The MONSTER INTERIOR INSTANT WATER HEATING SYSTEM.  This dude delivers enormous amounts of hot water for large use customers.  Awesome power and incredible economics, this system delivers when you need lots of water fast.  The system requires venting, so call us for pricing on that.  It is surprisingly cheap!

Note, these machines can easily be linked into manifold-style systems that modulate each other.  Please call for details if you need multi-unit solutions for heating water.