Quick Answers
It is generally safe to leave a propane tank outside over the winter as long as you take some basic precautions. The main things to consider are:
- Make sure the tank is not completely empty – leave at least 15-20% capacity
- Close the valve on the tank to avoid any residual propane from escaping
- Protect the regulator, valves and hoses from ice and snow buildup
- Check that all fittings and connections are tight
- Keep the tank upright and securely in place
- Consider covering the tank to protect it from ice and snow
- Be aware that very cold temperatures can effect propane pressure and performance
- Never store or place a propane tank indoors or in an enclosed space
With proper precautions, there should be no safety issues leaving a propane tank outside in freezing weather. Just be sure to monitor the tank and address any potential weather-related performance issues.
Should You Leave a Propane Tank Outside During Winter?
Many homeowners with propane-powered appliances, heating systems or outdoor equipment like gas grills may wonder if a propane tank can be safely left out in the cold winter months or if it’s best brought indoors. There is no definitive yes or no answer, but with the right precautions, you generally can leave a propane tank outside over the winter.
The main concerns with leaving propane tanks outside in freezing temperatures are:
- Performance issues due to very cold temperatures
- Ice buildup around valves, regulators and lines
- Corrosion damage from road salt and snow
- Tanks tipping over from ice, snow or winds
However, as long as you take some basic protective measures and monitor your propane tank, you can typically leave it outdoors all winter without issue.
Can Cold Temperatures Affect a Propane Tank?
Extreme cold can impact the pressure inside a propane tank as well as the performance of propane appliances. Here are some temperature-related issues to be aware of:
- Below -10°F, propane pressure can drop enough to cause appliance performance problems
- Below -40°F, regulators and hose materials get more brittle and prone to cracking
- In very cold weather, propane may not readily vaporize, reducing gas flow
- Ice buildup on regulators, valves and lines can restrict propane flow
These potential issues don’t necessarily mean you can’t leave a tank outside, but you’ll want to take steps to protect equipment and monitor appliance performance.
Is it Safe to Leave Propane Outside in Winter?
Safety should always be the top concern when dealing with flammable gases like propane. But as long as you take the right precautions, leaving a propane tank outside all winter poses minimal risks.
According to the Propane Education & Research Council (PERC), you can safely leave a propane cylinder outside as long as you:
- Check that all fittings are tight and leak-free
- Make sure the main shut-off valve is closed
- Place the tank on a flat, solid surface
- Keep the tank upright and secure it against tipping over
- Consider covering the tank to protect from ice and snow
- Never store in an enclosed space like a shed or garage
You should also avoid completely running out of propane in winter, as this increases the chances of moisture buildup inside the tank. Leaving at least 15-20% capacity in the tank is recommended.
How to Prepare and Maintain a Propane Tank for Winter
Taking some basic precautions and proper maintenance steps will allow you to safely leave your propane tank outside throughout the cold winter season. Here are some important tips:
Inspect Tank and Equipment
Before winter hits, thoroughly inspect your propane tank, pipes, gauges, regulators and other equipment. Look for:
- Corrosion, dents or other damage on the tank
- Cracks, leaks or blockages in pipes and rubber hoses
- Broken seals around gauges and regulators
- Malfunctioning control or release valves
- Loose fittings, clamps or other connections
Repair or replace any damaged or faulty equipment. Tighten any loose fittings or fasteners. This will help minimize performance issues and safety risks during cold weather.
Check Propane Levels
Don’t allow your propane tank to run completely out of fuel before winter starts. It’s recommended to keep at least 15-20% capacity in the tank. This helps avoid moisture buildup inside the tank that can potentially freeze and block fuel lines.
Periodically check the tank fuel gauge throughout winter to make sure propane levels don’t get too low. Refill promptly if the tank falls below 20% capacity.
Close All Valves
Make sure to close the main shut-off valve on your propane tank before winter, even if the tank is empty. This prevents any residual propane vapors from escaping the tank when not in use.
Also close any line valves leading to appliances you won’t be using through the winter. But leave valves open for appliances like furnaces you’ll continue using regularly.
Protect Regulators and Pipes
Regulators convert high pressure propane vapor to safe, regulated pressure for appliances to operate properly. But regulators can freeze up and malfunction in very cold temperatures. To avoid issues:
- Wrap regulators with insulating covers or bags
- Seal any openings with rubber caps or insulation
- Use heat tape on regulator bodies and ambient lines as needed
- Make sure vent openings on two-stage regulators are clear
Also watch for ice buildup around hoses, fittings and other external piping that could block fuel flow. Thaw ice carefully with indirect heat as needed.
Keep Tank Upright and Secure
A tipped over propane tank can be extremely hazardous. Make sure your tank sits flat on a solid base and cannot slide or shift out of position. Some tips for keeping it secure:
- Place on concrete or wood platform, do not sink tank into soil
- Anchor larger tanks to ground or structure
- Brace or tie down smaller cylinders
- Weigh tank down with sandbags or blocks if needed
- Install wind barriers in exposed areas
Also make sure to keep the tank clear of debris, snowdrifts or other obstructions that could cause it to tip over if disturbed.
Cover the Tank
Placing some form of cover over your propane tank can offer additional protection from the elements. Some good options include:
- Ventilated covers or shrouds
- Plastic wraps orbags
- Caps for the regulator and line connections
- Wooden boxes
- Metal or fiberglass enclosures
Just make sure any cover allows ventilation and avoids direct contact with the tank. Never place a propane tank in an unventilated enclosure.
