Articles Tagged with ''Duct Dynasty''

In order to understand the foundational principles of duct sizing, a thorough study of ACCA Manual D is a great place to start.

Several months ago, I wrote a Duct Dynasty article titled “Four Steps to Optimize a Duct System.” Since then, I’ve received numerous requests to expand on the simple calculations I mentioned that can help you estimate room airflow with a customer’s input.

It seems our industry is becoming “commoditized,” and we are unintentional accomplices. We’re too comfortable swapping equipment and installing silver bullets while moving away from providing true comfort.

The air duct calculator, or “ductulator,” is a commonly used tool for designing and installing duct systems. Unfortunately, many designers and technicians receive limited instructions on its correct use.

Tackling winter humidity issues can be a nightmare if you don’t have a grasp on the foundational principles that influence them. Have you ever wondered what causes some homes to be too dry even with a properly operating humidifier?

It can be quite a challenging task, but these simple tips can alleviate some of the trouble.

A question I’m frequently asked is, where do you start when improving a poorly performing duct system? Do you tear it out and start over again, or is there an easier way? The good news is, there is a simple, logical pattern you can follow to optimize a duct system.

There is an epidemic in our industry of contractors trying to cram too much air through a filter that can’t handle it. It’s common to hear stories of 5-ton equipment trying to pull all its return air through a 16-by-25-by-1-inch pleated filter.

One of the most effective ways to measure airflow is through a method known as a traverse. While a traverse offers an accurate means of determining airflow, it is rarely used by HVAC professionals due to its intimidating nature.

While the equipment tonnage is often quoted on proposals, how can you be sure the equipment’s potential is really being achieved? Is it possible your installation practices are contributing to lost cooling efficiency? Let’s look at what causes lost tonnage and how you can ensure it’s not happening because of your company.