Step 1


Most campers have the option to easily divert the water flow around the water heater. Once, diverted you will need to loosen and remove the plug to drain the water inside the tank. It is recommended to set the water heater tank plug off to the side after you are finished to let the tank dry out and be ready for next spring.

Step 2


You can easily charge your HosAir Tank up to 80-100psi with your HoseAir Standard Model. To do this you will need to open the door on your HoseAir and detach the air line from valve stem. Next, attach the air hose up to the HoseAir Tank valve stem and hit the switch. Once the desired psi of 80-100 psi is reached, you can turn off the unit and disconnect the air line. With each HoseAir Tank a preset 50psi regular is already attached to the tank so you don’t have to worry about damaging any plumbing lines when hooking up the tank to your camper/RV.

Step 3


HoseAir Tank is designed to hookup directly to any standard garden hose.

Did you know: The average garden hose is rated for 200psi. Meaning it can easily handle your 50psi air push.

Next, you can simply screw on your garden hose to the fresh water hookup located on your camper. (Note: At this time it is a good time to shut off water pump inside your camper.) Once you have the tank and camper hooked up with the water tank shut off, go head and release the air valve located on the HoseAir Tank to pressurize the system. Next, inside the camper, begin to open each water supply (hot & cold) until you hear or see that air is coming through. It’s always a good idea to make a check list of what you have done so you don’t forget anything.

Blowout Checklist

      • Kitchen sink (hot & cold)
      • Bathroom sink (hot & cold)
      • Shower (hot & cold)
      • Outdoor Shower (hot & cold)
      • Toilet (flush until you hear air)

Once process is completed, you can detach air from camper. Don’t forget to shut the tank valve off before disconnecting to preserve your air for another project. 

Step 4


Now it is a good time to go ahead and drain your fresh water tank by removing the plug located under the camper. It is also a good practice to keep the plug in a safe spot inside the camper. This will allow the tank to fully drain. Next, you need to drain the extra septic water remaining in the black and grey septic tanks. This step is recommended before adding antifreeze to system.

Step 5


This step is an important process to replace residual water remaining in the water pump and sink traps with specially made RV antifreeze (available at most retail stores). First, simply attach a small hose to your fresh water hookup and stick the other end of the hose into the bottle of your RV antifreeze. Next, go back inside the camper and turn the water pump back on. At each location on your checklist, once again open the the supply’s until this time you see the colored antifreeze. It is ok to run a little into the drains to help fill the drain traps. This extra antifreeze will than drain down to the black and grey tanks to saturate any extra residual water sitting inside your septic tanks.

That’s it, your done! Piece of Cake… Now go do your buddy’s camper!