Why Run Capacitors Fail in Summer — and How to Catch Them Before the Motor Dies When Quebec hits its first 30°C day, your phone rings. The compressor won't start. The condenser fan is humming but not spinning. The blower is sluggish. Nine times out of ten, you'll find the same culprit: a weak or dead run capacitor. Capacitors are the most common HVAC service call of the summer. They're also the most misdiagnosed component on the call. Techs replace motors that were never the problem — the dying capacitor...
Read more...
Why Condenser Fan Motors Fail in Summer When the first real heat wave hits Quebec, your phone starts ringing. The most common summer breakdown? A condenser fan motor that gave up under load. Unlike evaporator motors that fail at spring startup, condenser motors die in the middle of a cooling call — when temperatures climb and the unit needs to reject heat the most. A failed condenser fan motor means zero airflow across the condenser coil. Head pressure climbs, the compressor overheats and trips on high pressure, and the system...
Read more...
Drive belts are one of those HVAC components that don't get much attention — until they fail. A snapped or worn belt can shut down an entire air handling unit, leave a building without climate control, and turn a routine service call into an emergency. Understanding the different types of belts used in HVAC systems and knowing when to replace them can save you time, callbacks, and headaches.
Read more...
You're on site, the condenser fan motor just gave out, and the blade took a beating with it. Or maybe the blade is cracked, wobbling, or just not moving enough air anymore. Either way, you need a replacement — and it has to be the right one. Picking the wrong fan blade doesn't just waste a trip. It can overload the motor, reduce airflow, spike energy consumption, and shorten the life of the entire unit. Here's how to get it right the first time. The Five Specs That Matter Every...
Read more...
