Every CO2 supplier we could find in the Memphis area (Tennessee) was checked one by one, and 10 of them made the list. 3 will refill the cylinder you walk in with. 1 only swap it for a different tank, which matters if yours is new or an odd size. 6 would not confirm either way, so those are marked call to confirm rather than guessed at. The common sizes here are 10lb, 5lb; most cover industrial, welding, fire protection.
10places listed
3confirmed refill
0confirmed food grade
Last checked September 2026
Sorted for you: places that refill your own tank come first, then the most complete, confirmed listings. Exchange-only and unconfirmed spots follow.
KeyRefillBothExchangeConfirm
D&D Powersports
Refill
7341 Hacks Cross Rd · Olive Branch, MS 38654
ServiceRefill
Food gradeCall to confirm
Tank sizesAsk when you call
Your cylinderYes, refills yours
powersportsoff-road
Hours Mon Closed; Tue-Wed 09:00-17:00; Thu 09:00-20:00; Fri 09:00-17:00; Sat 09:00-15:00; Sun Closed
Official current service page explicitly states that D&D Powersports can refill customer CO2 cylinders and verifies the Olive Branch address, phone, and store hours. Exact supported CO2 cylinder sizes, food-grade status, and a reliable public email were not published.
Official current State Systems materials verify the Memphis corporate office and 24/7 fire suppression recharge service. State Systems explicitly provides CO2 fire suppression systems and emergency recharging, supporting same-cylinder refill classification for qualifying fire-protection cylinders. A current government licensing record verifies the business email. Food-grade status and cylinder sizes are not applicable or not established. Additional evidence: https://www.statesystemsinc.com/fire-protection/fire-suppression/carbon-dioxide/ ; https://www.statesystemsinc.com/fire-protection/fire-suppression/24-7-emergency-support/
Current 2026 Arkansas Fire Protection Licensing Board records verify this active Olive Branch company, address, phone, email, and hydrostatic license. Current business service evidence confirms extinguisher recharge service, including CO2 extinguisher service, supporting same-cylinder refill classification. No current official website, public hours, food-grade designation, or cylinder sizes were verified.
Official current branch page verifies an active public retail location carrying Carbon Dioxide. Recent November 2025 Memphis homebrew community evidence specifically describes swapping CO2 cylinders at the Walnut location and a 5 lb to 10 lb swap. The same discussion also mentions 5, 10, and 20 lb homebrew cylinders, but only 5 lb and 10 lb are retained as explicitly supported exchange sizes. No reliable public email or explicit current food-grade designation was verified. Additional evidence: https://www.reddit.com/r/memphis/comments/1ol8m37/
Official current Airgas branch page verifies this Memphis location and Carbon Dioxide availability. The email is Airgas's official general customer-service address rather than branch-specific. Portable-cylinder refill versus exchange behavior, food-grade status, and supported sizes were not explicitly established.
Official current Airgas branch page verifies this Olive Branch location and Carbon Dioxide availability. The email is Airgas's official general customer-service address rather than branch-specific. Portable-cylinder refill versus exchange behavior, food-grade status, and supported sizes were not explicitly established.
Official current branch page verifies an active walk-in retail location at 6765 Reese Road carrying Carbon Dioxide. The page does not currently establish whether portable CO2 cylinders are same-cylinder refilled or exchanged, supported sizes, or food-grade status. No reliably visible public email address was available.
Official current branch page verifies the Goodlett retail gas operation and current phone and hours. Current nexAir location materials support Carbon Dioxide availability at this Memphis branch. Portable-cylinder refill versus exchange behavior, supported sizes, and food-grade status were not explicitly established. No reliably visible public email address was available.
Official current branch page verifies the President's Island location, current hours, phone, and Carbon Dioxide availability. Portable-cylinder refill versus exchange behavior, supported sizes, and food-grade status were not explicitly established. No reliably visible public email address was available.
Official current branch page verifies an active walk-in retail location carrying Carbon Dioxide and serving the Memphis metro. A current business listing independently verifies the exact address and coordinates. The nexAir page contains a stray reference to Tulsa in descriptive text, but its page title, service area, phone, and AR-77 location identify the West Memphis branch. Refill versus exchange behavior, sizes, food-grade status, and public email remain unverified.