Pressure Drop Calculator: Calculate Pipe Pressure Loss (Free Tool) You are designing a piping system. Water flows through a long pipe. By the time it reaches the end, the pressure is lower. How much lower? Pressure drop is the loss of pressure as fluid flows through a pipe. It happens … Read more
Chiller Load Calculator: Size Your Cooling System Correctly (Free Tool) You are designing a cooling system for a building. You need a chiller. But how big? Too small, and the space never cools down. Too large, and you waste money on equipment and energy. Chiller load is the amount of … Read more
Duct Size Calculator: Find the Right HVAC Duct Diameter (Free Tool) Duct Size Calculator Calculate the perfect duct size for your HVAC system. Get accurate results in seconds. Airflow (CFM): Typical range: 100-2000 CFM Air Velocity (FPM): Recommended: 700-900 FPM for supply, 500-700 FPM for return Calculate Duct Size Round … Read more
CFM Calculator: Calculate Airflow for HVAC, Fans & Ventilation (Free Tool) You are installing a new exhaust fan. You are sizing ductwork. You are designing a ventilation system. How much air do you need to move? Airflow is measured in CFM – Cubic Feet per Minute. Too little airflow, and … Read more
Tons to BTU Calculator: Convert Cooling Capacity Instantly (Free Tool) You are buying an air conditioner. The specification says “3 tons.” But your friend’s AC is rated in BTUs. Which one is more powerful? A “ton” in HVAC does not mean weight. It is a unit of cooling capacity. One … Read more
Refrigerant Charge Calculator: Find the Perfect Refrigerant Level (Free Tool) 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 … Read more
BTU to kW Conversion Calculator Convert between British Thermal Units (BTU) and kilowatts (kW) for heating and cooling systems. BTU to kW kW to BTU BTU/hr: kW: Convert 0 BTU/hr = 0 kW Conversion Formula BTU to kW: 1 BTU/hr = 0.00029307107 kW kW to BTU: 1 kW = 3412.141633 … Read more
Retrofit Calculator – Will Your Home Upgrade Pay for Itself? Your home is old. The windows leak air. The walls have no insulation. The heating system is from 1995. You want to fix it. But you are scared. Will it cost too much? How long until you save money? Is … Read more
HVAC Load Calculator – Free Heating & Cooling Load Calculation Advertisement Google AdSense 728×90 Leaderboard HVAC Load Calculation Calculator Calculate heating and cooling loads for any space. Get accurate BTU requirements. Professional tool for homeowners and contractors. Free and easy to use. What is HVAC Load Calculation? HVAC load calculation … Read more
AC Tonnage Calculator This calculator helps you determine the right air conditioner size (in tons) for your room based on room dimensions, insulation, and other factors. Proper sizing ensures energy efficiency and optimal cooling performance. Room Length (ft/m): FeetMeters Room Width (ft/m): FeetMeters Room Height (ft/m): FeetMeters Number of Occupants: … Read more
