The app provides HVAC duct sizing using ACCA's Manual D, the ANSI standard for residential duct design. It offers features like zooming, locking the wheel, and taking snapshots for reference.
by Air Conditioning Contractors of America★ 3.313 ratingsUtilities$24.99Data updated 2026-09-18
Calculate sizes for rectangular and circular ducts by inputting maximum friction rate or velocity. Switch between calculation methods by tapping values. Convert between I-P and S-I units using a toggle switch. Export results for reference.
Calculate duct sizes based on airflow requirements and space constraints. Input dimensions and airflow rates. Generate reports with material estimates and installation guidelines. Export data for sharing or record-keeping.
Perform duct design calculations for rectangular, round, and flat oval shapes. Input dimensions and system parameters for accurate sizing. Verify calculations in real-time during field work. Sync with ASHRAE standards for reliable results.
The app calculates duct sizes for HVAC design professionals. It provides a list of even sized ducts that meet design criteria, allowing users to review options at various aspect ratios.
Calculate size for round or rectangular ductwork. Adjust airflow, diameter, width, or height using sliders. Enter values directly for precise measurements. Lock friction calculations for accurate results.
Fan Law Calculator allows users to input rpm, cfm, static pressure, and horsepower. Modifying one value recalculates the others. Ductulator helps size HVAC ducts by inputting shape, dimensions, air temperature, elevation, and roughness.
Calculate dimensions by converting circular to rectangular equivalents. Determine ventilation parameters including diameter, airspeed, airflow, and dynamic pressure. Compute pressure drop for straight sections and systems.
™ lets users input airflow, velocity, or friction to determine size. Calculate pressure drop and flow rate. Input dimensions for custom shapes. Export results and save calculations.
The app performs HVAC calculations for building energy use. It helps users calculate SFP, temperature efficiency, air velocity, duct dimensions, and pressure drop.
Perform basic calculations in portrait mode and scientific calculations in landscape. Use root, power, factorial, exponential, division, logarithm, and trigonometric functions. Features a flat UI design similar to built-in iOS apps.
The app sizes HVAC duct runs or a range of duct sizes using the constant friction method. Users can input airflow, dimensions, or a range of sizes to calculate results in English or Metric units.
Calculate for a specific conductor run or determine wire size based on and current carrying capacity. Limits wire size to and NEC ampacity. Supports AWG and KCMIL sizes only.