Some systems we work on and install will freeze. Air conditioning is not one of them.

Let’s look at some helpful “static” pressure tests you can use on the building side of the duct system to diagnose common problems.

We need to be aware of the possibility of severe pressure drops creating an issue for the system and how we analyze its operation.

In this troubleshooting situation we find ourselves dealing with a gas furnace, and the customer has said that “there is no heat at all.”

Becoming familiar with the most common problems will mean you can repair water heaters quickly and easily, a skill to add to your repertoire.

In this month’s troubleshooting situation, you are responding to a restaurant manager’s call for service, and the equipment is a walk-in freezer.

Trying to fix building problems with equipment can be a problem. Here are some basics to help you diagnose and solve building issues.

Several attempts have been made to solve the problem of one bedroom that is always too cool during the heating season.

The article provided valuable information on maintenance and cleanliness issues related to refrigeration equipment in restaurants and c-stores.

Controls have gone from mechanical to electrical, so we have systems that are controlled by analog electrical signals and digital electrical systems.