--- title: "Superheat & Subcool Calc - Reviews, Revenue and Downloads in United States | Apple App Store" description: "HVAC Superheat & Subcool Calculator is the professional field diagnostic tool for AC service and system commissioning. Calculate superheat, subcooling, and saturation for 10 refrigerants including R-4" --- # Superheat & Subcool Calc — United States > 10 Refrigerants Diagnostics ![Superheat & Subcool Calc App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/08/5e/ec/085eece9-3ef3-7393-cc51-13ae40ff2908/AppIcon-0-0-1x_U007emarketing-0-11-0-85-220.png/434x0w.png) **Developer:** [Rizvan Adzhoian](https://apptail.io/developer/rizvan-adzhoian-zsuKac) **Category:** Utilities **Rating:** 1.0/5 (1 ratings) **Price:** $0.99 **Bundle ID:** com.hvactools.superheatSubcoolCalculator **Store:** Apple App Store **Country:** United States **Version:** 1.0.8 (released 2026-06-11) **Original Release:** 2026-05-04 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6764646450) **AppTail Page:** [https://apptail.io/app/superheat-subcool-calc-LLBz/united-states](https://apptail.io/app/superheat-subcool-calc-LLBz/united-states) ## Superheat & Subcool Calc Description HVAC Superheat & Subcool Calculator is the professional field diagnostic tool for AC service and system commissioning. Calculate superheat, subcooling, and saturation for 10 refrigerants including R-410A, R-454B (EPA 608 transition), and R-32 with smart charge diagnostics and color-coded results for instant field diagnostics. FEATURES: Instant Superheat & Subcooling Calculation - Get results in seconds Smart Charge Diagnostics - Normal, Low, or High with recommendations 10 Refrigerants Supported - R-410A, R-22, R-454B, R-32, R-407C, R-134a, R-404A, R-507A, R-290, R-717 Metering Device Support - TXV (expansion valve) or fixed orifice Color-Coded Results - Green/yellow/red for quick decisions P-T Saturation Data - NIST REFPROP-grade, verified against manufacturer charts Zeotropic Blend Support - Correct bubble/dew handling for blends 100% OFFLINE: All refrigerant data built-in. Works on job sites without cellular coverage. HOW IT WORKS: 1. Select refrigerant (R-410A, R-454B, R-32, etc.) 2. Select metering device (TXV or fixed orifice) 3. Enter suction pressure & temperature 4. Enter liquid pressure & temperature 5. Get instant superheat, subcooling & charge diagnosis UNDERSTANDING RESULTS: Superheat - Temperature rise above saturation on low side. Normal 10-20°F TXV, 15-25°F fixed orifice. Low indicates overcharge; high indicates undercharge or low airflow. Subcooling - Temperature drop below saturation on high side. Normal 10-20°F. Low indicates undercharge; high indicates overcharge. DIAGNOSTICS: Green - Normal charge, optimal operation Yellow - Borderline condition requiring attention Red - Undercharge, overcharge, or airflow issue SUPPORTED REFRIGERANTS: R-410A (residential), R-22 (legacy), R-454B (EPA replacement), R-32 (mini-splits), R-407C (commercial), R-134a (auto AC), R-404A (refrigeration), R-507A (low-temp), R-290 (propane), R-717 (ammonia) OPTIONAL PRO UPGRADE — $2.99 ONE-TIME IN-APP PURCHASE The following features require a separate one-time in-app purchase. They are not required to use the calculator: • Unlimited saved calculation history • PDF export of results • Dark theme • Ad-free experience USE CASES: AC service calls, refrigerant charge diagnostics, equipment commissioning, troubleshooting complaints, EPA 608 certification study, preventive maintenance checks, system optimization, R-454B transition preparation. PERFECT FOR: HVAC technicians, refrigeration mechanics, AC contractors, HVAC apprentices, building engineers, commissioning specialists, HVAC students. All P-T saturation data from NIST REFPROP-grade equations of state, cross-checked against manufacturer charts, covering -60°F to +150°F, with correct bubble/dew blend calculations. Part of HVACTools Suite - professional HVAC technician tools for field service and diagnostics. ## Superheat & Subcool Calc Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/90/75/6c/90756cc1-c780-1502-4028-3eda6bf0617a/01_calculator_empty.png/1290x2796.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/44/8b/02/448b0242-1c96-399f-c898-047e5477a6dc/02_calculator_r410a.png/1290x2796.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/97/c4/2e/97c42e3e-56ef-58d4-ac1e-3c60ef88625c/03_calculator_r454b.png/1290x2796.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c4/fd/91/c4fd9101-894b-a808-ba38-eeb98e43a203/04_history.png/1290x2796.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/19/3c/db/193cdb50-3f32-69e2-6ca6-2527dd8eafc6/05_settings.png/1290x2796.png) ## Superheat & Subcool Calc Rating Breakdown in United States - 5 stars: 0 (0%) - 4 stars: 0 (0%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 1 (100%) ## Superheat & Subcool Calc In-App Purchases | Item | Price | |------|-------| | Pro Unlock | $2.99 | ## Apps Similar to Superheat & Subcool Calc - [UEi DTHA2](https://apptail.io/app/uei-dtha2-NOwd/united-states) - [HYmpulsion](https://apptail.io/app/hympulsion-Pvij/united-states) - [IN HVAC Calculator](https://apptail.io/app/in-hvac-calculator-YFuk/united-states) - [IP Finder - What is my IP](https://apptail.io/app/ip-finder-what-is-my-ip-XFKn/united-states) - [Refrigeration.AI](https://apptail.io/app/refrigerationai-NVVq/united-states) - [Fahrenheit Celsius Converter](https://apptail.io/app/fahrenheit-celsius-converter-eDAv/united-states) - [Flux HVAC: Tech Calculator](https://apptail.io/app/flux-hvac-tech-calculator-XkTx/united-states) - [HVAC Tools PT Chart - Gauge](https://apptail.io/app/hvac-tools-pt-chart-gauge-sTjz/united-states) - [Refrigerant Charge Calculator](https://apptail.io/app/refrigerant-charge-calculator-TXOz/united-states) - [HVAC Calculator: Load & Charge](https://apptail.io/app/hvac-calculator-load-charge-bufA/united-states) ## Superheat & Subcool Calc Available In - [United States](https://apptail.io/app/superheat-subcool-calc-LLBz/united-states) - [United Kingdom](https://apptail.io/app/superheat-subcool-calc-LLBz/united-kingdom) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. 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