Plumbing & Mechanical Engineer

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Last month's column discussed piping for air-to-water heat pumps. A 2-pipe system allows staging but not simultaneous heating and cooling, while a 4-pipe system with motorized valves enables both modes of operation.

Formaldehyde, vital in resins and adhesives, poses serious health risks, with the U.S. EPA identifying 58 unsafe uses. Regulatory action is needed, but the impact of a potential second Trump administration on these regulations remains uncertain, highlighting concerns for public safety.

The Kitchen and Bath Industry Show (KBIS) will be held at the Las Vegas Convention Center from February 25-27, featuring over 670 exhibitors and showcasing innovative, sustainable products. KBIS 2025 is slated to be the largest show in history.

The AHR Expo, scheduled for February 10-12 in Orlando, will showcase trends like decarbonization and A2L refrigerants, with 1,865 exhibitors including Caleffi North America. Attendees can connect with experts and explore new products, while the Podcast Pavilion celebrates its five-year anniversary.

Parkway Construction Services chose REHAU RAUPEX piping with EVERLOC+ fittings for their plumbing renovation at Meharry Medical College, significantly reducing material and labor costs.

New York City’s Local Law 97 requires buildings over 25,000 square feet, including houses of worship, to improve energy efficiency by 2025. Compliance involves 13 low-cost measures focused on heating and lighting, promising significant energy and financial savings.

Steel pipe has long been the standard for fire protection systems, but chlorinated polyvinyl chloride (CPVC) is a safe, cost-effective alternative for Light Hazard applications. Despite its proven reliability, misconceptions about CPVC still exist.

A few examples of design approaches that a laboratory or research building may have to address potential contamination concerns within the building.

As businesses embrace sustainability, commercial heat pump water heaters (HPWHs) stand out as a smart investment. By utilizing ambient heat and optimizing energy use, these systems significantly cut operational costs and carbon emissions.

On Tuesday, February 18th, 2025, at 12 p.m. ET, participants will discover how advanced leak detection solutions can protect commercial and multi-family properties from costly water damage and minimize financial risk through seamless system integration.