In general, RVs can handle cold weather, but once the temperature drops below freezing, problems can arise. A frozen holding tank, connection, or pipe in your RV could cause serious damage. So everyone should know how to safely thaw a frozen RV tank. Because RV holding tanks are one of the most exposed parts, they can take a long time to thaw. Your RV may not have running water if it is out of service.
Here are the best ways to defrost an RV tank:
Fortunately, it is possible to speed up the defrosting process and prevent freezing by using certain methods. Some of the most effective options are listed below.
1. Hair dryer/heat gun:
A frozen RV tank can be more effectively thawed by applying heat directly to it. Hair dryers are less efficient at achieving the same results as heat guns. This method should be used with caution if you want to use it. If temperatures change drastically, you could end up melting the outer shell of your holding tank unless you take special precautions. It is important to take special care when handling ABS and polyethylene, which are commonly used for holding tanks. For best results start at the top and work your way down into the tank. Use a hair dryer or heat gun for only a short period of time on one area. You should be able to open the termination valve once you reach it. The contents of the tank will heat up as it is moved. When this happens, the tank has thawed!
2. Install a 100-watt bulb:
Slow and steady defrosting can be achieved with the 100-watt light bulb method. The heater can provide a constant source of heat that will help maintain a comfortable temperature in the holding tank. You won’t have to worry about extreme temperature swings, since a 100-watt bulb can’t produce much heat on its own. This method works best on closed undersides of RVs without heaters if the holding tanks are inside. The space will be gradually heated by a 100-watt light bulb installed under the eaves. You will need patience, but this method is safer than using a hair dryer or heat gun. As a bonus, defrosting the tank is quicker than letting it thaw naturally.
3. Thaw the tank naturally:
Alternatively, wait and let your tanks thaw naturally if you have no choice. When the weather outside is above freezing, your tanks may naturally melt. This could take several hours, so people in a hurry should not attempt this. Insulating your RV’s tanks and running the heater can help speed things up. To prevent cracking or damage to the exterior of the tanks, allow the tanks to thaw at their own pace.
