The question of whether we should keep RV antifreeze out of the Alde when we use it for winterizing comes up repeatedly so I thought I'd ask Alde directly.
Here Is the response I got from Spencer Tangeman, a service technician at Alde. But first, I asked Spencer's permission to post his answer and he replied, "I appreciate you asking before doing so, I have heard plenty of times emails just being posted on forums without consent. So thank you!"
"Yes, but… There are some things that you have to be aware of when you add RV antifreeze into the boiler. One is you will need to flush the system before you use the sanitary water side next summer, personally if I could prevent that extra step every year I would do that. Secondly you’re adding a chemical that may be heated up to 170 degrees F., is that in that fluids specifications? If it can be heated up to that temp fine then you have nothing to be concerned about, you can just use the system like normal and enjoy a nice comfortable trailer in the great outdoors.
I kind of answered both questions in the above statement, if it was confusing let me know.
Personally the way I would winterize the system would be blowing out the lines with air, it will take about the same amount of time when you’re having to flush the system. But it will save you some money on not having to buy any antifreeze, and you wouldn’t even have to change any of the water lines(shutoff valves). You don’t run the risk of damaging anything if there is nothing in the fresh water side of the system, you can just heat up your trailer like normal."
Hopefully that is helpful. My feeling is that any concern comes how RV antifreeze might react to the heat generated by the Alde. There are many brands of RV antifreeze and Alde and NuCamp can't know the specifications of all of them so it's easier to recommend keeping it out. But that's my supposition. We use the blow out method and the more this question comes up the more I'm glad we decided to do it this way.
John and Henrietta, Late 2016 [email protected]
S Max in Western New York