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NCI contractors have been testing and renovating duct systems for nearly a dozen years now. Every few years, we review the procedures and forms we provide to support your duct renovation work so they can be upgraded to keep up with the evolution of Performance Based...
by National Comfort Institute, Inc.
In the early days of NCI, one of our first sales tools we created was the NCI Comfort Survey. As our library of tools has grown over the years, this particular piece has continued to be an ongoing favorite. Many techs and salespeople use it when they first implement...
by David Holt
If You Don't Measure, You're Just Guessing by David Holt, NCI Director Sales & Service Leadership I’m a huge college football fan. When the games begin in late August, I’m either glued to the TV or I’m visiting football stadiums around the country enjoying some...
It's amazing how many contractors are still looking for a "Silver Bullet" solution to mold. Ideally we would have some magical pixie dust you sprinkle on a home or building to make it mold-proof, or better yet, to cure all existing mold issues forever. In this attempt...
As we are in the process of developing a commercial air and water balancing training and certification program for larger systems, we have been creating hydronic balancing forms and procedures. Water systems have been an integral part of commercial air conditioning...
by Jim Davis
Adjusting a Ball Valve on Intake of 90% Appliances by Jim Davis, NCI Senior Instructor In our combustion diagnostics class, we discuss short flues on condensing equipment as causing possible venting problems. We recommend adding a plastic ball valve to the intake of...
by National Comfort Institute, Inc.
The primary challenge in effectively measuring humidity is accuracy. The two major elements affecting accuracy are the reliability of your test instrument and the measurement technique that you use. Choose a good quality instrument. Many low cost instruments are...
HSER™ Season is Upon Us by Rob "Doc" Falke In May of 2004 we released the CSER ™ and HSER ™ procedures to NCI Members. With the success many members have enjoyed with CSER this summer, several members requested that we address HSER again this fall with additional...
by Jim Davis
Last month we brought you a red tag label that you can attach to an appliance when you disable it due to a safety hazard. This month we bring you its cousin, a yellow tag that is to be attached to equipment when you have made modifications or repairs to improve the...
How to Use Static Pressure Budgets by Rob "Doc" Falke, NCI President Static pressure budgets were originally developed to help new air diagnostic technicians interpret static pressure readings. These budgets provide a set of rules to compare pressure readings so they...
