RV propane tanks don’t expire like food — they require recertification. The date stamped on your tank collar indicates when it needs inspection, not when it stops being safe to use. Most RV owners discover this at the worst possible moment: when a propane dealer refuses to fill an ‘expired’ tank right before a camping trip.
New tanks get their first recertification 12 years after manufacture, then every 5 years after that. The confusion comes from the stamped format — it shows month and year of manufacture, but calculating the recertification date requires knowing whether it’s a new tank schedule or a recertified tank schedule. A tank stamped ’01-15′ manufactured in January 2015 won’t need recertification until January 2027, but many owners assume it expired in 2020.
Here’s what catches people off guard: recertification costs typically run close to the price of a new tank. Most RV supply stores charge similar amounts for recertifying an old tank versus buying a replacement, which makes the decision obvious once you know. The recertification process involves visual inspection, pressure testing, and updating the collar stamps — legitimate safety steps, but not economical for tanks that have served their time.
Smart RV owners track their tank dates and plan replacements during off-season sales rather than discovering the issue when propane dealers are busy. Keep a photo of your tank collar on your phone — the month, year, and any recertification stamps tell you exactly where you stand. Most dealers can walk you through the calculation if you’re unsure, but knowing ahead of time prevents delays when you’re ready to hit the road.