14 calculators in this category.
Room Airflow from ACH Calculator Enter room volume and an air-change target to calculate the corresponding airflow. Bathroom Exhaust Fan CFM Calculator Use bathroom floor area, fixture counts, and the selected HVI guideline mode to estimate intermittent exhaust CFM. Makeup Air Balance Calculator Compare exhaust and replacement airstreams to estimate makeup airflow on the selected mass or volume basis. Mixed Air Temperature and Outdoor Air Fraction Calculator Use entering air conditions and mixing proportions to find mixed-air temperature or outdoor-air fraction. Sensible Heat Recovery Calculator Enter airflows, temperatures, and recovery effectiveness to estimate sensible recovery and leaving conditions. CO₂ Ventilation Estimate Calculator Use documented CO₂ concentrations or decay readings to estimate ventilation under the selected mixing model. Single-Zone Ventilation Rate Calculator Apply entered people, floor area, ventilation rates, and distribution effectiveness to find zone outdoor airflow. Outdoor Air Load Calculator Compare outdoor-air states and flows with target conditions to calculate cooling, heating, and moisture duties. Return Air Pathway Calculator Apply documented path curves to transfer airflow and pressure limits to find capacity and required path counts. Whole-Dwelling Ventilation Calculator (2019 Method) Enter dwelling area, occupancy, and documented credits to calculate ventilation using the selected 2019 method. Multizone Ventilation Calculator Combine zone occupancy, primary flows, and entered ventilation factors to calculate system outdoor-air requirements. Outdoor Air Louver Performance Calculator Compare louver catalog data with airflow, opening, pressure, and weather limits to identify eligible candidates. Commercial Kitchen Hood Exhaust Calculator Check proposed exhaust, supply, and installation dimensions against the entered hood catalog requirements. VAV Terminal Airflow and Selection Calculator Compare zone loads, ventilation, and exact catalog points to check terminal flow, pressure, and capacity margins.