01
CO2 Tank Refills & Swaps
Bring in an empty CO2 tank and leave with a full one, ready for kegerators, planted aquariums, or hydroponics setups.
Learn more →CO2 and Oxygen Tank Refills, Done Right
CO2 and Oxygen Tank Refills, Filled While You Wait
Walk in with your empty CO2 or oxygen tank and walk out with a full one, no fuss and no long wait.
4.7★
Google Rating
48
Google Reviews
$14
CO2 Refill
$21
Tank Swap
5-20 lb
Tank Sizes
Services
Everything we take on.
02
Oxygen Tank Refills & Swaps
Oxygen tank refills and swaps for welding and torch work, with a fresh tank ready when you need it.
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03
Hydrostatic Tank Testing
On-site hydrostatic testing keeps your CO2 and oxygen tanks certified and safe to use.
04
Welding Supplies
Welding supplies and equipment for local shops and individual welders.
Photos
A look around.
Fresh CO2 and Oxygen Tanks, Ready When You Are
Our story
About United Welding Supply Co
United Welding Supply Co is a welding and gas supply shop in the heart of Los Angeles, where customers walk in with an empty CO2 or oxygen tank and walk out with a full one, usually in under half an hour.
We work with home brewers, aquarium and hydroponics growers, and welders and jewelers who need a reliable place to refill or swap a tank. Every tank we hand over passes hydrostatic testing, so it is safe and up to date before it leaves our counter.
Wayne and the team take the time to explain how your setup works, whether that means walking a first time torch user through assembly or making sure a kegerator owner leaves with the right size tank for their setup.
- Same-visit CO2 and oxygen refills
- Hydrostatic testing on every tank
- Serves brewers, growers, and welders
- Patient, hands-on help for first-timers
What customers say
“Great place, called ahead and they said come on in for co2 refill for a brand new 5 lb tank. Was around 20 and really painless. Highly recommend.”
“Wayne is amazing! He helps refill my CO2 tanks for my kegerator often. Each time he is friendly and always a delight to see! Definitely recommend this place with flying colors.”
“Best place to get CO2 in LA. CO2 suitable for planted tanks, home brewing, or hydroponics, etc. I came in with an old 20lb CO2 tank, they swapped it out for a new one that had up-to-date hydrostatic testing and a plastic seal for $21. The CO2 itself was $14. My total was $38 and the amount of CO2 will probably last me 6 months on my 20 gallon planted aquarium. Highly recommend, it's the cheapest and friendliest place I have found by far!”
Get it booked.
Serving Los Angeles.
(213) 748-8471
Get directions →2100 San Pedro St, Los Angeles, CA 90011, USA
Hours
Open now- Monday
- 7:30 AM – 4:00 PM
- Tuesday
- 7:30 AM – 4:00 PM
- Wednesday
- 7:30 AM – 4:00 PM
- Thursday
- 7:30 AM – 4:00 PM
- Friday
- 7:30 AM – 4:00 PM
- Saturday
- Closed
- Sunday
- Closed
2100 San Pedro St, Los Angeles, CA 90011, USA
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