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The NEWS presents the top 40 HVACR professionals under 40 years of age who are accomplishing great things in their respective positions. This is the third year we’ve asked our readers to nominate the best of the best and, indeed, they did. We received 180 entries, and picking the top 40 was incredibly difficult.

According to multiple studies from the U.S. Environmental Protection Agency (EPA), four out of 10 homes built in the U.S. contain improper HVAC designs and equipment.

Despite being recognized for significantly improving airflow and heat-transfer efficiency levels and lowering the costs associated with HVACR systems, ultraviolet light in the 253.7-nm germicidal C-band wavelength (UV-C) is often misunderstood and, therefore, under-utilized by HVACR contractors, mechanical engineers, and end users.

New rules dictating energy usage in walk-in coolers and freezers (WICF) will become law Sept. 7, according to a recently published final rule, courtesy of the U.S. Department of Energy (DOE).

The Model HBT-221 is a commercial-grade, rectangular, bubble-tight damper with square blades. It features a blade seal mechanically fastened to the blade that is field-replaceable; a flanged damper frame for easy mounting; and is available with a full range of electric, pneumatic, or manual actuator options.

SpeedClean’s Mini Split Bib Kit^® has seen success among HVAC contractors who are taking advantage of the growing popularity of mini-split systems. Contractors now can expand their service offerings and increase preventative maintenance (PM) revenue with a larger version of the popular maintenance solution. Just like the original, the Mini Split Bib Kit XL is used to quickly and safely clean mini-split coils and fans, just on bigger commercial units.

The CDC study screened 196 cooling towers around the U.S. and found Legionella DNA (indicating the bacteria were there, live or dead, at some point) in 164 of the towers sampled and live Legionella bacteria in 79 of them.

Thermal energy storage has been a proven commodity for years in Europe, but the technology has seemingly been on the peripheral of the HVAC industry in the U.S. Now, energy storage is gradually stepping into the industry spotlight, and manufacturers are ready and willing to showcase their offerings in this important space.

How can high-performance buildings be delivered at the pace, precision, and volume required to transform the building marketplace?

The Quincy Housing Authority (QHA) aimed to reduce the energy consumption of the its primary building, decrease its carbon footprint, and increase the comfort and durability of the buildings for residents.