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Think you know pump systems? Think again. From misidentifying the major culprits of ownership costs to taking the wrong approach in implementing variable speed drives, misconceptions around pumps create missed opportunities for greater efficiency and cost savings.

Two facets of building infrastructure have gained close attention in the wake of widespread disease: Indoor air quality and water quality within commercial structures. Adding to the problem of providing clean water, globally, are challenges posed by an aging municipal and commercial infrastructure.

The age-old question of function versus form has confounded experts in every field for countless decades.

Jeff Sweenor, president and CEO of Sweenor Builders in Wakefield, Rhode Island, looks at it differently. He asks, why not both? Function certainly comes first, but when the dust settles, his projects look as good as they work.

Heat pumps offer attractive solutions to energy-efficient heating and cooling, and the market is growing. According to a November 2021 report from the International Energy Agency (IEA), nearly 180 million heat pumps were used for heating in 2020, as the global stock increased nearly 10% per year over the past five years.

Scald protection valves are the last line of defense in protecting occupants from dangerously hot water in plumbing systems. Point-of-use mixing valves keep building occupants safe and enable a variety of important domestic hot water recirculation applications. How are designers using scald protection mixing valves to advance the broader topic of DHW recirculation?

Each year, Plumbing & Mechanical editors receive thousands of product releases from industry manufacturers. The 20 products highlighted here have earned the distinction of being PM’s Top Products of 2021 based on the number of page views on pmmag.com. Congratulations to those products on this year’s list.

Over the past 60 years, plastic piping materials have evolved from a new alternative to the material of choice for building and construction applications such as hot- and cold-water plumbing distribution, fire protection and mechanical systems like hydronics and chilled water.

As natural gas rates increase and the push for more sustainable energy sources intensifies, heat pump water heaters appear poised for massive growth. States such as California and Massachusetts already have regulations prohibiting or disincentivizing gas water heaters in new construction, and New York City recently enacted similar restrictions for new construction. So, are heat pump water heaters the future of the water heating market? Maybe or maybe not — but some industry experts certainly think so.

For years, environmental considerations and sustainability have influenced innovation in manufacturing, and in 2021, those factors became the driving force behind new product development.

Hot water has been around since man first harnessed the power of fire, but when at elevated temperatures, it is dangerous and even deadly. Today’s hot water heaters offer a diverse range of technologies that perform leaps and bounds ahead of their predecessors, but what temperature should they deliver?