This is not legal, tax, or insurance advice. Read the official pages linked here. Partner offers are optional and labeled.
Heating carries the winter and cooling is no longer optional in a remodel. Basements and older ductwork change the diagnosis. Split repair from replacement on the page. In St. Louis, the housing decides the visit: brick houses and basements in the city and close-in suburbs, with a separate newer stock in St. Charles. The weather on the truck is humid summers, cold winters, ice, tornado and hail risk, and clay that moves with moisture. Central West End, Soulard, and Clayton are worth naming only when they are real stops. Kirkwood and St. Charles are a different drive until you can reach them the same day. City of St. Louis permits is the local counter to ask when the job needs a permit or a city registration. This page names that office. It does not invent a fee. The Illinois side of the metro is a different state license. This page is about the Missouri side: the city, Clayton, Kirkwood, and St. Charles. Do not imply one license covers both banks of the river. City customers want a crew that can work an old brick house. Suburban customers want a crew that shows up inside a normal window. Those are different promises.
brick houses and basements in the city and close-in suburbs, with a separate newer stock in St. Charles humid summers, cold winters, ice, tornado and hail risk, and clay that moves with moisture No-cool or no-heat diagnosis, the repair, and a replacement only after you have seen the equipment. In St. Louis, MO, list Central West End and St. Charles together only if one crew really covers both.
Start the route in Central West End, Soulard, and Clayton. Add Kirkwood and St. Charles when you can reach them the same day. City customers want a crew that can work an old brick house. Suburban customers want a crew that shows up inside a normal window. Those are different promises.
The Missouri guide has the filing office. This page is the local version: what the first jobs are, which permit counter to call, and how to price a day here.
Some boxes are labeled Partner. ServiceBase has not joined those programs. The links go to each company's own homepage, not a tracking link. If a program later approves us, the address will change and we may earn a commission. You can file, insure, and bank anywhere. Official government links are not partner links. Nothing on this page is a discount code.
$500 in free advertising when you launch
Keep the checklist on your account
The guide stays public. An account saves your state, city, and trade, and lets you mark each filing as you go. The advertising credit is reserved when you register. It can be spent after the free website is live.
HVAC licenses are usually held by a person who qualifies the company. A sole proprietorship works when that person is you. An LLC works when the board lets the company hold the registration with you as qualifier. Read the mechanical or air-conditioning section, not a general contractor page from another trade. Form the company before the EIN if you are filing an LLC. The structure does not let you sell replacements without the license.
We do not have a filing fee for Missouri that we are willing to print. Use the SBA lookup, choose Missouri, and read the fee on the state office's own page. Sole proprietors who operate under their own name often skip this filing. Confirm that on the same site.
If your customers are in St. Louis, the registered-agent address still has to satisfy Missouri. Read the filing office's rule. A neighbor's kitchen table is not always an acceptable address.
An employer identification number is the business tax ID. The IRS issues it online at no charge and says you never have to pay a company to get one. If you form an LLC, file with the state first. The IRS says an EIN application can stall when the state filing is not done. A sole proprietor can often start with a Social Security number and get an EIN when a bank or a hire requires it.
Apply on the IRS page if you want the number yourself. LegalZoom, the partner beside this step, can request it while they form the company. That service is optional. The IRS fee is still zero either way.
Read the state mechanical or air-conditioning license, including who may handle refrigerant, and the city rule for a change-out. A maintenance visit and a system replacement are not the same credential question.
We could not confirm one statewide contractor-board address. Check the city or county, and any state board that names your specific trade.
City of St. Louis permits is the local counter for work in St. Louis. We are naming that office, not linking a fee schedule we have not read. Call them or open the city's own site and ask what a new HVAC has to register before the first job in Soulard.
The Missouri guide repeats the board link and tells you what we could not verify. Read it before you pay a filing service.
05Insure the work
General liability that understands condensers, furnaces, and attic work. Ask about refrigerant and about damage from a condensate leak, which customers often think is a roof. Commercial auto for the van. Workers' compensation before a helper is in an attic in summer. Have the certificate ready for property managers.
Workers' compensation is a state program. Before anyone works with you, including a friend, ask an insurer and the state labor office whether you must carry it. This guide does not quote a headcount, because those rules differ and the state page is the source. The SBA page describes the common policies. It does not sell them. Buy the policy before you work in a house in St. Louis.
Equipment purchases and customer deposits need a business account before the first change-out. A maintenance plan's small monthly payments are easy to lose in a personal account. Deposit them, and set tax money aside when a replacement job pays.
The bank will usually ask for your ID, the EIN or your Social Security number, and the formation papers if you filed an LLC. A checking account and a habit of setting tax money aside are enough at the start.
07Price a day in St. Louis
Lead with diagnosis. A no-cool call is a diagnostic price plus the repair, not an automatic system quote. Write the diagnostic price down, including whether it is waived if they buy the repair.
Replacement prices depend on the equipment location and the ductwork, which you cannot see from a national average. Say that you quote replacement after the diagnostic. Publish the hours you answer when the house is unsafe to stay in.
humid summers, cold winters, ice, tornado and hail risk, and clay that moves with moisture brick houses and basements in the city and close-in suburbs, with a separate newer stock in St. Charles That is why a price copied from another metro will miss. No-cool or no-heat diagnosis, the repair, and a replacement only after you have seen the equipment. In St. Louis, MO, list Central West End and St. Charles together only if one crew really covers both.
Write the price you want for the common job in Central West End and the price you want for a far stop in St. Charles. If the second number is not worth the drive, leave St. Charles off the service area.
08Open the profile, the reviews, and the site
Claim the Google Business Profile for St. Louis, MO. Set hours you answer. The service area should list Central West End, Soulard, and Clayton if those are real stops, and it should leave off towns you will not drive.
Ask for a review after a clean job, and ask them to mention the neighborhood and the task. A review that says the work and Kirkwood helps the next search. A review that says 'great service' does not.
The Google Business Profile should say repair and replacement as separate services, and it should match the season people are actually in. Photos of equipment in local attics, closets, or roofs beat a stock condenser. The website form asks for the symptom and whether anyone in the house is at risk from the temperature. ServiceBase keeps those requests in a list you can work from the driveway.
When the name and the phone are real, create the free HVAC site with St. Louis already filled in. Quote requests land in your list. The site does not replace City of St. Louis permits.
Pick the service you can finish, search the name at the SBA: state registration lookup, get the free EIN from the IRS, read the license page, call City of St. Louis permits, insure the work, open a business account, and publish a page that names Central West End and the jobs you want. No-cool or no-heat diagnosis, the repair, and a replacement only after you have seen the equipment.
What does a HVAC license look like for St. Louis, MO?
Read the state mechanical or air-conditioning license, including who may handle refrigerant, and the city rule for a change-out. A maintenance visit and a system replacement are not the same credential question. We could not confirm one statewide contractor-board address. Check the city or county, and any state board that names your specific trade. Then ask City of St. Louis permits what the city adds.
How should I price HVAC work in St. Louis?
Lead with diagnosis. A no-cool call is a diagnostic price plus the repair, not an automatic system quote. Write the diagnostic price down, including whether it is waived if they buy the repair. humid summers, cold winters, ice, tornado and hail risk, and clay that moves with moisture Time the first ten jobs in Central West End and Clayton before you copy a price from another city.
Can I publish a HVAC site before the LLC is approved?
You can draft it. Put it in public under the name you will actually use, with the phone you answer. If the state requires the license before you advertise the work, wait. The free ServiceBase site does not file the company. Signup can open with HVAC and St. Louis filled in so you are not retyping them.