When is gas cylinder rental billed? Gas cylinder rental is billed by the 15th of the month. Rental is invoiced a month in arrears. Read more: https://procurement.ofa.ncsu.edu/our-services/gas-cylinder-services/ Updated on August 25, 2020 Tagged: BillingInvoice Was this article helpful? Yes No Need Support?Can't find the answer you're looking for?Contact Support