• When (online): Skip the line with our Online sale May 20-23, fill up before the weekend!


  • When (Instore): Memorial Day Weekend, May 24-25th!
  • What: $10 Propane and a $10 Koopon on each tank (up to 2 per household) filled! That’s basically free when you do the math 📝
  • Where: All Koopman locations except our Milford and Dennis locations
  • Why: Because we love our communities and this is a beloved and easy way to give back. 

How do I know if my tank is expired?

Due to Federal regulations, tanks older than 12 years cannot be filled. They must have a stamp later than 2012 (for 2024) to be fillable. However, any tank of any age showing visible rust or damage may be refused.

Tank Expiration Date

Recertified Tanks

If the tank has been recertified, it should have a sticker. If it has the letter “E” after the date, add 5 years to the expiration date listed on the tank.

Below is an example to show a tank good until July of 2016. However, if a tank has visible rust or damage, it may be refused.

Tank Qualification Sticker Good

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