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November 1, 2026
Why VRV/F Systems Fail: Bad Sensors, Poor Maintenance & Transformers
Why do VRV/F systems fail, and where should you start on a service call for equipment you haven’t worked on much? In this video, our techs walk through how they approach VRV and VRF troubleshooting in the field. They cover everything from the first conversation on site to the point where you pick up the phone for backup.
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One aspect of motor selection that can get overlooked is motor bearings, and it can have big consequences. Sleeve bearings are most common in residential and light commercial applications because they are less expensive and quieter. They don’t have rolling “balls” but rather rely on a thin film of oil on metal sleeves. Sleeve bearings […]
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All fuel-burning appliances require oxygen to burn. They require sufficient oxygen to burn cleanly and safely, without soot and CO (carbon monoxide). I see many open combustion furnaces jammed into tight closets and mechanical rooms with little thought or planning regarding combustion air. I live and work in Florida, where most of our fuel-burning appliances […]
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An informed customer can make our job easier. When someone understands what they’re asking for, we can have a better conversation about what’s possible and what isn’t. Most customers who research a problem, including those who use AI, are trying to understand what’s going on. They’re willing to hear what they may have missed. Then […]
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