Andrew Greaves

When I started in the trade in 1999, there were still many oilable blower motors in service. As part of the maintenance, we would remove the housing and oil the motor. We would also vacuum the motor and wipe it down. Before you pull the blower, shut off the power at the breaker or disconnect, […]

I’ve always opposed the practice of grabbing a hub puller as the first method of removing a blower. The video below by Brad Hicks with HVAC in SC on YouTube demonstrates the exact method I use to safely remove a blower wheel without damaging anything. Thanks, Brad! The Steps Kill the power. Pull the blower […]

Put three good tradespeople in front of the same problem, and you may see three different kinds of enthusiasm. One wants to understand why the system behaves that way. Another wants to get the failed part out and make the repair. The third is already thinking about the layout, access, and details that will make […]

 In this episode, Bryan is joined by Matthew Taylor, a supermarket refrigeration specialist whose expertise centers on CO₂ rack systems, and Andrew Greaves, Director of User Experience at NAVAC Tools, for the third installment of their series on triple-point evacuation. The conversation expands beyond water to bring CO₂ into the picture, exploring where the […]

 In this long-awaited live episode of HVAC School, host Bryan Orr reunites with three industry veterans — Jim Bergmann of measureQuick, Roman Baugh (Kalos), and Andrew Greaves of NAVAC — to tackle one of the most pressing and underaddressed challenges in modern HVAC: performing refrigerant recovery and system evacuation in extreme cold-weather conditions. The […]

Andrew Greaves joins us again from AHR 2020. This time, he discusses what mentors and role models do in our trade and why they’re important. Mentors are not just the grouchy senior techs who throw hammers at apprentices. Mentors have an active role in others’ professional development; they spend a lot of time with their […]