HVAC Master Calc: Duct & BTU
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About this app
π§ HVAC Master Calc β The Field Reference for HVAC Technicians
Designed for professionals, HVAC Master Calc puts essential heating and cooling calculations right in your pocket. No manuals, no guessworkβjust fast, accurate results to save you time on the job.
Whether you're sizing ductwork on a new installation, checking superheat during a service call, or estimating BTU loads for a room, this app is built to handle the rigors of field work.
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π οΈ CORE FEATURES
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π CFM & Duct Sizing Calculator
- Calculate required CFM (Cubic Feet per Minute) based on room parameters.
- Determine optimal dimensions for round and rectangular ductwork.
- Supports standard and custom duct sizes for residential and commercial systems.
π‘οΈ Refrigerant PT (Pressure-Temperature) Charts
- Quick-lookup PT charts for common refrigerants (R-410A, R-22, R-134a, R-404A, R-407C, and more).
- Instantly find saturation pressure for any given temperature.
- Essential for charging, diagnosing, and servicing AC and refrigeration sets.
βοΈ Superheat & Subcooling Calculators
- Calculate target superheat for systems with TXVs or fixed orifice devices.
- Calculate subcooling to verify precise refrigerant charging.
- Built-in ranges help you assess system performance immediately in the field.
π BTU Load Estimator
- Estimate heating and cooling BTU requirements for individual rooms.
- Input dimensions, insulation levels, and climate zones for quick sizing.
- Ideal for preliminary equipment sizing and load verification.
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β‘ BUILT FOR THE FIELD
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β Offline Ready β No internet connection required. Use it in basements, rooftops, or remote sites.
β Tech-Focused Design β Clean, high-contrast interface designed for easy reading in bright sunlight.
β Time-Saving Utilities β Get results in seconds instead of running manual formulas.
β Lightweight β Small file size that doesn't drain your battery or waste storage.
βββββββββββββββββββββββββββββ
β οΈ PROFESSIONAL USE DISCLAIMER
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This application is a field reference and estimation tool intended for use by trained HVAC technicians. It does not replace formal engineering calculations, Manual J load reports, or manufacturer-specific data. Results are estimates based on standard HVAC formulas and should be verified by a qualified professional before making installation or design decisions. This app is not affiliated with ASHRAE, AHRI, or any government body. Always follow local building codes and safety regulations.
Designed for professionals, HVAC Master Calc puts essential heating and cooling calculations right in your pocket. No manuals, no guessworkβjust fast, accurate results to save you time on the job.
Whether you're sizing ductwork on a new installation, checking superheat during a service call, or estimating BTU loads for a room, this app is built to handle the rigors of field work.
βββββββββββββββββββββββββββββ
π οΈ CORE FEATURES
βββββββββββββββββββββββββββββ
π CFM & Duct Sizing Calculator
- Calculate required CFM (Cubic Feet per Minute) based on room parameters.
- Determine optimal dimensions for round and rectangular ductwork.
- Supports standard and custom duct sizes for residential and commercial systems.
π‘οΈ Refrigerant PT (Pressure-Temperature) Charts
- Quick-lookup PT charts for common refrigerants (R-410A, R-22, R-134a, R-404A, R-407C, and more).
- Instantly find saturation pressure for any given temperature.
- Essential for charging, diagnosing, and servicing AC and refrigeration sets.
βοΈ Superheat & Subcooling Calculators
- Calculate target superheat for systems with TXVs or fixed orifice devices.
- Calculate subcooling to verify precise refrigerant charging.
- Built-in ranges help you assess system performance immediately in the field.
π BTU Load Estimator
- Estimate heating and cooling BTU requirements for individual rooms.
- Input dimensions, insulation levels, and climate zones for quick sizing.
- Ideal for preliminary equipment sizing and load verification.
βββββββββββββββββββββββββββββ
β‘ BUILT FOR THE FIELD
βββββββββββββββββββββββββββββ
β Offline Ready β No internet connection required. Use it in basements, rooftops, or remote sites.
β Tech-Focused Design β Clean, high-contrast interface designed for easy reading in bright sunlight.
β Time-Saving Utilities β Get results in seconds instead of running manual formulas.
β Lightweight β Small file size that doesn't drain your battery or waste storage.
βββββββββββββββββββββββββββββ
β οΈ PROFESSIONAL USE DISCLAIMER
βββββββββββββββββββββββββββββ
This application is a field reference and estimation tool intended for use by trained HVAC technicians. It does not replace formal engineering calculations, Manual J load reports, or manufacturer-specific data. Results are estimates based on standard HVAC formulas and should be verified by a qualified professional before making installation or design decisions. This app is not affiliated with ASHRAE, AHRI, or any government body. Always follow local building codes and safety regulations.
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+212633526911
About the developer
wasmy abdelhamid
wasmyabdelhamid@gmail.com
Morocco