Monitor Tank and Appliance Performance
It’s important to periodically monitor your propane tank pressure gauge and appliance performance throughout the winter. Issues to watch for include:
- Visible ice or clumping on tank or equipment
- Unusual odors indicating a leak
- Flickering appliance flames or sooty exhaust
- Appliances not igniting or running inefficiently
- Low tank pressure readings
If you notice any of these warning signs, troubleshoot the issue immediately. This may involve clearing ice blockages, calling your propane supplier, or having appliances serviced by a professional.
Where to Place Your Propane Tank for Winter
Choosing an appropriate outdoor location to store your propane tank over winter is also important for performance and safety.
Outside Storage Guidelines
Propane tanks should only be stored outside, or in an open-sided structure such as a covered patio or gazebo. According to standards, tanks must be at least:
- 10 feet from any building openings like windows or doors
- 5 feet from any exterior sourceof ignition like an AC unit
- 10 feet from other flammable liquids or gases
- 3 feet from other propane tanks
Tanks should also be placed on a firm, flat surface and not be obstructed by plants, equipment or other objects. And allow ample room for accessing valves and regulators.
Pick a Sheltered Spot
Try to place your propane tank somewhere it will be sheltered from the elements as much as possible. Some good spots include:
- Under back decks or porches
- Against house or garage walls
- Under open-sided sheds or shelters
- Near fences or trees that provide windbreaks
Avoid placing tanks where they will be exposed to drifting snow, falling ice from roofs, or damage from snow blowers and plows.
Consider Accessibility
Also consider accessibility issues if you need to reach or move your propane tank in winter. Allow enough space to inspect, maintain, and fill the tank. Park vehicles or plow snow piles elsewhere.
For larger tanks, make sure the area is accessible to propane delivery trucks. They will need a clear path free of low branches or overhead wires.
Propane Tank Winterization Checklist
Use this winter preparation checklist to make sure your propane tank is ready for cold weather:
| Task | Details | Complete |
|---|---|---|
| Inspect Tank & Equipment | Check for damage, leaks, loose parts | |
| Check Fuel Level | Refill to keep 20% minimum capacity | |
| Close All Valves | Ensure main tank & line valves are shut | |
| Protect Regulators | Insulate, use heat tape as needed | |
| Secure Tank | Anchor in place, brace against tipping | |
| Cover Tank | Use ventilated covers or enclosures | |
| Pick Protected Spot | Near home or trees, not exposed | |
| Maintain Access | Keep path clear for delivery/service |
Frequently Asked Questions
Is it bad to leave propane in the tank during winter?
No, it’s actually recommended to leave a reasonable amount of propane, around 15-20% capacity, in tanks over winter. This helps avoid moisture problems that can occur if the tank is emptied and exposed to freezing temperatures.
Can propane freeze in the tank?
No, propane won’t freeze under normal winter temperatures. But moisture and condensation inside a tank can freeze and cause potential performance issues. Keeping the tank partly fueled helps minimize moisture concerns.
What problems can occur from leaving propane outside in winter?
Potential issues include: ice buildup on valves/lines causing blockages, regulators freezing up and malfunctioning, tanks falling over from snow/ice, corrosion damage from road salt, and appliances not working properly in very cold weather.
Should I disconnect propane lines in winter?
No, there is no need to disconnect propane lines between uses in winter. Simply closing the main tank valve and appliance valves is sufficient when equipment is not in use.
Can you cover a propane tank with a tarp?
Yes, it’s fine to cover a propane tank with a tarp or other ventilated cover. This can help protect the tank from snow, ice and winter precipitation. Just don’t use plastic sheeting or any non-breathable material.
Where is the best place to store a propane tank in winter?
The best spot is somewhere reasonably sheltered from wind, precipitation and drifting snow, while still meeting codes for outdoor tank placement. Under decks or porches, against walls, or near trees or fencing works well.
How often should I check my propane tank in winter?
Plan to visually inspect your propane tank at least monthly through winter, especially after snowstorms or extreme cold. Check fuel levels, pressure, valves, lines and overall tank security. More frequent inspections may be needed in harsher climates.
Can I keep using my propane tank in below zero temperatures?
Yes, you can still use propane appliances and equipment in below zero weather. But you may experience occasional performance issues, like regulators freezing up or appliances struggling to light. Be prepared for colder weather operation.
Should I paint my propane tank white in winter?
Painting propane tanks white or pale colors can help reflect sunlight and minimize icing issues. But it’s not strictly necessary. Tanks are already coated to resist weather damage. Just focus on protecting regulators, valves and lines.
What should I do if my propane tank falls over in winter?
First, shut off the main tank valve if safely possible to stop any potential propane leaks. Then, contact your propane supplier or emergency services for assistance in righting the tank. Do not attempt to move or lift a large tank yourself.
Conclusion
Leaving a propane tank and equipment exposed to freezing winter weather does require some diligence and maintenance to ensure safe, reliable performance. But with proper precautions like insulating regulators, securing tanks and monitoring fuel levels, there is no reason a residential propane system can’t be left outside all winter long. Just be sure to follow all manufacturer guidelines and safety codes.
The most important steps are keeping the tank 20% full, closing main valves when not in use, protecting external components from ice buildup, and safely securing the tank from tipping over. Check on your propane system periodically and address any issues immediately. With proper care, your propane tank should have no problems facing old man winter!
