Air Conditioning Appreciation Day is celebrated every July 3, recognizing the significant invention of air conditioning and its impact on health, comfort, and productivity globally. This day encourages individuals to appreciate the relief provided by air conditioning and to ensure their units are ready for the summer heat. Common customs include cleaning AC filters, checking vents, and scheduling professional tune-ups. HVAC companies often promote seasonal deals, offering discounts on new installations, maintenance plans, and energy-efficient systems. Retailers may also feature sales on portable AC units and related products. The day serves as a reminder of the importance of efficient cooling and the advancements in HVAC technology.