# RefCalc: Refrigerant PT Chart

> Superheat & Subcooling Calc

Canonical page: [https://chrome-stats.com/d/id6793166788](https://chrome-stats.com/d/id6793166788)

## Overview

- **ID:** `id6793166788`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Duong Nguyen Huu
- **Category:** Utilities
- **Version:** 1.0
- **Last updated:** 2026-07-30
- **First published:** 2026-07-29
- **Size:** 31 MB
- **Data as of:** 2026-09-22
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/refcalc-refrigerant-pt-chart/id6793166788)
- **Privacy policy:** [https://giavanghomnay.id.vn/refcalc/privacy](https://giavanghomnay.id.vn/refcalc/privacy)

## Description

Instant PT chart, superheat & subcooling for every refrigerant — now with A2L R-32, R-454B, R-452B. One-time purchase, fully offline, no ads.

RefCalc is the fast, offline Pressure–Temperature chart and Superheat/Subcooling calculator built for HVAC/R technicians — no subscription, no ads, one-time purchase.

CHECK CHARGE IN SECONDS
Enter suction pressure and suction line temperature to get instant superheat. Enter liquid line pressure and temperature to get instant subcooling. Color-coded results show at a glance whether you're in range.

FULL PT CHART, ANY REFRIGERANT
Type a pressure, get the saturation temperature. Type a temperature, get the saturation pressure. For blend refrigerants, RefCalc shows both bubble point and dew point plus the glide between them — the detail cheap PT apps get wrong.

BUILT-IN REFRIGERANTS
R-410A, R-32, R-454B, R-452B, R-22, R-134a, R-404A, R-407C, R-448A/R-449A, R-290, R-1234yf, R-513A — including the newer A2L mildly-flammable refrigerants (R-32, R-454B, R-452B) that older apps don't support.

WORKS YOUR WAY
• psi / bar / kPa / MPa
• Gauge (psig) or absolute (psia) reference
• °F or °C
• 7 languages: English, Spanish, Chinese, Portuguese, Japanese, Korean, Vietnamese

100% OFFLINE
No account, no internet permission, no analytics, no ads. Your data stays on your device. Buy once, use forever.

Refrigerant data sourced from NIST REFPROP and manufacturer/ASHRAE published PT charts. RefCalc provides the math — always confirm final charge against the equipment nameplate or OEM charging chart.

## Rankings

- #1,486,198 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6793166788)