What size propane tank do I need for my RV?

Most travel trailers use 30 lb tanks, while small RVs use 20 lb and larger motorhomes use 40 lb or horizontal ASME tanks.

What’s the difference between DOT and ASME propane tanks?

DOT tanks are portable and require recertification every 10 years. ASME tanks are permanent installations and do not require recertification.

How can I tell how much propane is left in my tank?

Use a propane tank gauge or level indicator to monitor fuel levels accurately before refilling.

How often should I replace an RV propane tank?

DOT tanks must be recertified after 10 years and replaced if corroded or damaged. ASME tanks should be inspected regularly for wear.

Can I connect a 100 lb propane tank to my RV?

Yes, with the correct high-pressure hose and regulator setup, you can connect a 100 lb tank for extended stays.

RV Propane Tanks | 20 lb, 30 lb, 40 lb & Horizontal ASME LP Gas Cylinders

RV Propane Tanks

Equip your RV with reliable, certified RV Propane Tanks from The Outdoor Warehouse. Our selection includes 20 lb, 30 lb, and 40 lb propane tanks for every type of rig — from compact travel trailers to Class A motorhomes. Each tank is DOT or ASME certified and designed to deliver safe, efficient propane storage wherever the road takes you.

Choose from Flame King, Manchester, and Camco tanks, plus essential accessories like propane tank gauges, mounting brackets, and tank locks for added security and performance.

Shop RV Propane Tanks, Gauges & Accessories

Propane Regulators & Accessories Tank Covers & Brackets Hoses & Adapter Fittings

Types of RV Propane Tanks

20 lb Propane Tanks: Compact and easy to refill, ideal for small trailers and pop-ups.
30 lb Propane Tanks: The most common size for travel trailers and fifth wheels — balances capacity and portability.
40 lb Propane Tanks: High-capacity tanks for extended camping and heavy appliance use.
Horizontal RV Propane Tanks: Fixed ASME-certified tanks designed for motorhomes and permanent installation.
DOT Cylinders: Portable tanks commonly used for dual-tank setups with automatic changeover regulators.

Compare RV Propane Tank Types

Tank Type	Certification	Capacity	Best For	Key Feature
20 lb DOT Cylinder	DOT	4.6 gallons	Small RVs & pop-ups	Lightweight & portable
30 lb DOT Cylinder	DOT	7 gallons	Travel trailers & fifth wheels	Most popular size for dual-tank setups
40 lb DOT Cylinder	DOT	9.4 gallons	Full-time RVers	Extended runtime between refills
Horizontal ASME Tank	ASME	Custom (varies)	Motorhomes & Class A RVs	Permanent mount, no recertification required

Pro Tip

Keep your propane system efficient and safe with a propane leak detector and two-stage regulator. Always check your propane tank gauge before travel, and store tanks using a protective cover and mounting bracket.

Learn More About RV Propane Tanks

Visit our RV Learning Center for guides on refilling, maintaining, and winterizing propane tanks, understanding DOT vs ASME certification, and choosing the right tank for your RV.

Why Buy RV Propane Tanks from The Outdoor Warehouse?

Featuring top brands: Flame King, Manchester, Camco
All tanks are DOT- or ASME-certified for safety and reliability
Options for horizontal and vertical installations
Accessories available: gauges, locks, holders, and level indicators
Expert support and fast nationwide shipping

Shop high-quality RV Propane Tanks today at The Outdoor Warehouse — engineered for safety, performance, and peace of mind on every adventure.

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