# Travel >> Transportation >> RV

How to Winterize RVs With an Air Line

It is important to winterize your RV so the pipes do not freeze, the inside does not mold and it is ready to use in spring without many problems. Winterizing your RV is not difficult and will become easier over time. An air line is used to winterize an RV because it dries out the air to avoid molding while sitting in storage. Even if you use your RV during winter months you want to make sure you prepare it for cold weather if necessary. It is much cheaper to winterize than pay for repair in the spring.

Compressed air adapter
Compressor
RV antifreeze

Instructions

- 1
  Drain the fresh water tank completely.
- 2
  Drain the hot water heater.
- 3
  Dump and flush both black and gray water holding tank. Leave the gray water tank open.
- 4
  Screw the compressed air adapter into the fresh water inlet on the gray water tank.
- 5
  Apply the compressed air condenser keeping the pressure at less than 20 lb. per square inch.
- 6
  Open all the faucets in the RV, one at a time. Allow the water to be forced out of the pipes. Remember to do this to the shower and toilet as well.
- 7
  Remove the plug from the hot water tank to allow the air to drain rest of the water out of the tank. Replace the plug once it is empty.
- 8
  Disconnect the air supply. Remove the adapter. Replace the fresh water plug.
- 9
  Add 3 cups of antifreeze down all the drains and into the toilet.