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November 30, 2025
Charging and Testing Heat Pumps in Heat Mode
In this comprehensive HVAC training session, we cover Charging and Testing Heat Pumps in Heat Mode. Find out about essential installation practices that every technician needs to master, especially during the heating season. Learn the critical differences between charging a system and checking the charge, proper heat mode testing procedures, and why understanding wet bulb vs. dry bulb temperature is crucial for accurate diagnostics.
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This HVAC system we recently installed has been causing quite a bit of trouble for us with inspectors. If you look at the label, you will see that the breaker size is 25 amps, and the minimum circuit ampacity (MCA or wire size) is 29 amps. The MOCP (maximum overcurrent protection, max fuse, or max […]
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This tech tip about humidity control, particularly as it relates to VRF systems and others that use inverter technology, is a companion piece to a podcast episode with Roman Baugh. You can listen to that podcast episode HERE. Those of you who work in humid climates and install or repair ductless systems are probably well […]
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Every once in a while, especially on humid days, you’ll sit on an airplane waiting for takeoff and see fog pouring from the ceiling vents like a low-budget concert. Someone always panics and asks if something’s on fire. It’s not smoke—it’s condensation. You’re looking at thermodynamics and psychrometrics in action. So, why does it happen, […]
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