Flux HVAC vs PlainAuto

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.

PlainAuto explains your car — and the shop — in plain language. Whether you're a driver who wants to understand what that warning light means, or a technician who needs a quick torque spec, PlainAuto has you covered. CAR OWNER MODE • Warning Lights — what every dashboard light means, color-coded by urgency • Emergency Guide — flat tire, dead battery, overheating, fluid leaks, and more • DIY Repair Guides — step-by-step with tool lists and difficulty ratings • Maintenance Schedule — know exactly what's due and when • Cost Estimator — typical repair costs so you're never caught off guard • Mechanic Visit Prep — questions to ask, upsells to decline, your rights • Service History Log — track all maintenance, repairs, and costs over time • Seasonal Prep — winterizing, summer prep, pre-road-trip checklists • Fluids Guide — engine oil, coolant, brake fluid, transmission, and more • Buying & Selling Guide — pre-purchase inspection, trade-in, private sale tips MECHANIC / TECH MODE • OBD-II Code Library — 500+ codes with plain-language causes and fixes • Torque Spec Database — lug nuts, head bolts, drain plugs, suspension, and more • Repair Procedures — step-by-step with special tools and time estimates • Diagnostic Decision Trees — symptom-based troubleshooting sequences • Wiring Color Codes — by manufacturer (GM, Ford, Toyota, Honda, Chrysler) • Customer Explainer Cards — shareable cards that explain repairs in plain terms • Labor Time Estimator — standard labor times for common repairs • Parts Cross-Reference — cross-references across major brands • Fluid Capacities — by make, model, and year WORKS OFFLINE. No account required. No data collected.