertising guide names “any website or post that solicits business on the Internet” as a form of advertising, and it puts the civil penalty for leaving the number off at between $100 and $1,000 for a first offense. On a site we would build, the number sits in the footer of every page and on the about and contact pages.

Listings and trucks count too

16 CCR 861 defines advertising widely. It includes “lettering on vehicles registered in this or any other state,” “any electronic transmission,” and “any form of directory under any listing denoting ‘Contractor’.” So a directory profile or a social post asking for work carries the number as well. For vehicles, CSLB’s guide says every contractor outside the C-36, C-45 and C-57 classes must show the business name and license number on each commercially registered vehicle, in a clearly visible place, in type of at least 72 points or letters at least three-quarters of an inch high and wide.

Advertise only the classifications you hold

B&P 7027.1 makes it a misdemeanor to advertise work unless you hold a valid license in the classification advertised, with a fine of $700 to $1,000, and it names electronic transmissions and directory listings among the ways to advertise. The C-20 classification, defined in 16 CCR 832.20, covers warm-air heating systems and water heating heat pumps, ventilating systems, air-conditioning systems, and the ducts, registers, flues, humidity and thermostatic controls and air filters that go with them, and it includes systems that use solar energy. CSLB’s guide shows how the rule works: a C-29 masonry contractor can’t advertise electrical work without also holding a C-10 electrical license. So before a page offers work outside C-20, such as plumbing or electrical jobs, the license needs that classification too.

Bonding and insurance wording

B&P 7027.4 makes two things a cause for discipline: advertising insurance without naming its type, such as commercial general liability insurance or workers’ compensation insurance, and advertising “bonded” when the reference is to the license bond or a disciplinary bond. CSLB’s guide puts it more plainly: the law prevents a contractor from noting in advertising that it is bonded. Workers’ compensation has a rule of its own. Until January 1, 2028, a contractor with no employees files an exemption from the workers’ compensation requirement, unless it holds one of the classifications CSLB lists as requiring that insurance anyway, and C-20 is one of them (B&P 7125). The version of 7125 that takes effect on January 1, 2028 keeps the exemption only for a joint venture with no employees.

New systems and the refrigerant change

EPA’s technology transitions rules set a global warming potential limit of 700 for the refrigerant in new residential and light commercial air conditioning and heat pump systems, such as mini-splits and unitary systems, with an installation compliance date of January 1, 2025. In a rule it finalized on May 21, 2026, EPA removed the January 1, 2026 installation compliance date for this equipment where it uses a refrigerant above the 700 limit and was made in or imported into the US before January 1, 2025, and it allows that pre-2025 inventory to be installed until supply runs out. EPA’s table now shows no installation date for systems whose specified components were all made or imported before January 1, 2025. Components used to repair existing systems aren’t subject to these restrictions. A replacement page can explain the change with its dates and a link to EPA’s page. It should never tell a homeowner that a working system has to be replaced because of it.

Permits and energy testing

The California Energy Commission says that from January 1, 2026, its HERS Program no longer supports an Energy Code compliance demonstration program, and that the field verification and diagnostic testing provisions now appear in the Energy Code (Title 24, Part 6, and associated administrative regulations in Part 1). Depending on the job, HERS testing may be mandatory, and properly permitted work triggers any testing that’s needed. So a changeout page says a permit and testing may apply and asks the homeowner to talk it through with you. It never says a job needs no permit.

Which marketing channels does an HVAC company use, and who runs each?

A heating and cooling company usually runs several channels at once. The table sets out what each one does, the rule that applies to it and who would handle it if you worked with us.

What should an HVAC website show?

It should show what a homeowner wants settled before calling. That means a page for each service your classifications cover, the towns you serve, how a no-heat or no-cooling call is handled, your maintenance plans and the license number on every page. Rebates and financing appear only for programs you take part in, named the way each program names itself, with a link to its page and no promise of savings or eligibility. Technician credentials, such as EPA Section 608 certification, can go on the site once you supply them, and a careers page earns its place when you’re hiring.

The page plan, the booking setup and what a build involves are on HVAC website design.

How does search work for heating and cooling companies?

Google says local results are mainly based on relevance, distance and popularity, and that there’s no way to request or pay for a better local ranking. A company with no storefront that travels to customers is a service-area business in Google’s terms: one profile with a service area, and the address hidden. Reviews count toward prominence, which Google defines as how well-known a business is, and offering an incentive in exchange for one is prohibited. Pages for your busy seasons are worth having ready before each one starts.

The monthly work, what it includes and how it’s reported are on HVAC SEO.

Where do booking and office systems fit?

Behind the website, the job is getting each request to someone who can act on it. For a heating and cooling company, we would build routing that sends each request from the website or the inbox to the person who handles that kind of job, so a breakdown and a replacement estimate don’t wait in the same queue. Customers could book tune-ups, maintenance plan visits and replacement estimates themselves, from the open times you set. A breakdown is better handled by a call or a request someone on your team reads straight away.

An AI step can sort incoming requests by type, such as repair, replacement or maintenance, or draft a first reply for your office to check before it goes out. Each request would carry a note of where it came from, kept with the contact. If your office already runs dispatch and invoicing in field service software, name it on the call.

What should you check before you hire an agency?

Start with how it treats the state’s rules, because they reach every page it would publish for you. Ask whether every page and listing will carry your license number, whether the services offered will stay inside your classifications, and how the site will word bonding and insurance. Ask who checks refrigerant, permit and rebate wording against the source’s own page, and who approves each page before it goes live.

Then the working basics. Ask whose name the domain is registered in; it should be yours. Ask what the monthly report shows first, and how requests are counted against booked jobs. Ask what the agency doesn’t do, so nothing falls between you and it.

Google’s guide to hiring an SEO adds a warning about firms that email you out of the blue, and a line worth remembering: “No one can guarantee a #1 ranking on Google.”

How do you measure what HVAC marketing brings in?

Start with requests and booked jobs, then look at visits. On a site we build, Google Analytics 4, Google Search Console and Bing Webmaster Tools are connected from launch day, so you can see which searches lead to your pages and what visitors do there. Monthly search work ends each month with a one-page report on the last day that starts with leads, and a review each quarter.

Form requests can be counted on the site. Calls need a count of their own, so ask each caller how they found you and keep a simple log by source. What a website costs is on website design cost, and what monthly search work costs is on SEO pricing.

How does working with us start?

With a 15-minute call. You talk with Nicolas Perez or Noah Alvarez, our co-founders, about your company, the towns you serve and the work you want more of. Bring your license number and classifications and the address of your current site. A written proposal follows.

Formed in 2023, Midnite Systems works with businesses across the US from our office in Valencia. Book a 15-minute call when you’re ready.