SDman - 5/18/2022 08:50 +1. I get a kick out of all the complaints on here about what a terrible system it is, unreliable, etc. I've got well over 100 of these machines out here and the only ones that don't work well are the guys that are too cheap to fix them properly. New heater valve & new software and they work as good as anything out there. Its the same system the Magnums have. I've got a handful of guys that put shutoff valves on the heater hoses. It takes more time to put those on than it does to change the heater valve and update ATC controller software. Then you are always opening/closing valves on days with cold mornings/hot afternoons.