HVAC Calculators

Refrigerant Charge Calculator Calculate the correct refrigerant amount for your system. Fill in your equipment details below. Get precise results. Line Set Length (ft) Line Set Size Select size3/8″ liquid line1/4″ liquid line1/2″ liquid line Unit Capacity (tons) Refrigerant Type Select typeR-22R-410AR-134aR-404A Factory Charge (oz) Calculate Charge Refrigerant Charge Results … Read more

Subcooling Calculator Measure your refrigerant’s subcooling level. Enter your system measurements below. Get accurate results instantly. Liquid Line Temperature (°F) Saturation Temperature (°F) Refrigerant Type Select refrigerantR-22R-134aR-404AR-410AR-407COther Calculate Subcooling Subcooling Results Subcooling Value: 0 °F System Status: – What This Means 0-5°F: Low subcooling (Possible undercharge) 6-12°F: Ideal range (Proper … Read more

Cooling Load Calculator Estimate the cooling capacity needed for your space. Get results in BTU/hr and tons. Room Information Room Length (ft) Room Width (ft) Ceiling Height (ft) Number of People Environmental Factors Climate Zone Hot/HumidWarmModerateCool Sun Exposure Heavy SunModerate SunShaded Insulation Quality PoorAverageExcellent Appliance Heat (watts) Calculate Cooling Load … Read more

Manual D Duct Sizing Calculator Calculate proper duct sizes for HVAC systems. Based on ACCA Manual D standards. System Information Airflow (CFM) Duct Type Flexible DuctSheet MetalFiberglass Duct Friction Rate (in. wg/100ft) 0.08 (Low Velocity)0.1 (Standard)0.12 (High Velocity) Duct Dimensions Duct Shape RoundRectangular Diameter (inches) Width (inches) Height (inches) Duct … Read more

Manual J HVAC Load Calculator Estimate heating and cooling loads for residential buildings. Follows ACCA Manual J standards. Building Information Total Square Footage (ft²) Average Ceiling Height (ft) Climate Zone 1 – Very Hot2 – Hot3 – Warm4 – Mixed5 – Cool6 – Cold7 – Very Cold Construction Details Wall … Read more

Superheat Calculator Measure your HVAC system’s superheat accurately. Prevent compressor damage and improve cooling efficiency. Suction Pressure (psig) Suction Line Temperature (°F) Refrigerant Type R-22R-134aR-404AR-410AR-407C Calculate Superheat Reset Values Superheat Calculation Results Saturation Temperature: — °F Actual Temperature: — °F Superheat: — °F Understanding Your Results Good superheat range: 8-12°F … Read more

Heating Load Calculator Estimate the heating needs for your space. Fill in the details below. Get instant results. Room Length (ft) Room Width (ft) Room Height (ft) Insulation Quality Select onePoor (old building)AverageGoodExcellent (new building) Window Area (sq ft) Lowest Outdoor Temp (°F) Desired Indoor Temp (°F) Calculate Heating Load … Read more