As more and more families depend on out-of-home childcare, the expectations for quality care have steadily risen, including those regarding the facility itself. The requirements that pertain to such facilities are important, and good air quality is at the top of the list. There are so many sources of indoor air pollution in childcare facilities that the air is considered to be as much as five times more polluted than outdoor air! Children are more susceptible to the effects of contaminated air because they breathe in more oxygen relative to their body weight than adults. Therefore, it’s essential that kidcare facilities invest in a good heating, ventilation and cooling system, one that maintains low indoor air pollen levels through sufficient ventilation and filtration. In some parts of the country, natural ventilation can be an energy-efficient way to supplement an HVAC system. That said, uncontrolled ventilation with outdoor air can allow outdoor air contaminants to bypass any HVAC filter. Harmful airborne particles can include pollen, mold, creature dander, pesticides, and bacteria. The ventilation aspect of the HVAC system should be rated using a Minimum Efficiency Rating Value to ensure that correct air quality is provided in addition to extending the longevity of the HVAC system itself. Although a regular HVAC system has numerous controls, the control of outdoor air quantity may not always be managed; however, daycare facilities should demand that this feature be included in their HVAC system. The duct systems should also be dirt- and moisture-free to prevent mold growth–attention to this aspect cannot be emphasized enough. Finally, the HVAC business that designs the system for the facility should take care to label all its components to help the facility personnel properly operate and maintain the system.