Rv Winterizing Methods - To Blow Or Not to Blow?

Rv Winterizing Methods To Blow or Not to Blow? Using an air compressor to blow out your Rv water lines vrs winterizing with Rv antifreeze.

The deliberate upon rages on, as it has for years - Do I blow out the water lines with compressed air or use Rv antifreeze to winterize the Rv water system.

3000 Psi

Many people argue that they have "blown out my Rv water lines for umpteen years, and never had a problem"

This record is meant to express my opinion, as a certified Rv technician (15+ years), who has personally winterized in excess of 3000 Rv's over the years.

1. Compressed air does push most of the water out of the lines, but not all. Any remaining water does what water naturaly does - it runs downhill and collects in the lowest point. Rv plumbing has many up and downs as it runs through discrete cabinets and over discrete obstacles and the water that collects at these places will freeze.

2. The compressed air does not blow out the water that is inside the water pump. It can't do this because the pump has internal valves to forestall backflow and is designed this way.

3. Air compressor air can be dirty and contaminated with traces of oil - without a very good filter, do you want this in your water lines?

4. Rv water systems are designed to control at 45 Psi pressure - any air pressure used should be regulated to not exceed 45 Psi - you can't just run down to the gas middle point and use the tire filler to blow out your Rv lines!

5. Most Rvs will take about 2 gallons of antifreeze to winterize - at .50 or .00 a gallon, that's 5 or 6 bucks. And the time for whether recipe is about the same.

I live and work in central Bc, Canada where winter temperature go to -30 and lower. I have worked for 4 detach Rv dealers in my occupation and all of them use the antifreeze recipe to winterize the lot units. (maybe 100 to 300 Rvs per dealer!) The cost to winterize these units with antifreeze is substantial. If they could just "blow out the lines", don't you think they would do that?

The final option is up to you, of course, but I am reminded of that old Tv commercial slogan - "pay me now or pay me later!"

Rv Winterizing Methods - To Blow Or Not to Blow?

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