Boston · Massachusetts
Every CO2 supplier we could find in the Boston area (Massachusetts) was checked one by one, and 12 of them made the list. 6 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. 5 would not confirm either way, so those are marked call to confirm rather than guessed at. Most cover soda, welding, fire protection.
Last checked September 2026
168 Commercial Street · Lynn, MA 1905
Hours Mon-Fri 08:00-16:00
Official current site explicitly states that this location fills CO2 for beer machines and paintball cylinders and verifies the address, phone, and weekday hours. No reliable public email, explicit food-grade designation, or supported refill sizes were verified.
120 Pond St · Ashland, MA 1721
Hours Wed 11:00-17:00; Fri 11:00-17:00; Sat-Sun 10:00-18:00
Current official hours page and current local listing verify the active Ashland field, address, phone, email, and operating schedule. Boston Paintball's service page explicitly addresses CO2 and HPA tank filling. The older Chelsea location is permanently closed and is not included. Food-grade status and exact CO2 refill sizes were not verified.
27 Maple Avenue · Holbrook, MA 2343
A current Braintree municipal fire-extinguisher page identifies MetroSouth Fire Equipment at this exact Holbrook address and phone as a location where CO2 cylinders may be recharged. No reliable current public email, website, hours, food-grade designation, or supported refill sizes were verified.
197 VFW Dr · Rockland, MA 2370
Hours Mon-Fri 09:00-17:00
Current official site verifies the active Rockland business, address, phone, email, and hours. A current Braintree municipal page identifies R.E. Lyons as a location where CO2 cylinders may be recharged. Coordinates are supported by a current business directory for the exact address. Food-grade status and refill sizes were not verified.
288 Willard St · Quincy, MA 2169
Hours Mon-Fri 07:00-16:30
Current BBB information explicitly says the business offers CO2 recharging, and a current Braintree municipal disposal page directs residents with CO2 cylinders to this exact location for recharge. Current business listings verify weekday hours. No reliable public email, food-grade designation, or refill sizes were verified.
61 Dorchester Ave · Boston, MA 2127
Hours Mon-Fri 07:00-16:30; Sat 08:00-12:00; Sun Closed
Current business listings verify the active South Boston welding and gas supplier, address, phone, website, and hours. Boston homebrew community evidence specifically identifies Tolman as a place that returns the customer's same CO2 cylinder after filling, including beverage use. Because the refill workflow evidence is community sourced rather than current official service copy, food-grade status and sizes remain unknown.
85-87 Andover St · Danvers, MA 1923
Hours Mon-Thu 10:00-17:00; Fri-Sat 09:00-17:00; Sun seasonal
Official current site explicitly advertises a CO2 Tank Swap program and verifies the Danvers showroom, phone, and hours. The email is supported by a recent reputable 2025 winemaking directory because the official site masks the address in search-readable text. Same-cylinder refill is not the published service, so accepts_customer_tanks=no. Exact swap sizes and food-grade designation were not verified strongly enough for publication.
1 Plank St · Billerica, MA 1821
Official current branch page explicitly lists carbon dioxide at this Billerica store and verifies the physical branch and phone. The email is Airgas's official general customer-service address because no branch-specific public email was verified. Public refill versus exchange behavior, food-grade status, supported sizes, and reliable regular hours were not established from the available current evidence.
5 Pond Park Rd · Hingham, MA 2043
Hours Mon-Fri 07:30-16:00; Sat-Sun Closed
Official current branch page explicitly lists carbon dioxide at this Hingham store and verifies the address, phone, and hours. The email is Airgas's official general customer-service address because no branch-specific public email was exposed. Portable refill versus exchange behavior, food-grade status, and sizes remain unknown.
1200 Eastern Ave · Malden, MA 2148
Hours Tue-Fri 07:30-16:30; Sat-Sun Closed; Mon varies for holidays
Official current branch page verifies the active Malden store, branch-specific email, address, phone, and hours, and explicitly says products and services may include beverage gases. Public evidence does not clearly establish portable-cylinder refill versus exchange behavior, exact CO2 sizes, or food-grade status at this branch.
97 Maple St · Stoughton, MA 2072
Hours Mon-Fri 07:30-16:00; Sat-Sun Closed
Official current branch page explicitly lists carbon dioxide at this Stoughton store and verifies the address, phone, and hours. The email is Airgas's official general customer-service address because no branch-specific public email was exposed. Portable refill versus exchange behavior, food-grade status, and sizes remain unknown.
205 Grove St · Watertown, MA 2472
Hours Mon-Fri 08:00-16:00; Sat-Sun Closed
Official current site verifies the Watertown location, phone, email, hours, and carbon dioxide supply. Current local business information also states that the Watertown plant is capable of filling carbon dioxide. Public evidence does not clearly establish whether a walk-in customer's exact portable cylinder is returned or exchanged, so service_type and accepts_customer_tanks remain unknown.