Free online showcase.categorylabels.hvac calculators and tools. Browse and use all showcase.categoryLabels.hvac tools on Calciverse.
Compute air changes per hour for ventilation and indoor air quality.
Estimate heating and cooling BTU needs by room size and climate.
Find required CFM for rooms and ducts from load and airflow rules.
Size round and rectangular ducts for target velocity and pressure drop.
Size heating load for zones and buildings with design temperatures.
Calculate heating and cooling loads for equipment sizing and design.
Organize equipment, labor, and options for clear HVAC quotes.
Estimate payback and ROI for HVAC upgrades and replacements.
Find pump horsepower from flow, head, and efficiency.
Size refrigerant lines for capacity and line length.
Compare AC units by SEER and estimate savings from higher efficiency.