Every CO2 supplier we could find in the Providence area (Rhode Island) was checked one by one, and 10 of them made the list. 3 will refill the cylinder you walk in with. 3 only swap it for a different tank, which matters if yours is new or an odd size. 4 would not confirm either way, so those are marked call to confirm rather than guessed at. 1 confirm food grade CO2 for anything you actually drink; the common sizes here are 5lb; most cover industrial, welding, soda.
10places listed
3confirmed refill
1confirmed 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
Flavor Smart Beverage Group / Rhode Island Fruit & Syrup
Refill
333 Waterman Ave · Smithfield, RI 2917
ServiceRefill
Food gradeYes
Tank sizes5lb
Your cylinderYes, refills yours
homebrewsodabeverage
Hours Mon-Fri 08:30-16:00
Official current gas page explicitly says customers may bring their own CO2 tanks to the Smithfield warehouse for filling and describes beverage CO2 service. Current official contact page verifies address, phone, branch email, and hours. A Rhode Island customer reported a same-cylinder 5 lb refill here in 2024, with a May 2025 follow-up confirming continued 5 lb filling. The 5 lb size is therefore supported by recent customer evidence. Beverage-focused branch evidence supports food_grade=yes.
Hours Mon-Fri 08:00-16:00; Sat 08:00-11:30; Sun Closed
Official current compressed-gases page explicitly says 'Refill Your Tanks at One Convenient Location' and lists carbon dioxide. Official contact page verifies the Providence address, phone, public email, and hours. Food-grade status and exact supported CO2 refill sizes were not published.
Hours Tue-Fri 12:00-18:00; Sat 10:00-18:00; Sun-Mon Closed
Official current site verifies the active Warwick store, address, and phone. A current local listing updated in 2026 reports CO2 filling service, and a May 2025 customer review specifically says the store fills the customer's aquarium CO2 cylinder. Another current directory describes CO2 refills for SodaStream and kegerator use, but its sizing language is ambiguous, so tank_sizes remains unknown. No reliable public email or explicit food-grade designation was verified.
Official current branch page verifies this practical-metro Seekonk store, address, phone, hours, carbon dioxide availability, and Airgas customer-service email. Rhode Island customer evidence from October 2024 specifically describes this branch as an exchange source. The email is corporate/general rather than branch-specific. Food-grade status and exact exchange sizes were not verified.
Official current branch page verifies this Warwick store, current address, phone, hours, carbon dioxide availability, and Airgas customer-service email. Rhode Island customer evidence from January 2024 reports that the Warwick Airgas location only swapped CO2 cylinders rather than refilling the customer's same tank. That workflow evidence is older than the official branch basics, so it is noted as a freshness caveat. The email is corporate/general, not branch-specific. Food-grade status and exchange sizes were not verified.
Hours Mon-Fri 11:00-18:00; Sat 10:00-17:00; Sun Closed
Current 2026 aquarium-store evidence verifies the active Fall River shop, address, phone, website, hours, and explicitly describes a CO2 tank-swapping service for planted-aquarium customers. Because the published service is swapping, accepts_customer_tanks=no under the directory definition. No reliable public email, food-grade designation, or exact exchange cylinder sizes were verified.
Official current branch page verifies this Bristol County location within the Providence-New Bedford-Fall River metro, along with phone, hours, carbon dioxide availability, and Airgas customer-service email. Portable refill versus exchange behavior, food-grade status, and cylinder sizes were not published. The email is corporate/general rather than branch-specific.
Official current branch page verifies the North Attleboro location, phone, current hours, carbon dioxide availability, and Airgas customer-service email. Public branch evidence does not distinguish same-cylinder refill from exchange, and no branch-specific food-grade designation or portable CO2 sizes were established. The email is corporate/general rather than branch-specific.
Hours Mon-Fri 07:30-16:30; Sat 08:00-12:00; Sun Closed
Official current Linde branch page verifies the active Cranston retail location, exact address, phone, and hours. Current Rhode Island industrial-supplier evidence for this branch explicitly includes carbon dioxide. Coordinates are supported by a current local business directory for the exact address. The email is Linde's official general contact address. CWS Gases/Cranston Welding Supply listings at this same address are treated as the predecessor/same physical operation and are not duplicated. Portable refill versus exchange behavior, food-grade status, and cylinder sizes remain unknown.
Official current branch page verifies the active Warwick retail location, address, phone, and hours. Current local branch evidence identifies carbon dioxide among products at this exact Linde location, while a U.S. Coast Guard regional response plan also lists the Warwick branch as a CO2 supplier. The email is Linde's official general contact address because no branch-specific public email was verified. Portable refill versus exchange behavior, food-grade status, and cylinder sizes remain unknown.