Dan Bernoski First Class Plumbing and heating gets the job done. They are available 24 hours for an emergency situation. It is a locally owner business that caterers to all of Mercer County New Jersey. Besides all plumbing needs, they also work on Water heaters, Radiant Heat, Boilers, Gas Line Installations, Sewer Line Replacements, Drain Cleaning and Sewer Line Video Camera Inspections.