Every CO2 supplier we could find in the Indianapolis area (Indiana) was checked one by one, and 10 of them made the list. 2 will refill the cylinder you walk in with. 2 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. 3 confirm food grade CO2 for anything you actually drink; the common sizes here are 5lb, 15lb, 2.5lb; most cover welding, soda, homebrew.
10places listed
2confirmed refill
3confirmed 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
Sutton-Garten Company
Refill
901 N Senate Ave · Indianapolis, IN 46202
ServiceRefill
Food gradeYes
Tank sizesAsk when you call
Your cylinderYes, refills yours
homebrewsodawelding
Hours Mon-Fri 07:30-17:00; Sat-Sun Closed
Official current site verifies the Indianapolis headquarters and states that Sutton-Garten can fill carbon dioxide cylinders on site. Current 2026 company materials identify beverage and CO2 service from the Indianapolis operation for restaurants and breweries, supporting food_grade=yes as beverage-grade-equivalent evidence. Exact portable refill sizes and a public gas-service email were not verified.
2719 North Arlington Avenue · Indianapolis, IN 46218
ServiceRefill
Food gradeCall to confirm
Tank sizesAsk when you call
Your cylinderYes, refills yours
sodafire protection
Hours Mon-Fri 08:00-16:30; Sat-Sun Closed
Official current Indianapolis branch page verifies the location, phone, and branch service email. Koorsen's current hydrostatic-testing guidance explicitly covers CO2 tanks, including soda-machine cylinders, and states that customers can leave cylinders with a local branch for testing and refilling. Food-grade status and supported cylinder sizes were not established.
Official current branch page explicitly lists carbon dioxide and verifies the address, phone, branch-specific email, and hours. Recent Indianapolis community evidence from July 2025 reports a 5 lb CO2 tank exchange at the Airgas location near Beech Grove, I-465, and Emerson, matching this Elmwood branch. Same-cylinder refill was not established. Food-grade status was not verified.
Official current store and product pages explicitly state that Great Fermentations operates a CO2 exchange program at this Indianapolis store. Current product pages verify 2.5 lb, 5 lb, and 15 lb exchange sizes. The official site masks the public email in search-readable text, so email is left unknown rather than guessed. Food-grade designation was not explicitly published.
Official current branch page verifies the Fishers-area Indianapolis location, branch-specific email, phone, hours, industrial gas capability, and food-and-beverage industry service. Current local business evidence for this exact branch specifically identifies food-grade CO2. Portable refill versus exchange behavior and supported cylinder sizes were not established strongly enough to classify.
Current local business evidence verifies the physical Indianapolis NuCO2 depot at this address. NuCO2's current official site states that it distributes only certified beverage-grade CO2 and accepts high-pressure cylinder orders, and publishes its corporate customer-service email and 24/7 support number. Public walk-in portable-cylinder refill versus exchange behavior and local depot hours were not established.
Official current branch page explicitly lists carbon dioxide and verifies the physical location, phone, branch-specific email, and regular weekday hours. Portable refill versus exchange behavior, food-grade availability, and supported CO2 cylinder sizes were not published.
5353 West Southern Avenue · Indianapolis, IN 46242
ServiceCall to confirm
Food gradeCall to confirm
Tank sizesAsk when you call
Your cylinderAsk
weldingindustrialbeverage
Hours Mon-Fri 08:00-16:30; Sat-Sun Closed
Official current branch page verifies the Indianapolis location, phone, and hours. AWG's current company materials confirm carbon dioxide distribution and beverage-gas operations, and the Indianapolis operation is an active cylinder-gas branch. The email is AWG's official corporate customer-service address because the branch page exposes an encoded address that is not used here. Branch-specific refill versus exchange behavior, food-grade designation, and sizes remain unknown.
Official current branch page verifies this Indianapolis location, branch-specific email, phone, and hours. Indiana Oxygen's current industrial-gas capability page is explicitly tagged to the Corporate Office & Indy location and lists Carbon Dioxide among gases supplied. Public current evidence does not clearly distinguish same-cylinder refill from exchange for portable CO2 cylinders, and no explicit food-grade designation or refill/exchange sizes were established.
Linde Welding Gas & Equipment Center - Indianapolis
Call to confirm
1400 Polco St · Indianapolis, IN 46222
ServiceCall to confirm
Food gradeCall to confirm
Tank sizesAsk when you call
Your cylinderAsk
weldingindustrial
Hours Mon-Fri 07:30-16:30; Sat-Sun Closed
Official current branch page verifies this Indianapolis retail gas and welding location, phone, and hours. Current Linde store materials identify carbon dioxide among gases carried by its Indiana welding-gas centers. The email is Linde's official corporate contact address because no branch-specific public email was verified. Portable refill versus exchange behavior, food-grade status, and supported sizes remain unknown.