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Nailor Airwaves

Nailor Airwaves is your source for content on relevant topics concerning Nailor Industries, Inc. and the HVAC industry. New product releases, case studies, product & project spotlights, employee interviews, trade publication articles, and general announcements are some of the content types you can expect to find in the Nailor Airwaves.

VAV Systems: Ground Control to Major Tom

May 13, 2021

Choosing the right equipment for your VAV system is critical, but it is only part of creating the right solution. The specified control sequences for each terminal unit will ultimately have the largest impact on eliminating any SPACE ODDITIES. ASHRAE has issued standard control sequences for terminal units in Guideline 36: High-Performance Sequences of Operation for HVAC Systems. The goal of the guideline is to provide uniform sequences the industry can use to optimize HVAC system performance. The selection of control sequence for each...

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HVAC Ins & Outs with Dan Int-Hout - Measuring Air Speeds

April 28, 2021

The 1962 Air Diffusion Council Test Code 1062 required that room airspeed measurements be taken with an Anemotherm Air Meter. This was a battery-powered analog highly shielded hot wire anemometer, made by Reeves Hoffman, a sister company to Anemostat, located in Scranton Pa. It was the required instrument in the ADC 1062 test code, which was ”the bible” for air outlet measurements.  It was also the most popular and most readily available instrument for many years. It was, however, not without issues.


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VAV System Design: What is your style?

April 26, 2021

The Houston, Seattle, and Washington DC markets largely specify systems that utilize series fan-powered terminal units in all zones. Dallas and Portland, OR, specify parallel fan-powered units on the exterior with single duct units in the interior. The equipment and configuration of selected terminal units appear to be a matter of style. There are many reasons why different areas could have different design standards. Regardless, analyzing why you would select one style over the other could provide some value.

Equipment Reminder


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AHRI Recognizes Nailor for 3 Years of Success

April 22, 2021

The American Society of Heating Refrigeration and Air-Conditioning Engineers (ASHRAE) has developed standards that the industry uses to test their Terminal units (ASHRAE Standard 130) and Fan Coils (ASHRAE Standard 79).  These documents outline the standard procedure for testing each piece of equipment.  Standard 130 outlines terminal unit pressure drop and sound testing, while Standard 79 covers fan coil airflow and cooling/heating capacity testing.  Nailor performance data published in our selection software and catalogs are based on these standards. ...

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VAV Diffusers: The solution to some issues but the cause of others?

April 19, 2021

Over-cooling in the summer or over-heating in the winter can impact occupant comfort. There are several solutions for this issue. These include rebalancing the system, adding Terminal Units for those spaces, or adding a VAV Diffuser. The use of a VAV Diffuser requires an understanding of the design, how they work, limitations, and system considerations associated with the product.

VAV Diffuser

The Nailor UNI VAV diffuser enables the control of airflow into a room with a connected thermostat. The diffuser includes an actuator, linkage,...

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