Author Archives: Aaron H. Benetti

About Aaron H. Benetti

Aaron H. Benetti an HVAC technician who has worked in the field since 1991. He began his career as an HVAC installer and later began doing troubleshooting and repairs. Around 2010, he began to write books on HVAC topics, mainly tutorials and how-to information. Currently, Aaron works as an HVAC tech and also writes many articles and posts for websites as well as books and videos on HVAC topics.

Mini Split E5 Error Code What It Means and How to Fix It

The E5 error code on a mini split air conditioner indicates a communication problem between the indoor and outdoor units. This code appears on the display of inverter air conditioners and shows up across many brands and models. The most common causes are wiring issues, failed communication cables, or problems with the circuit boards in… Read More »

Types of Water Column Gauges for Gas Furnaces

Inches of Water Column is a method to measure gas pressure. The first devices to measure gas pressure were tubes in a U-shape, half-filled with water. The gas pressure was applied to one side of the tube from a gas line, and the other side was left open. How far the gas pressure pushed the… Read More »