# Superheat Subcooling PT Chart — HVAC charging & PT chart

> HVAC charging & PT chart (iPhone/iPad app by HD YAPIMCILIK VE TEKNOLOJI ITHALAT IHRACAT TICARET LIMITED SIRKETI.)

- Source: https://appshunter.io/ios/app/superheat-subcooling-pt-chart/id6796341083 (this page in markdown: same URL + `.md`)
- Developer: [HD YAPIMCILIK VE TEKNOLOJI ITHALAT IHRACAT TICARET LIMITED SIRKETI](https://appshunter.io/developer/1871741424)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 10 MB
- Languages: American English, Arabic, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish and 1 more
- Released: 2026-08-05
- Data updated: 2026-08-10
- User reviews in markdown: https://appshunter.io/ios/app/superheat-subcooling-pt-chart/id6796341083/reviews.md

## What is Superheat Subcooling PT Chart?

The HVAC tech's superheat & subcooling calculator — charge diagnosis and PT chart in one honest tool.

Pick the refrigerant, enter your gauge pressure and line temperature, and read superheat, subcooling and saturation temperatures live. Choose the charging method — TXV/EEV (subcooling) or fixed orifice (superheat) — and get a clear verdict against the target: on target, check, or off target, with the direction: add charge or recover charge. A built-in PT quick-look table shows saturation temperatures around your reading, with separate dew/bubble columns for zeotropic blends.

Works in °F/psi or °C/bar — one global toggle.

FREE
• R-410A with full superheat, subcooling and TXV charge diagnosis
• PT chart around your gauge reading
• Share results as text

PRO
• All 7 refrigerants: R-410A, R-32, R-454B, R-22, R-134a, R-407C, R-404A
• Fixed-orifice target superheat table (indoor wet-bulb × outdoor dry-bulb)
• Save readings to history
• Share clean PDF reports

Built for gloves and rooftop sun: big keypad, huge results, Outdoor Bright mode.

Everything stays on your phone — fully offline, no account, no tracking.

Results are a field aid; always verify targets with the manufacturer's data.

———
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://hdappstudio.com/superheatcalc/privacy/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Superheat Pro — Monthly | $2.99 | per month |
| Superheat Pro — Yearly | $14.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Superheat Pro — Lifetime | $29.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-08-05

No release notes.

## More apps by HD YAPIMCILIK VE TEKNOLOJI ITHALAT IHRACAT TICARET LIMITED SIRKETI

- [Günlük Bulmaca](https://appshunter.io/ios/app/gunluk-bulmaca/id6779121521)
- [PureSweep](https://appshunter.io/ios/app/puresweep/id6779647705)
- [MetaSweep: EXIF & GPS Remover](https://appshunter.io/ios/app/metasweep-exif-and-gps-remover/id6796340822)
- [PureConvert: HEIC JPG PDF MP4](https://appshunter.io/ios/app/pureconvert-heic-jpg-pdf-mp4/id6796340908)
- [EV Charger Load Calc](https://appshunter.io/ios/app/ev-charger-load-calc/id6796341031)
- [VRF Refrigerant Charge Calc](https://appshunter.io/ios/app/vrf-refrigerant-charge-calc/id6796341058)

All apps by HD YAPIMCILIK VE TEKNOLOJI ITHALAT IHRACAT TICARET LIMITED SIRKETI: https://appshunter.io/developer/1871741424

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-10.*