BTU Load Calculator
Estimate room heating and cooling BTU load from area, ceiling height, insulation, and sun exposure for faster HVAC planning and equipment sizing.
Open calculatorHVAC Calculators
Sizing, airflow, duct, and efficiency calculators for quick HVAC planning.
Featured
AC Tonnage Calculator
Convert conditioned area and insulation assumptions into estimated BTU demand and AC tonnage to shortlist practical cooling capacity options quickly.
Open calculatorMini Split Sizing Calculator
Estimate a mini split BTU range from room size, ceiling height, and climate so technicians and homeowners can choose practical equipment faster.
Open calculatorCalculator Index
BTU Load Calculator
Estimate room heating and cooling BTU load from area, ceiling height, insulation, and sun exposure for faster HVAC planning and equipment sizing.
Open calculatorAC Tonnage Calculator
Convert conditioned area and insulation assumptions into estimated BTU demand and AC tonnage to shortlist practical cooling capacity options quickly.
Open calculatorMini Split Sizing Calculator
Estimate a mini split BTU range from room size, ceiling height, and climate so technicians and homeowners can choose practical equipment faster.
Open calculatorCFM Airflow Calculator
Calculate required airflow CFM from room dimensions and target ACH so HVAC teams can estimate ventilation and comfort airflow requirements quickly.
Open calculatorDuct Size Calculator
Estimate round duct diameter from airflow and velocity targets so installers can choose practical branch sizes during early layout and retrofit planning.
Open calculatorDuct Friction Loss Calculator
Estimate duct pressure loss from run length, fittings, diameter, and airflow so technicians can sanity-check static pressure assumptions quickly.
Open calculatorSEER Savings Calculator
Compare annual cooling energy use between existing and proposed SEER ratings to estimate operating-cost savings and support upgrade planning.
Open calculatorBaseboard Heater Size Calculator
Estimate required baseboard heater length from room conditions or known BTU load with hydronic and electric output assumptions.
Open calculatorBTU Tons kW Converter
Convert heating and cooling values between BTU/hr, tons, and kW for quick HVAC planning and equipment comparisons.
Open calculatorCFM per Ton Calculator
Estimate total system airflow from equipment tonnage and target CFM per ton for fast HVAC planning checks.
Open calculatorDuct Velocity Calculator
Calculate duct air velocity from CFM and duct dimensions for round or rectangular ducts.
Open calculatorEquivalent Length Calculator
Estimate total equivalent duct length from straight run and fitting counts for early static-pressure checks.
Open calculatorHydronic Flow GPM Calculator
Estimate hydronic flow rate (GPM) from heat load and temperature difference for water-based systems.
Open calculator