# HVAC Superheat & Subcooling

> PT Chart and Charge Verdicts

Canonical page: [https://chrome-stats.com/d/id6780412767](https://chrome-stats.com/d/id6780412767)

## Overview

- **ID:** `id6780412767`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** 光 杨
- **Category:** Utilities
- **Version:** 1.0.2
- **Last updated:** 2026-09-17
- **First published:** 2026-06-27
- **Size:** 1.75 MB
- **Data as of:** 2026-09-21
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/hvac-superheat-subcooling/id6780412767)
- **Privacy policy:** [https://apple-privacy-sites.pages.dev/apps/hvac-charge-check/privacy/](https://apple-privacy-sites.pages.dev/apps/hvac-charge-check/privacy/)

## Description

Offline HVAC charge verdicts plus saved service cards, visit history, and recorded comparisons for field notes.

HVAC Charge Check is an offline field calculator for service techs who need a fast refrigerant charge verdict on a live call.

Use it for:

• Superheat checks on fixed-orifice, piston, and cap-tube systems
• Subcooling checks on TXV and EEV systems
• Common refrigerants including R-410A, R-22, R-32, R-454B, R-407C, and R-134a
• Pressure-temperature reference for R-410A, R-22, R-32, R-454B, R-407C, and R-134a
• Clear Add, Hold, or Recover verdicts from field readings
• Save local service cards with unit, visit, date, readings, verdict, and optional technician note
• Compare a later card with the previous matching visit using descriptive reading changes
• Copy a complete service note for your own field records

Why techs keep it on the truck:

• Opens straight to the charge workflow
• No account, no ads, no subscription, and no bulky HVAC suite
• Works offline in attics, basements, rooftops, and mechanical rooms
• Keeps readings and service cards on the device

HVAC Charge Check is a field utility, not a replacement for manufacturer charging procedures. Stabilize airflow and load, then follow equipment documentation when available.

## Rankings

- #1,711,647 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6780412767)