How to Store Propane Tanks

Propane tanks must be stored outdoors, upright on flat surfaces – and safe distances from buildings and ignition sources. Indoor storage creates serious explosion risks since propane vapor is heavier than air and pools in enclosed spaces.

The right storage setup ensures safe, reliable access to your propane year-round.

Below, you will learn:

• How to store propane tanks outside through all seasons
• Essential safety guidelines for propane storage
• How long tanks last and when they need recertification

How to Store Propane Tanks Outside

Store propane tanks upright on a flat, stable surface with proper clearances: smaller tanks (under 125 gallons) require 3-5 feet from buildings and ignition sources, while larger tanks (250+ gallons) need at least 10 feet. Check local codes for specific requirements based on your tank size.

The ideal outdoor location combines accessibility with protection. Place tanks on a non-combustible surface like concrete or gravel rather than grass or wood decking.

Keep the area around your tanks clear of debris, vegetation, and flammable materials. You can use chain-link enclosures or cages to prevent unauthorized access while maintaining the required ventilation.

Never store tanks in enclosed spaces like sheds or garages, even if they have some ventilation. Propane vapor is heavier than air and will pool in low areas, creating explosion hazards.

How to Store Propane Tanks in the Summer

Direct sunlight won’t make your propane tank explode, but prolonged exposure to temperatures above 120°F can trigger the pressure relief valve. This safety feature releases propane to prevent tank rupture, wasting product and creating potential hazards.

The best summer storage spot offers shade during peak afternoon hours. A simple awning or the north side of a building works well for most operations.

The color of the paint matters more than you might think. White or light-colored tanks reflect heat better than dark ones, keeping internal pressures lower during hot weather.

Good airflow around tanks prevents heat buildup. Leave at least three feet between tanks and walls or other obstructions to allow air circulation.

For facilities managing multiple tanks, rotate inventory so the oldest tanks get used first. This prevents any single tank from sitting in harsh conditions for extended periods.

Monitor pressure gauges more frequently when temperatures exceed 90°F. Higher temperatures mean higher pressures, which can affect delivery rates in commercial applications.

How to Store Propane Tanks in the Winter

Propane doesn’t freeze until -187.8°C (-306°F), but cold weather reduces vapor pressure inside tanks, which can affect equipment performance. Keep tanks at least 30% full during winter to maintain adequate pressure for your operations.

Snow and ice accumulation around tanks isn’t dangerous, but it can block access and hide damage. Clear paths to tanks and keep valves and gauges visible for regular inspections.

Avoid using open flames or electric heaters to warm tanks. If you need to increase vapor pressure for equipment operation, use approved tank heaters designed specifically for propane.

Protect tanks from falling ice and snow loads from roofs. Position them away from roof edges where snow and ice can slide off or install deflectors to redirect sliding snow.

Cold weather makes brass fittings and valves more brittle. Handle connections carefully during winter months and inspect for cracks more frequently.

Keep regulators clear of ice buildup, which can block vents and cause pressure problems. A simple regulator cover prevents most winter-related issues while maintaining required ventilation.

What Are the Safety Guidelines for Storing Propane Tanks?

To safely store propane tanks, keep them upright, maintain safe distances from ignition sources, and ensure proper ventilation. These basics apply whether you’re storing a single tank or managing commercial inventory.

Never store tanks indoors, in basements, or anywhere without unrestricted airflow. Propane is heavier than air and will pool in low areas, creating explosion hazards.

Separate full and empty tanks to avoid confusion during operations. Use chains or straps to secure tanks from tipping, especially in high-traffic areas.

Check your local fire codes for specific requirements about storage capacity and distances. Many jurisdictions have additional rules based on facility type and total volume stored.

For comprehensive safety guidelines, see our complete propane safety guide.

How Long Can You Store Propane Tanks?

Propane itself doesn’t expire or go bad, so you can store tanks indefinitely as long as they’re in good condition. The limiting factor is the tank’s certification date, not the fuel inside of the tank.

Tank Certification Timeline

Most propane tanks require recertification 12 years after manufacture date, then every five years after that. The date stamp on the collar tells you when your tank was made.

Tanks stored properly can last 30 years or more with regular recertification. Poor storage conditions like constant moisture exposure or physical damage will significantly reduce tank life.

Storage Best Practices

Indoor facilities should rotate inventory using a first-in, first-out system. This prevents any single tank from sitting unused long enough to need recertification while in storage.

Check tanks monthly for these issues:

• Rust: surface rust is usually cosmetic, but deep pitting requires tank replacement.
• Dents: especially near valves or seams.
• Valve damage: bent stems or missing caps need immediate attention.

Store empty tanks with valves closed tightly to prevent moisture from entering. 

If you are managing a large inventory, track certification dates in your maintenance system. Schedule recertifications during slow times to avoid disrupting operations.

Storing Propane Tanks Safely Year-Round

Proper propane tank storage means keeping tanks outside, upright, and protected from extreme temperatures while maintaining safe distances from buildings.

Stay safe and compliant with regular tank checks and up-to-date certifications. 

Further Reading: Is Propane Flammable?

Lawrence Haynes

Currently serving as Marketing Director at WestAir Gases & Equipment in San Diego, CA Lawrence leverages his expertise in industrial gas solutions and equipment marketing. With a proven track record in cross-industry marketing strategy, he brings a specialized experience in content development, marketing automation, and partner relations to the industrial gas sector.