The new American National Standards Institute (ANSI) standard governing flammable vapor ignition resistant (FVIR) water heaters has been in effect for less than a year, and plumbers around the country are still adjusting to the subtle differences found in the installation and maintenance of the units.

Proponents of air admittance valves want them added to the UPC code, but they face resistance from those who remain unconvinced.

Most of the thermostats in today's hot water heating systems have evolved from a long history of baseboard, fan coil or radiator heating systems. Using the right thermostat is key to optimal radiant performance and zone control.

The construction of a commercial kitchen is one of the most critical links in the efficient operation of a restaurant or food service facility-especially the plumbing system.

Many contractors in California are frustrated by continued resistance to the use of PEX piping. Despite a recent favorable court ruling, use of PEX in the state could still be up in the air. A look at both sides of the issue.

The intent in designing and installing sanitary drainage systems is to ensure they will function reliably, are neither undersized nor oversized, and are constructed from materials, fittings and connections whose quality is regulated by codes and standards.

This is the third and final part on drain and sewer cleaning safety

This is the second of a three part series on drain and sewer cleaning safety.

In April, Robert C. Richey resigned from his position as chief operating officer of American Plumbing & Mechanical Inc. and also walked away from the company he had built for 25 years.