Every CO2 supplier we could find in the Raleigh area (North Carolina) was checked one by one, and 12 of them made the list. 3 will refill the cylinder you walk in with. 6 only swap it for a different tank, which matters if yours is new or an odd size. 3 would not confirm either way, so those are marked call to confirm rather than guessed at. 6 confirm food grade CO2 for anything you actually drink; the common sizes here are 5lb, 20lb, 10lb; most cover soda, welding, homebrew.
12places listed
3confirmed refill
6confirmed food grade
Last checked October 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
American Brewmaster
Refill
3021-5 Stony Brook Dr · Raleigh, NC 27604
ServiceRefill
Food gradeCall to confirm
Tank sizes2.5lb, 5lb, 10lb, 15lb, 20lb, 50lb
Your cylinderYes, refills yours
homebrewsodaaquarium
Hours Sun 12:00-16:00; Mon-Wed 10:00-16:00; Thu-Sat 10:00-17:30
Official site explicitly states it fills customer CO2 tanks and lists refill products for 2.5, 5, 10, 15, 20, and 50 lb cylinders. A June 17, 2026 Raleigh community report also confirms current fills when the cylinder test date is acceptable. Evidence: https://www.reddit.com/r/raleigh/comments/1u898je/best_place_to_get_co2_tanks_and_refills_in_raleigh/. Email source: https://americanbrewmaster.com/troubleshooting/.
Hours Mon-Fri 09:00-15:00 while-you-wait; other times drop-off with next-business-day pickup
Official keg sales page explicitly states the Holly Springs location fills customer CO2 cylinders and lists 2.5, 5, 10, and 20 lb fill prices. Current pressure-test date is required. Email source: https://www.carolinabrew.com/about-us/.
Official branch page confirms current extinguisher recharge service. A December 2025 Durham community price comparison specifically reports a 5 lb CO2 refill at Pye-Barker for about $50. Evidence: https://www.reddit.com/r/bullcity/comments/1pfp3av/co2_refills_on_the_weekend/
Official branch page confirms beverage gases at the current Durham retail branch. Arc3's beverage CO2 program is beverage-grade. A December 2025 Durham community comparison reports a 5 lb Arc3 CO2 swap for about $38. Evidence: https://www.reddit.com/r/bullcity/comments/1pfp3av/co2_refills_on_the_weekend/. Email source: https://www.arc3gases.com/locations.
Official CO2 Gas Only product page explicitly states Fifth Season performs tank exchanges only, does not fill onsite, and supplies food-grade CO2. Current inventory showed 5 lb and 20 lb exchange cylinders at Carrboro when checked. Email source: https://fifthseasongardening.com/stores/carrboro.
Hours Mon-Thu 10:00-19:00; Fri 10:00-18:00; Sat 09:00-18:00; Sun 11:00-18:00
Official CO2 Gas Only product page explicitly states Fifth Season performs tank exchanges only, does not fill onsite, and supplies food-grade CO2. Current inventory showed 10 lb and 20 lb exchange cylinders at Raleigh when checked. Email source: https://fifthseasongardening.com/stores/raleigh. Exchange only. Also swaps SodaStream cylinders (pink quick-connect and blue). Does not stock 20 lb tanks with siphon tubes. Call ahead to check stock; exchange pricing listed at shop.fifthseasongardening.com.
Hours Mon-Fri 08:00-12:00 and 13:00-17:00; Sat-Sun Closed
Official branch page explicitly lists carbon dioxide. Raleigh Triangle community evidence identifies the Airgas by the airport as a tank-swap location and specifically advises calling ahead for 10 lb and 20 lb cylinders. Evidence: https://www.reddit.com/r/triangle/comments/1d2i7gc/hydrostatic_testing/. Email is corporate/general contact; Email source: https://www.airgas.com/customer-service.
2200 Westinghouse Blvd Suite 106 · Raleigh, NC 27604
ServiceExchange
Food gradeYes
Tank sizesAsk when you call
Your cylinderExchange only
aquariumwelding
Hours Mon-Fri 07:30-17:00; Sat-Sun Closed
Official Roberts location page confirms the active Raleigh branch. A June 17, 2026 Raleigh community report says a customer purchased a CO2 cylinder here and now exchanges it tank-for-tank for a filled cylinder. Evidence: https://www.reddit.com/r/raleigh/comments/1u898je/best_place_to_get_co2_tanks_and_refills_in_raleigh/. Email is corporate/general contact; Email source: https://www.robertsoxygen.com/contact. Confirmed by Roberts Oxygen in October 2026: the CO2 is food grade and every branch does cylinder exchange rather than refilling the cylinder you bring in. The company stated this applies across all of its locations, so it is a company policy rather than a branch-level check.
Official branch page confirms the current Raleigh location and carbon dioxide availability. Recent Raleigh-area community evidence reports Airgas cylinder swaps rather than same-cylinder fills. Exact sizes and food-grade availability at this branch were not verified. Email is corporate/general contact; Email source: https://www.airgas.com/customer-service.
Official Raleigh branch page lists beverage gases, and Arc3's CO2 beverage program specifies beverage-grade CO2. A June 17, 2026 Raleigh community report confirms customers use this 401 South-area Arc3 location for CO2, including a 20 lb water-carbonation setup, but refill-versus-exchange behavior was not explicit enough to classify. Evidence: https://www.reddit.com/r/raleigh/comments/1u898je/best_place_to_get_co2_tanks_and_refills_in_raleigh/. Email source: https://www.arc3gases.com/locations.
Current Raleigh business listing confirms this physical location and coordinates. NuCO2 states it uses beverage-grade CO2 certified to ISBT guidelines. Service is primarily commercial beverage carbonation; walk-in cylinder refill-versus-exchange behavior and portable tank sizes were not verified. Email is corporate/general contact; Email source: https://www.nuco2.com/Home/Contact.
Official Linde page confirms the current Raleigh industrial-gas retail branch. A June 17, 2026 Raleigh CO2 discussion identifies Linde as a legitimate local gas supplier for cylinder service, while noting more procedural hurdles than homebrew-focused shops. Exact refill-versus-exchange behavior, food grade, and sizes were not verified. Evidence: https://www.reddit.com/r/raleigh/comments/1u898je/best_place_to_get_co2_tanks_and_refills_in_raleigh/. Email is corporate/general contact; Email source: https://www.linde.com/contact-us.