National HVAC Tech Day is celebrated on June 22 in the United States to honor the contributions of heating, ventilation, and air conditioning (HVAC) professionals. This day recognizes the skilled technicians who ensure comfortable and healthy indoor environments, often working under challenging conditions. People are encouraged to express their gratitude to local HVAC technicians, learn about their essential roles, and acknowledge their impact on daily life. Typical customs include leaving positive reviews, offering small gestures of appreciation, and sharing experiences on social media using the hashtag #NationalHVACTechDay. Various companies may also run appreciation programs or offer discounts on tools and services for HVAC professionals.