NEMA Releases Guide to Understanding Smoke Control Systems

Provides an understanding of the purpose and general operational requirements for smoke control systems

The National Electrical Manufacturers Association (NEMA) has published NEMA SB 20-2015, Guide to Understanding Smoke Control Systems. This is a new standard that was developed by the NEMA Fire, Life Safety, Security, and Emergency Communications Section.

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XCSPEC Inc.: Monitoring System

Engineered based on California’s Title 24 requirements for economizer fault detection and diagnostics (FDD), EconomizerPro uses wireless sensors installed in air passages to measure inside air, outside air, and current. 

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Duct Dynasty: Residential Duct-leakage Testing

A properly executed duct-leakage test reveals a lot about an HVAC system’s health

Many professionals are wondering exactly what’s involved in this test, the equipment that’s needed, third-party testing, and how to pass these tests. Let’s take a look at some of the basics for residential duct-leakage testing.

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DOAS Gaining Traction in US

Codes, standards, and awareness boost the popularity of dedicated outdoor air systems

Commercial building codes are mandating higher volumes of fresh-air intake than ever before. To help meet these ventilation requirements, more and more HVAC contractors and building owners are turning to dedicated outdoor air systems (DOAS). 

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2015 HARDI Fly-In

Highlights from HARDI's Congressional Fly-In in Washington, D.C. Post date: May 28, 2015.


NEWSMakers: Kevin Conrad
Kevin Conrad, president, Kevin Conrad Heating and Cooling Inc., Nantucket, Massachusetts, breaks down working in the New England climate, the benefits of insulation foam, and more.

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2015 June 29

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Online Reviews

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2015 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

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