Winterizing dishwasher and washer/dryer combo?

[NorthOrSouth]

I've drained and then blown out the lines on our 92 Monaco Crown Royale and I'm 100% sure the tanks and water heater are clear, but I'm not sure what to do about the dishwasher or washer/dryer unit. How does one make sure that there is no water in them that will freeze over winter (it goes to -40 here in winter).

[NorthOrSouth]

Thanks jtfcons and BB_TX! Will do.

[BB_TX]

You can blow out those lines by running first with cold water setting then with hot. But afterward you need pour antifreeze in the tub and run again so it will pump the antifreeze into the drain trap.

[jtfcons]

NorthOrSouth wrote:
Yeah, I was trying to stay away from antifreeze by blowing out the lines. Don't like the taste of the lines in spring.

I'm with you on this one. What I do with washer/dryer is hook up the air line as you are already doing and run the unit through a cycle. I select warm/warm water temp to insure both water lines are involved. I hear air flowing when the cycle is going. I also pour a cup or so of AF in the tub to protect the pump before starting the cycle. It's worked for me for 10+ years. I don't have a dishwasher but the principle is the same I think.

[NorthOrSouth]

Yeah, I was trying to stay away from antifreeze by blowing out the lines. Don't like the taste of the lines in spring.

[donn0128]

Rv anrifreeze. Pump it thru the lines, then start a cycle in each. Once the tub has pink stuff, you can cancel the cycle. In the spring you can pump fresh water thru the system and you will be ready to go.