Can propane lines freeze?

In this blog post, we will answer the question: “Can propane lines freeze?” We will discuss the freezing point for propane and talk about a few tips to prevent propane lines from freezing. We will also talk about installing an overfill protection device and discuss how to drain out water from propane tanks.

Can propane lines freeze?

Yes, propane lines can freeze due to extreme climatic conditions. Excess moisture in the propane tank can cause your propane lines or regulators to freeze. Propane lines do not freeze on their own. It’s the water that freezes and not the propane. The freezing point for propane is -44 degrees Fahrenheit. Hence, the chances of propane freezing are rather slim.

  • Propane lines are prone to freezing if there is plenty of moisture in the propane tank.
  • Remember that propane contracts when it is cold on the outside. 
  • Due to the coldness, propane can create pressure, and the volume of propane itself can shrink. 
  • In this situation, it will be difficult for your propane to reach the gas burner.

The other appliances that depend on propane might not be able to function either. However, there are plenty of steps to prevent this from happening. Propane regulators are also known for freezing and the most important part is to keep a check on the propane tank. Here are the steps to prevent propane lines from freezing.

Tips to prevent propane lines from freezing 

One clear thing is that propane cannot freeze so easily since there are no chances of us being in such extreme conditions. That said, you will need to focus on the other components like the propane tank and the propane lines. Several methods are used to prevent propane lines and regulators from freezing.

Avoiding pressure problems 

One way to keep propane lines from freezing is by avoiding pressure problems. Propane will not freeze but it can shrink when it gets cold. When there is not enough pressure in the tank, the propane cannot flow. It is advised to keep your propane tank 30 percent full with propane. The more propane, the more positive pressure there is.

  • Keep your regulators and tanks clear of snow.
  • Use a heat blanket to help keep the tank warm.
  • Never store propane cylinders upside down. Make sure they are stored in an upright position.
  • Turn off the gas valve on the tank when you are not using the propane tank.
  • Make sure your tank is stored in a ventilated area.
  • Use blankets that are made specifically for propane tanks.
  • When you are camping in cold weather make sure to follow the 30 percent rule.
  • In case of an extreme situation, you can use an electric blanket, but make sure that these blankets are made only for propane tanks. 
  • Never use anything that can cause combustion or fire.

Prevent the regulator from freezing 

The most common thing to freeze in extreme conditions is propane regulators. You must prevent your regulator from freezing and the best solution is to avoid overfilling. If your tank is filled with propane, the chances of the regulator freezing are pretty high. Turn off the propane tank and wait for the regulator to thaw.

Preventing moisture buildup 

Preventing moisture buildup is one of the most important things to do when camping in winter. This is a common cause for propane lines to freeze. Due to the water from the moisture buildup inside the propane tank, you can have a frozen regulator or even a blockage. An old regulator will let the moisture inside and this can cause trouble.

  • Be sure to replace the regulators when needed. It is advised to change the regulators at least once a year. 
  • A faulty regulator can also cause other issues. 
  • You will need to take the valve out of the cylinder to get rid of moisture and water. 
  • Adding a bit of anhydrous methanol will help to get rid of the moisture. This solution is known to absorb moisture.

Get the right propane mixture

There are many solutions available and the easiest one to avoid such situations is by getting the right propane mixture. There are special propane mixtures that are made for cold weather. These mixtures are made to resist contraction. If you are camping in extreme weather conditions, it is advised to get the right mixture.

  • The issue of propane lines freezing is due to the pressure in the propane tank or the regulator. 
  • Once you have the pressure sorted, there is no need to worry about the propane lines or regulators freezing. 
  • The key is to keep your propane tanks filled with the right amount of propane. 
  • Make sure they are moist-free and filled properly if you are camping below zero. 
  • Snow is one of the biggest enemies when it comes to propane tanks. Keep snow away from your propane tanks and that should sort out most of the issues.

Preventing propane lines and regulators from freezing is entirely left up to you. Regularly maintaining your propane regulator will help to prevent issues. Adding the right propane mixture will help you, but the most important part is to keep a constant check on the propane lines by maintaining them. 

Install an overfill protection device 

  • Never overall the propane tank unless you are camping during summer. Most people tend to fill their propane tank as much as possible while refilling. 
  • Installing an overfilling protection device will help. You can get an OPD valve in your tank fixed on your cylinder. These valves can help you to prevent overfilling and thus help keep your lines from freezing.
  • One more tip that can slower the freezing is by placing two or more propane tanks close together. This will create a large thermal mass and help slow down the freezing process. 
  • Check if the gas has been injected with a methyl alcohol additive. This will help play a major role when it comes to such situations.

There are propane tanks that usually have a tank gauge that shows the percentage of propane in the tank. Propane is one of the most important things that you need to protect while camping during winter. You must take additional precautions in cold temperatures. Though the chances of propane freezing are probably impossible, the propane lines and regulators are always vulnerable.

Draining out water from propane tanks 

  • Draining out water from propane tanks is very important and you need to make sure that it is done the right way. 
  • Add to or three ounces of anhydrous methyl alcohol to make sure all the water has been soaked. Another way to get this done is by contacting a professional. 
  • Elevate your propane tank if required. 
  • You can also use a propane regulator cover or adjust the regulator vent hole. Bring your regulator inside if you find it frozen and leave it to thaw overnight. 
  • Be sure to carry an electric blanket along with you for the propane tank. These blankets can be bought online or even at stores around you. Electric blankets are common and are one of the fastest ways to help get the propane moving. 

Propane tanks are not too dangerous when it comes to freezing up, but it is better to act on them than to leave them alone. Propane lines and regulators freezing are more common than you know. This can happen during excessive snow or weather that is below zero. Maintaining propane tanks is equally important as maintaining any other device on your motorhome.

Many people have RV refrigerators that run on propane. More people are adapting to propane these days and several other appliances need propane. Be sure to follow the required steps to keep the propane lines and regulators from freezing. Be prepared in advance and make sure to take extra precautions while camping in winter.


In this blog post, we have answered the question: “Can propane lines freeze?” We have discussed the freezing point for propane and talked about a few tips on preventing propane lines from freezing. We have also talked about installing an overfill protection device and discussed how to drain out water from propane tanks.


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