I am very new to RVing, and I need to know how to keep my RV safe from freezing weather. I bought some RV Anti-freeze in WalMart today and I wonder if all you have to do is put the anti-freeze in your fresh water tank, and run your water pump thru the system, until it comes out of the facets. Then pour some in each drain, sink, shower, toilet etc. I have heard two different stories about this. One guy said I should drain all water, and blow out the lines with compressed air. Another guy told me not to do this, because in some instances it could harm your plumbing. I would appreciate some advice on this, as winter is fast approaching. Thank you very much.
For what it is worth, I blow the lines (reduced air pressure of about 40 psi) AFTER draining the fresh water tank.
Also, then drain the hot water heater by removing the plug; and, I flip the bypass on the hot water heater.
Then, I place a gallon of rv antifreeze next to my water pump, and have a valve which lets the pump run the antifreeze through all my lines in the rv. I open the faucet nearest the pump till the antifreeze runs, shut them and move to the next, including the commode. and finish with the shower, and then the two low drains under the trailer. Once antifreeze runs out those, I know the entire system is protected.
Then pour a cup in each of the sink traps, shower, and commode, and finished.
It usually takes a gallon and half to do the entire rv. If you put antifreeze in your fresh water tank and pump out of there, it is going to take a lot more antifreeze, plus, in the spring you have to get it all out of the fresh water tank.
I am not saying this is the best approach, just works for us.
Don't pour the antifreeze in your fresh water tank. There is a winterizing procedure that allows the pump to suck antifreeze directly from the bottle to fill all lines with antifreeze. You must 'bypass' the hot water heater first to keep the antifreeze from going in the heater tank. There are valves to do this, find them and figure them out, they are straight forward. Drain the hot water tank seperately. There is also a valve for that.
If you do a search, (the little magnifying glass) there are threads that address this issue rather well.
If you are uncomfortable doing this procedure yourself (and it must be done right), it might be helpful to take the coach to a service facility and pay someone to do it the first time...on condition you can watch and take notes.
Jerry and Katie
More than 20 great years motorhoming and still loving it...
2004 DSDP 3810 (more than I needed...less than I wanted)
2004 Trailblazer (too heavy but well worth dragging)
I've used the air system for many years without a problem. But with the air connected, I always have one faucet open so there's no air pressure building up in the lines or system. Then I go to each faucet and open it up until just air comes through. When I'm done I open all the faucets and leave them open. Drain the water tank and hot water tank, fill the "P" traps and you're all set. When spring comes, it's very easy to get everything going.
I definately agree that you don't want to put anti freeze in the fresh water tank. The website that was mentioned in an earlier thread is very good but misses a couple of areas. If you have a washer/dryer, ice cube maker or water filter system beside the sink they require special attention. If you have none of these I would suggest following the directions on the website. They will work fine.
Good Luck & Happy Camping
Celia Lee, Hutch & Dixie our Choc. Lab
Good Sam & KOA
2007 Keystone Everest 344J, Quad Slides
2005 Ford F-350,Crew Cab, SWB, 6.0 Diesel, Reese 16K Slide Hitch
Another way to get the antifreeze into the system is to use a drill mounted pump, about $12, and suck the antifreeze out of the bottle and go into the water intake fitting, just like when you hook into the water supply.