National HVAC Tech Day is observed annually on June 22 worldwide to celebrate the professionals who ensure that heating, ventilation, and air conditioning (HVAC) systems function properly. Established in 2016 by ARS/Rescue Rooter, the day aims to express gratitude to HVAC technicians and highlight the importance of their work, which is often taken for granted. HVAC technicians play a crucial role in maintaining comfortable home environments, performing routine maintenance, and making emergency repairs. Their expertise not only helps regulate indoor temperatures but also contributes to energy efficiency and cost savings for homeowners. Celebrating this day involves showing appreciation to HVAC technicians, including sharing acknowledgments on social media using the hashtag #NationalHVACTechDay.