Raising the Efficiency Ceiling of Rooftop Units

For cooling requirements of up to 100-plus tons, rooftop units often represent a low-first-cost solution, based on equipment cost and relative ease of installation. Until recently, however, they have not been a particularly energy-efficient option....More
May 10, 2014

HVAC Building Controls: A Gateway for Hackers?1

For commercial facility owners and managers, building security today goes beyond access, fire, and and tenant safety. Cyber security has become one of the hottest issues they face and the mechanical systems engineer can be part of the solution....More
Dec 04, 2013

What Advice Would You Give to Controls Contractors?1

What advice would you like to give to controls contractors and their technicians?....More
Sep 30, 2016

Ebert’s Law and Engineering Content

In film reviews and his Movie Answer Man column, critic Roger Ebert would remind readers of Ebert’s Law, which states: “A movie is not about what it is about. It is about how it is about it.” At HPAC Engineering, we have been thinking a lot about how our content is about what it is about, which has inspired us to experiment with content....More
Jan 29, 2013

Condensing Hot-Water Boiler

The ClearFire-LC (CFLC) gives large facilities a condensing-hot-water-boiler option from 4,000 to 12,000 MBtu. The CFLC uses patented AluFer heat-transfer technology and a high-turndown burner with advanced controls to deliver peak efficiency and ultralow emissions in a compact footprint. The CFLC is a cost-effective alternative....More

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