Flux HVAC: Tech Calculator
华 陆 Utilities iPhoneiPadiPod touch
Flux HVAC: Tech Calculator is a free Utilities app for iPhone and iPad by 华 陆. Rated 5.0/5 from 2 ratings. Requires iOS 15.0. Updated December 17, 2025.
- Rating
- 5.0
- 2 ratings
- Price
- Free
- on the App Store
- Size
- 38 MB
- Age 4+
- Updated
- Dec 17
- 2025 · v1.0.0
Screenshots
About Flux HVAC: Tech Calculator
STOP GUESSING. START MEASURING. Flux HVAC is the modern, professional toolkit designed for the 2025 technician. We combined the essential tools into one lightning-fast app, helping you diagnose issues faster, charge systems accurately, and validate your work with confidence. Whether you are on a scorching roof or in a crawl space with no signal, Flux HVAC works 100% offline. KEY FEATURES: 1. PRECISION CHARGING - Superheat Calculator: Accurate targets for non-TXV (fixed orifice/piston) systems. - Subcooling Calculator: Precise liquid line verification for TXV systems. - Visual Indicators: Clear color-coded sliders tell you exactly when your charge is optimized. - Includes pre-loaded data for standard refrigerants (R-410A, R-22, etc.). 2. VISUAL DUCTULATOR (Duct Sizing) - Forget the cardboard wheel. Calculate round and rectangular duct sizes in seconds. - Interactive Visualizer: See the duct shape change as you adjust dimensions. - Velocity Alerts: Automatic warnings for high FPM to prevent noisy systems. 3. SYSTEM PERFORMANCE (Capacity Check) - Prove you fixed it. Enter Return and Supply air temps to calculate actual BTUs and Tons. - Verify Delta T, Enthalpy change, and Sensible vs. Latent cooling capacity. - The ultimate tool for "Verify & Bill." 4. PSYCHROMETRICS - Instantly calculate Relative Humidity (RH%), Dew Point, and Enthalpy. - Quickly diagnose humidity issues based on dry bulb and wet bulb readings. 5. CAPACITOR TEST (Under Load) - Test capacitors without disconnecting wires. - Input Volts and Amps to identify weak or failed capacitors before they damage the compressor. WHY CHOOSE FLUX HVAC? - Built for Speed: Large sliders and buttons designed for gloved hands. - Offline First: No internet required for calculations. - Visual Feedback: High-contrast interface designed for outdoor visibility. Download Flux HVAC today and carry a master technician's toolkit in your pocket.
App privacy
The developer, 华 陆, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to Flux HVAC: Tech Calculator
Looking for apps like Flux HVAC: Tech Calculator? Here are 6 similar apps on the App Store. The highest rated is Bluon HVAC (4.8/5), and all 6 are free to download.
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Refrigerant Charge Calculator
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IN HVAC Calculator
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Bluon HVAC
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Carrier® Service Technician
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Flux HVAC: Tech Calculator | 5.0 / 5 (2 ratings) | Free | December 17, 2025 | |
| Refrigerant Charge Calculator | 4.7 / 5 (25) | Free | Apr 27, 2026 | Compare |
| Ductulator - Duct Calculator | 4.5 / 5 (34) | Free | Aug 24, 2026 | Compare |
| IN HVAC Calculator | 4.1 / 5 (10) | Free | Apr 19, 2024 | Compare |
| Daikin Service | 3.6 / 5 (11) | Free | Jun 17, 2026 | Compare |
| Bluon HVAC | 4.8 / 5 (4,452) | Free | Oct 9, 2026 | Compare |
| Carrier® Service Technician | 4.1 / 5 (108) | Free | Sep 29, 2026 | Compare |