#053
Air Conditioning BTU Calculator
Calculate BTU/h needed to cool or heat a room.
#054
Air Duct Calculator
Size air ducts for ventilation by airflow.
#055
Mechanical Ventilation Calculator
Calculate required airflow for ventilating a space.
#056
Air-to-Water Heat Pump Calculator
Calculate heat pump power for heating and hot water.
#057
COP and EER Calculator
Calculate energy efficiency of heating/cooling systems.
#058
HVAC Duct Sizing Calculator
Size ducts by constant pressure drop method.
#059
Grilles and Diffusers Calculator
Size supply and return air grilles.
#060
Refrigerant Gas Charge Calculator
Calculate refrigerant charge based on line length.