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Old 08-27-2013, 10:24 AM   #1
Join Date: Jun 2013
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Prevent a freeze

Anyone know anything about the "prevent a freeze" system? I have the manual in my suitcase if literature but not sure if I have the thing or how it works?? RFS

Mandalay 40B DP
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Old 08-27-2013, 10:39 AM   #2
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Try this:
Swan Industries, Inc.
'08 Mandalay Presidio 42B
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Old 08-27-2013, 12:21 PM   #3
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Wow.... $600 is high. We use a small impeller pump to pump common RV antifreeze throughout the house before we leave in the winter. A small drill powered pump will do the same job for less than $20. Slick marketing plus uninformed consumers makes for huge company profit. There's one born every day.
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Old 08-27-2013, 12:35 PM   #4
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Well, it does not smell of snake oil but the word "overkill" comes to mind, in light of how simple it is to do without this gadget.
Dave and Nola, RVM1
The Journey is Our Destination!
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Old 08-27-2013, 03:20 PM   #5
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Our 2007 Scepter came with it installed. Works great, but not worth the money as an after market add-on. Our unit is in the water bay close to the water pump with the controls mounted next to the city water inlet value.
Richard and Mary Lou
2007 HR Scepter, 42PLQ
Supply Corps, USN Retired
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Old 08-27-2013, 08:09 PM   #6
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We have a very similar system in our MH, and it is simple/easy to use. I doubt it would be so for a house, unless one plans to pump the water heater full while filling the water lines. We leave the heat set to 50*F while we are away in cold weather. It keeps moisture from settling into the house and causing a mildew smell upon our return too.
Ask your insurance agent, an unheated house deteriorates much faster than a heated house.
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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Old 08-27-2013, 11:44 PM   #7
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I agree the 600 dollar unit is a bit steep. On a motor home you can bye bypass valves and input valves for your pump. My motor home had the hot water heater bypass but not the input valve and hose to stick into the antifreeze. those were 40.00 or so and easy to install. when you have that in you just turn the bypass valve for the water inlet to your pump stick the hose into your antifreeze container turn on the pump and then run water through the system until pink stuff comes out does not get much easier than that. Since I do not see below zero temperatures just below freezing where I live and camp. When I am not using my motorhome I bought an adapter that has a garden hose male on one end and screw that into the water hose for the city water system and then the adapter has a quick disconnect male that fits into the air hose on my compressor. I set my regulator to 60 PSI so that I dont blow out any water lines then turn on the compressor go into the MH and start opening water valves one at a time until they have no water coming out. I do this to every valve and then go back around a couple of times until I do not see any water. I then go close the bypass for the hot water heater and pull the draing plug ( if you dont bypass the hotwater heater and have air in the system the drain plug comes out rather rapidly and forcefully do not ask me how I know this) After the plug is out I open up the bypass and let the compressor blow out the lines and any water left in the hot water heater.

The house system I think is just not practical for me. I have a 50 gallon hot water heater that would be kind of pricy to fill up. and I do not know how many gallons the two bathrooms and the washing machine and the kitchen would take. When we go on a trip we generally put a small oil filled electric heater in the bathroom and set those to about 50 or so it heats the floor and the pipes under the house enough to keep them from freezing. We then leave the heat pump on about 40 to keep the house just above freezing. Has worked well so far but like I said we deal with sub freezing temperatures not sub zero. Single digit temps are very rare here.
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