This article will show you how to winterize your Blu Tech setup to prevent freezing, which can damage your filtration unit housing and fittings.

Before you begin, you'll want to verify the correct winterization process for your rig. The exact procedure varies by RV and component, so always follow the winterization instructions provided by your rig's manufacturer. They will specify whether your rig supports antifreeze, air, or both for winterization.

Blu Tech ultimately recommends storing all portable filtration units in an area where they won't be exposed to freezing temperatures. For fixed systems and situations where this isn't possible, the guide below can assist in preventing damage from freezing. It is ultimately the customer's responsibility to ensure the filtration units are stored properly to prevent damage.

Winterizing Blu Tech Filtration Units

Step 1: Drain the tank

• Disconnect the campground water supply and turn off the water pump.

• Open an interior faucet to relieve system pressure for a few minutes. Your rig's manual will specify which faucets to open to ensure maximum pressure relief.

• Drain your fresh-water tank and open the low-point drains per your rig's manual. You'll want to drain as much water as possible to minimize dilution of the antifreeze.

• Remove all fittings and hoses from the Blu Tech unit to allow them to drain. Small water buildup is expected and should be drained from all accessories.

***Your exterior spigots and water systems may have their own winterization process. Be sure to refer to your manual before proceeding. This is also true for your hot water heater***

Step 2: Adding Antifreeze

• As mentioned earlier, the best way to store Blu Tech units during the winter is to remove them from your rig and store them in a location that won't be exposed to freezing temperatures, without needing antifreeze. For this route, you'll want to remove the filters before storing. The filters can be dried and stored in Ziploc bags for later use if they are still in good condition. Please refer to our Blu Tech Water Filter Maintenance Guide for more information. 

• If removing the portable system isn't possible, or you have a fixed system, you will also want to remove the filters first and allow them to dry before storing.
  
  
  • If you have a filtration unit with a UVC module, you will also need to ensure the power is OFF before winterizing your filtration unit. Do not remove the UVC canister when performing the winterization.
    
    
• Screw the empty canisters back into the filtration unit. You're then ready to add antifreeze according to your rig's winterization guidelines.
• You will want to ensure enough antifreeze is added to reach any exterior spigots, filtration components, or other parts that may be exposed to freezing.
• After completing, you're ready to store your rig for the winter!
  
  

Blu Tech recently released a new product called the Winterization Canister that can help lower the amount of antifreeze needed when used with a Blu Tech filtration unit. This cap replaces your canisters, allowing you to run antifreeze without having to fill up the entire 5" or 10" canister. (Note: The UVC canister does not hold enough meaningful antifreeze, and the UVC canister can't be removed, so the Winterization Canister wouldn't be required )

Step 3: Hitting the Road Again

• When you're ready to hit the road again, you'll want to ensure everything is returned to normal operating condition in alignment with your rig's manual before hitting the road.
• For Blu Tech units, you will return the filtration unit and all accessories to your rig and connect them as normal.
• Inspect the filters before returning them to the canisters, as new filters may be needed after storing for a while. If the filters were in use for 2-3 weeks or longer before storage, it's best to replace them. 
• Once everything is reconnected, slowly turn on the water supply and allow the pressure to gradually return. This helps ensure there aren't any damages or O-ring blowouts caused by the pressure being returned all at once.
• Inspect the unit and all fittings to ensure there aren't any leaks or air bubbles. Once complete, you're all set to hit the road!

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