COVID-19 ASHRAE Indoor Air Recommendations

ASHRAE Recommends: • Increase outdoor air ventilation (disable demand-controlled ventilation and open outdoor air dampers to 100% as indoor and outdoor conditions permit). • Improve central air and other HVAC filtration to MERV-13 (ASHRAE 2017b) or the highest level achievable. • Keep systems running longer hours (24/7 if possible). • Add portable room air cleaners …

Why 55?

??? Why 55˚ ??? 100 years into the evolution of the air conditioning industry…. We now use objective criteria to determine the best supply air temperature for an air conditioning system, addressing the following concerns: • System Cost • Indoor Air Quality (IAQ) • Thermal Comfort • Energy Use Objective criteria for selection of a …