Which states require free air?
Only California and Connecticut have statewide laws requiring gas stations to provide free air. In every other state, free air is up to the station, which is why it helps to know which chains offer it.
California
California law (Business and Professions Code §13651) requires gas stations to provide free air, water and a tire gauge during operating hours to customers who buy fuel, and to post a sign with a toll-free complaint number. You may need to ask the attendant to switch on the machine or give you a token.
Source: california.public.law
See 5,764 free air locations in CaliforniaConnecticut
Connecticut law (C.G.S. §14-325a) requires every licensed gas station to provide a free air compressor for tires whenever it's open, no purchase needed. Coin-operated machines may charge only after hours; a station with only coin machines must give you coins or a token. Larger stations (10,000+ gallons a month) must post a sign.
Source: fenderbender.comlaw.justia.com
See 501 free air locations in ConnecticutEverywhere else
Outside those two states, stations can charge for air (usually $1.50 to $2.50). Many chains still offer it free as a perk. Tire shops will usually top off your tires for free during business hours too.
This page is general information, not legal advice. Laws change, so check your state's consumer protection office for the current rules.
Free air law FAQ
Which states require free air at gas stations?
California and Connecticut. No other state has a statewide free-air law, although some cities have local rules (Baltimore, for example).
Do I have to buy gas to get free air in California?
Under California law, stations must give free air and water to customers who buy fuel. If you didn't buy fuel, the station can charge. You may need to ask the attendant to turn the machine on.
Can a Connecticut station charge for air after hours?
Yes. Every licensed station must provide free air while it is open. After hours, coin-operated machines may charge. If a station only has a coin machine, it has to give you coins or a token during business hours.
What should I do if a station refuses free air?
Politely mention the state law and ask for a token or for the machine to be switched on. In California you can report it to your county's weights and measures office. In Connecticut, contact the Department of Consumer Protection.