Every CO2 supplier we could find in the Nashville area (Tennessee) was checked one by one, and 11 of them made the list. 5 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. 2 confirm food grade CO2 for anything you actually drink; the common sizes here are 20lb; most cover welding, industrial, soda.
11places listed
5confirmed refill
2confirmed 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
Holston Gases - Nashville
Refill
109 Centennial Circle · Nashville, TN 37209
ServiceRefill
Food gradeYes
Tank sizes20lb
Your cylinderYes, refills yours
homebrewsodabeverage
Hours Mon-Fri 07:30-16:30; Sat-Sun Closed
Official Nashville beverage CO2 page explicitly advertises CO2 cylinder refills, beverage CO2, and containers beginning at 20 lb cylinders. This supports same-cylinder refill, food_grade=yes, and 20 lb as an explicitly supported refill size. The email is Holston's official general quote address rather than branch-specific.
Official current Nashville branch page verifies the Madison branch, branch service email, phone, and fire-extinguisher service. Current Koorsen service guidance confirms CO2 cylinders are accepted by local branches for testing and refilling. Included only for fire-protection CO2 service; food-grade status and supported cylinder sizes were not established.
Hours Sat-Sun 10:00-16:00; private parties by appointment Mon-Sun
Official current site verifies the active field, address, phone, email, and hours. The current rates page explicitly offers CO2 fills priced per ounce, supporting same-cylinder refill. No supported cylinder sizes or food-grade designation were published.
Official current Nashville office page verifies the physical branch and phone. State Systems' Nashville fire-suppression page explicitly states that the company is a licensed CO2 recharging station serving Nashville, supporting same-cylinder recharge. No reliable public branch email, regular office hours, food-grade designation, or cylinder sizes were verified.
Current business and carrier records verify the active Nashville gas supplier at this address. Current local supplier listings explicitly identify CO2 refill service at this exact location. The email is from a current federal carrier record because no official public customer-service email was found. Food-grade status and supported refill sizes were not verified.
Official current site verifies address, phone, email, and hours and explicitly lists CO2 and Beer Gas under Hobby Gas with exchange on site. Because the service is explicitly exchange, accepts_customer_tanks=no under the directory definition. No exact exchange sizes or explicit food-grade designation were found.
Current BBB evidence verifies the Nashville physical depot at 109 Edison Street, with the local BBB file opened in April 2025. NuCO2's current official site confirms certified beverage-grade CO2, high-pressure cylinder ordering, and the corporate customer-service email. Public walk-in portable-cylinder refill versus exchange behavior and local depot hours were not established.
Official current branch page verifies the Murfreesboro location, branch-specific email, phone, regular hours, and carbon dioxide availability. Portable refill versus exchange behavior, food-grade status, and supported cylinder sizes were not published.
Official current branch page verifies this retail location and explicitly lists carbon dioxide among available gases. The email is Airgas's official general customer-service address rather than branch-specific. Portable refill versus exchange behavior, food-grade status, and cylinder sizes were not published.
Hours Mon-Fri 07:30-12:00 and 13:00-16:00; Sat-Sun Closed
Official current branch page verifies the exact location, branch-specific email, phone, hours, and carbon dioxide availability. Coordinates are supported by a current local business listing for the exact address. Portable refill versus exchange behavior, food-grade status, and cylinder sizes remain unknown.
Official current Nashville location page verifies this public walk-in retail branch, its hours, carbon dioxide availability, and cylinder unloading dock. Current local listings verify the 1306 Lebanon Pike address. Linde/Praxair listings at the same address were treated as the same physical operation and not duplicated. No reliable public email, refill-versus-exchange behavior, food-grade status, or portable CO2 sizes were verified.