DuctWise HQ

HVAC guides for U.S. small offices and stores: rooftop units, service plans, hot and cold spots, replacement quotes and schedules.

Author: Raymond Castillo

Raymond Castillo spent thirteen years as a service technician and then a service manager for a commercial HVAC contractor in Phoenix, maintaining rooftop units on offices, clinics and strip-mall shops. He has climbed onto more hot roofs than he can count to find a failed capacitor that a ten-minute filter change would have prevented. He writes DuctWise HQ for the person who gets the call when the office is too warm.