There is an optional package called YETI, or sometimes called Canadian Arctic Package, that includes heating pads for the holding tanks, heat tape on the underbelly portion of the fresh water feed line coming out of the fresh tank, and some additional insulation here and there.
Heartland can tell you what's in your trailer from the factory. Call Heartland Customer Service at 877-262-8032 / 574-262-8030. Have your VIN # ready.
It's possible to add these items locally. Could cost as much as $1500-2000 at a local dealer.
For more information about keeping the water running in extreme cold weather, take a look at our owner-written
Water Systems Winter Usage Guide.