# HVAC Superheat Calculator

> Subcooling & R-454B PT Chart

Canonical page: [https://chrome-stats.com/d/id6761745516](https://chrome-stats.com/d/id6761745516)

## Overview

- **ID:** `id6761745516`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Shanghai Sheyuan Network Technology Co., Ltd.
- **Category:** Utilities
- **Version:** 1.0.4
- **Last updated:** 2026-09-03
- **First published:** 2026-04-07
- **Size:** 1.04 MB
- **Data as of:** 2026-09-19
- **Store listing:** [Apple App Store](https://apps.apple.com/ca/app/hvac-superheat-calculator/id6761745516)
- **Website:** [https://calcspec.com/app-privacy.html](https://calcspec.com/app-privacy.html)
- **Privacy policy:** [https://calcspec.com/app-privacy.html](https://calcspec.com/app-privacy.html)

## Description

R-410A liquid line 95F at 340 psi - subcool low or charge right? Superheat and subcool from built-in PT charts for R-410A, R-22, R-134a, R-404A. $4.99 one-time, no login.

On a service call and need to check superheat and subcooling without flipping through PT charts? Select your refrigerant (R-410A, R-22, R-134a, R-404A, R-32, or R-454B), enter suction and liquid line pressures and temperatures, and get instant color-coded readings: green for normal, yellow for marginal, red for out of range.

WHAT IT CALCULATES:
- Superheat (suction line temperature minus saturation temperature)
- Subcooling (saturation temperature minus liquid line temperature)
- Saturation temperatures from built-in pressure-temperature data

REFRIGERANTS SUPPORTED:
- R-410A
- R-22
- R-134a
- R-404A
- R-32
- R-454B

KEY FEATURES:
- Built-in saturation pressure-temperature data for all six refrigerants
- Color-coded status indicators for quick diagnosis
- Target range reference (10-15 F for both superheat and subcooling)
- Instant results as you adjust inputs
- Works completely offline
- No account or login required

Built for HVAC technicians, refrigeration mechanics, and service professionals who need fast, reliable superheat and subcooling checks during system diagnostics and charging.

## Rankings

- #1,656,087 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6761745516)