# CoolCalc - HVAC Tools — Superheat, PT chart & reports

> Superheat, PT chart & reports (iPhone/iPad app by 杰 陈.)

- Source: https://appshunter.io/ios/app/coolcalc-hvac-tools/id6773545951 (this page in markdown: same URL + `.md`)
- Developer: [杰 陈](https://appshunter.io/developer/1746018277)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 27 MB
- Languages: American English, Filipino, French (France), German (Germany), Hindi, Italian, Japanese, Korean, European Portuguese, Russian and 5 more
- Released: 2026-07-29
- Data updated: 2026-08-10
- User reviews in markdown: https://appshunter.io/ios/app/coolcalc-hvac-tools/id6773545951/reviews.md

## What is CoolCalc?

CoolCalc is the offline HVAC field toolkit built for service technicians — run the numbers, document the job, and hand your customer a professional PDF report, all without a signal.

  No account. No cloud. No subscription lock-in. Buy once, use it forever.

  8 FIELD CALCULATORS
  • PT Chart — Instant pressure-temperature lookup, including A2L refrigerants
  • Charge Check — Superheat & subcooling with built-in Target Superheat estimation
  • Duct Sizer — Size round or rectangular ducts by airflow and velocity
  • Airflow Quick Calcs — CFM, BTU, Delta T, tons, kW, and ACH in one tap
  • Static Pressure — TESP diagnostics checklist
  • Capacitor Test — Verify run/start capacitors against rated values
  • Refrigerant Log — Track charge added and recovered per job
  • System Quick Score — Fast health snapshot of the whole system

  A2L READY
  • Built for the 2025 refrigerant transition — R-32, R-454B and more
  • Safety-class flags and leak-check reference so you stay compliant

  CALCULATE → DOCUMENT → REPORT (the loop other tools don't have)
  • Save any calculation straight into a job record
  • Attach photos with captions, customer info, and system details
  • Generate a clean, branded PDF report and share via email, AirDrop, or any app

  REFRIGERANT REFERENCE
  • Quick PT data for R-410A, R-22, R-134a, R-32, R-454B and more
  • Field-ready tables you can check in seconds

  PRIVACY FIRST
  • No account, no server uploads — your jobs, photos, and reports stay on device
  • Camera and Photos access requested only when you need it

  PRO UPGRADE — ONE-TIME OR SUBSCRIPTION
  • Unlimited jobs and PDF exports, more photos per job
  • Full refrigerant reference library
  • Lifetime option: pay once, keep it for good

  Built by HVAC techs, for HVAC techs. Fast, focused, and made for the field — from the rooftop to the crawlspace.

  Terms of Use (EULA): https://sites.google.com/view/terms-of-use-for-coolcalc
  Privacy Policy: https://sites.google.com/view/privacypolicyforcoolcalc

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| CoolCalc Pro Monthly | $9.99 | per month |
| CoolCalc Pro Yearly | $59.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| CoolCalc Pro Lifetime | $99.99 | one-time |



## Version history (last 2 releases)

### 1.1.0 — 2026-08-05

This update makes CoolCalc a complete field toolkit:

  • 3 new calculators — Capacitor Test, Refrigerant Log, and System Quick Score
  • Target Superheat estimation added to Charge Check for fixed-orifice systems
  • A2L refrigerant support with safety-class flags for the 2025 transition
  • Faster, cleaner reports and refreshed dark-mode UI
  • Now available in 15 languages

  Everything still runs 100% offline. No account, no cloud. Thanks for the feedback — keep it coming.

### 1.0.0 — 2026-07-29

No release notes.

## More apps by 杰 陈

- [SceneSnap](https://appshunter.io/ios/app/scenesnap/id6775895510)
- [Electrician Field Kit: NEC](https://appshunter.io/ios/app/electrician-field-kit-nec/id6777354451)
- [AllergenScan - Allergy Guard](https://appshunter.io/ios/app/allergenscan-allergy-guard/id6780449705)
- [FocusFlow - ADHD Planner](https://appshunter.io/ios/app/focusflow-adhd-planner/id6780878336)
- [AdsPilot: ASA Campaign Tool](https://appshunter.io/ios/app/adspilot-asa-campaign-tool/id6788963166)

All apps by 杰 陈: https://appshunter.io/developer/1746018277

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*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.*