Propane Refill & Exchange in St. Louis, MO
12 propane refill and exchange options in St. Louis, MO — alternative fuel station, welding supply store, propane supplier, gas station, industrial equipment supplier and hardware store — each with a published phone number so you can call and confirm price, hours and tank size before you go.
Listings below are shown for information only, using publicly available contact details. Portable Propane Heater has no business relationship with the businesses listed, does not vet or endorse them, and is not paid for any listing. Confirm details directly with a business before relying on this information.
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Refilling vs. Exchanging in St. Louis
Exchange — common at hardware stores, gas stations and home-improvement retailers — swaps your empty cylinder for a filled one on the spot, though exchange cylinders are typically filled to around 15 lb rather than a 20 lb tank's full capacity. Refilling at a dedicated propane dealer fills the same tank to its actual rated capacity and is usually cheaper per gallon, but takes a few minutes longer and isn't offered at every location below. Call ahead to check which service a listing offers — see our full refill vs. exchange breakdown for the cost comparison.
12 Propane Refill & Exchange Providers in St. Louis, MO
From public Google Maps business data for "propane refill" and "propane tank exchange" — contact any of them directly; we don't take your details or route your call.
- 1
CNG - Love's Alternative Energy
1400 S 2nd St, St. Louis, MO 63104
Public listing only — not an endorsement, referral, or paid placement. Confirm details directly with the business.
- 2
Airgas Store
3500 Bernard St, St. Louis, MO 63103
Public listing only — not an endorsement, referral, or paid placement. Confirm details directly with the business.
- 3
Propane Refill at U-Haul
1641 S Kingshighway Blvd, St. Louis, MO 63110
Public listing only — not an endorsement, referral, or paid placement. Confirm details directly with the business.
- 4
Propane Refill at U-Haul
4230 Gravois Ave, St. Louis, MO 63116
Public listing only — not an endorsement, referral, or paid placement. Confirm details directly with the business.
- 5
bp
902 S Broadway, St. Louis, MO 63102
Public listing only — not an endorsement, referral, or paid placement. Confirm details directly with the business.
- 6
CK Supply
5835 Manchester Ave, St. Louis, MO 63110
Public listing only — not an endorsement, referral, or paid placement. Confirm details directly with the business.
- 7
Grainger Industrial Supply
2227 Clark Ave, St. Louis, MO 63103
Public listing only — not an endorsement, referral, or paid placement. Confirm details directly with the business.
- 8
bp
306 Riverpark Dr, East St Louis, IL 62201
Public listing only — not an endorsement, referral, or paid placement. Confirm details directly with the business.
- 9
Harbor Freight
4610 Chippewa St suite a, St. Louis, MO 63116
Public listing only — not an endorsement, referral, or paid placement. Confirm details directly with the business.
- 10
Edele & Mertz Hardware Co
1822 S Broadway, St. Louis, MO 63104
Public listing only — not an endorsement, referral, or paid placement. Confirm details directly with the business.
- 11
Propane Refill & Exchange at U-Haul
7270 Olive Blvd, University City, MO 63130
Public listing only — not an endorsement, referral, or paid placement. Confirm details directly with the business.
- 12
U-Haul Moving & Storage at Kingshighway
1641 S Kingshighway Blvd, St. Louis, MO 63110
Public listing only — not an endorsement, referral, or paid placement. Confirm details directly with the business.
Listing data from public Google Maps business listings, as of September 4, 2026. Google ratings shown are each business's publicly displayed rating on that date and may have changed. Request a correction or removal.
Propane Tank & Accessory Picks
Handy if you're thinking about buying your own tank instead of always exchanging — real products, tap through for the live price.
Best for connecting an older POL-valve tank to newer QCC1 hoses and regulators
Best for switching tanks automatically on an RV or dual-tank setup
Best for connecting a larger 100 lb tank at extra distance