by Choice Mechanical Team | Jul 24, 2026 | HVAC Articles
When one office is hot and the room next door is cold, the central air handler is not always the culprit. In many commercial buildings, the last device responsible for controlling airflow to each zone is a variable air volume box. If that VAV box cannot measure...
by Choice Mechanical Team | Jul 24, 2026 | HVAC Articles, Maintenance Articles
The equipment may still be running, and that is what makes the problem easy to underestimate. Condensation on diffusers or piping, musty odors, and a gradual loss of performance can continue long before a complete shutdown. Humidity that remains outside the intended...
by Choice Mechanical Team | Jul 24, 2026 | HVAC Articles, Maintenance Articles
A facility team may first notice dust streaks near joints. By the time that symptom is obvious, failed seams and joints or another system condition may already be affecting performance behind the scenes. Leaking supply or return ducts waste conditioned air and can...
by Choice Mechanical Team | Jul 24, 2026 | HVAC Articles, Maintenance Articles
It usually starts as one odd reading, one uncomfortable zone, or one alarm that clears before anyone reaches the equipment. Excessive resistance in a duct system forces fans and connected equipment to operate outside intended conditions. In an Indianapolis...
by Choice Mechanical Team | Jul 24, 2026 | HVAC Articles, Maintenance Articles
Commercial HVAC Short Cycling: Causes, Warning Signs, and How to Prevent Costly Equipment Failures If your commercial HVAC system starts, runs for only a short period, shuts off, and then restarts again minutes later, it may be short cycling. While the equipment is...