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If you’re a technician working in the Northwestern U.S., you’ve likely heard of David Norman. Chances are you may even have his phone number. The 58-year-old instructor has built quite a reputation as the go-to guy for HVACR technical problems in the region.

Over and over again, I have heard HVACR technicians and electricians quote rules of thumb regarding wiring sizing, and I have witnessed and participated in many heated debates on the topic.

Encased in a flexible, co-extruded jacketed composite material, K-Flex Titan offers excellent flexibility, abrasion and weather resistance, making it ideal for outdoor applications.

The NEWS introduces the latest heating equipment available for the upcoming winter season.

Like last year, this year’s Heating Showcase is split into two parts — residential and commercial. The residential/light commercial information is published in this issue, and the commercial products will be featured in the Oct. 2 issue. Feature-specific information about each individual product is included as submitted by the manufacturers.

These Wi-Fi-enabled, wall-mounted ductless split heating and cooling systems have efficiencies up to 33 SEER. The 9,000- (9RLS3Y), 12,000- (12RLS3Y), and 15,000-Btu (15RLS3Y) models offer HSPF ratings of up to 14.2, which make the entire line Energy Star-rated. All Wi-Fi-enabled systems offer remote operation using a smartphone or tablet as the remote control.

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.

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.