Pipe Wrench Plumbing, Heating & Cooling, Knoxville, Tenn.

The Criniti family founded Zoom 21 years ago out of a spare bedroom with a little bit of borrowed money.

The company has grown from building and servicing residential to include large commercial, hydronic heating, residential and commercial fire sprinklers, design/build projects, and a complete service department ― Super Service Plumbing.

As for the fleet, Meehan says their vehicles are almost all Ford, and always have been.

As the name implies, Brothers Plumbing, Heating, Electric was founded by Marvin Kansteiner and his brother in 1980.

The design on their trucks makes a direct connection between individuals and home service providers and plumbers.

What originally began in 2007 as a remodeling company, founded by Edan Bar-Lev and younger brother Aviran Bar-Lev, branched off into plumbing in 2014.

Plumbing and Pipe Technologies, Raleigh, N.C.

Six years ago, he got the company involved in Green Plumbers USA because of his belief in the green initiative in plumbing.