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For over a decade NCI has promoted the TSI VelociCalc 8386 as the best air balancing multimeter on the market, and it's still a great test instrument. It has served us well and was the instrument of choice, but is no longer manufactured. We are committed to bringing...
This year at HVAC Comfortech, David Richardson of Kentucky-based Richardson's Heating & Air and I gave a seminar about Performance-Based Selling. In just 90 minutes we attempted to cover what should have been a four day class. Actually we're in the process of...
by National Comfort Institute, Inc.
How many times in a week is your service technician placed in a situation where he or she finds a problem with a customer's system and when he approaches them with their options they're upset with the unexpected expense? You're stuck explaining options until they...
by Michael Weil
What is the Relationship between the Internet-of-Things and Performance-Based Contracting? by Mike Weil The secret of change is to focus all of your energy not fighting the old, but on building the new – Socrates One of the things I love about the HVAC Industry is its...
Interior Doors and Intermittent HVAC Comfort Problems by David Richardson This cooling season, HVAC professionals across the country will be called upon to solve intermittent comfort problems they can't recreate. These frustrating and random problems often involve...
by National Comfort Institute, Inc.
There's nothing more frustrating than not being able to balance a system when it was built without balancing dampers, and the plenum and take-offs are behind a finished ceiling. Here's a little trick we use to install dampers on critical ducts in finished basement...
by National Comfort Institute, Inc.
Rick Rohrbacher is the owner of Insight Air located in Phoenix Arizona. In addition to having his second daughter two weeks ago and moving into their new home two weeks from now, it's been a very busy spring at for Rick and the rest of his company. As we spoke with...
by Jim Davis
When an Induced Draft Appliance (Furnace, Boiler, Water Heater) is "Common Vented" with an Atmospheric Appliance, venting interference can occur. This procedure is the proper method to evaluate this situation and take all precautions to verify safety. Necessary tools...
by National Comfort Institute, Inc.
When measuring system or equipment temperatures, take your measurements as soon as the system stabilizes. This will allow your performance calculations to resemble (as close as possible), normal operating conditions. In order to keep the system running during testing,...
Adding the ducts to your service agreements is one of the best steps you can take to move your company forward in implementing air diagnostics. It's a small thing that can bring great and immediate results. Spring is the perfect time to implement this new service....
