HVAC Toolkit: PT & Superheat is a productivity app developed by Wallfacer.
Install Statistics
HVAC Toolkit: PT & Superheat has been downloaded 670 times. In the last 30 days, the app was downloaded 410 times.
User Ratings
HVAC Toolkit: PT & Superheat is rated 4.78 out of 5 stars. The rating is based on 29 ratings.
App Information
HVAC Toolkit: PT & Superheat is freely available from Google Play. The APK size is 26.17 MB. The latest APK version available is 1.0.13. The last update was on September 23, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play since August 2026.
Description by Wallfacer(from Google Play)
HVAC Field Toolkit is an offline field suite for residential and light-commercial HVAC techs in North America and Europe — charging math, PT lookup, psychrometrics, and EPA Section 608 study in one app, even without cell signal.
Not just another superheat calculator: work rooftops and mechanical rooms with a toolkit built for EPA-minded techs who need results they can share.
FREE TOOLS • Superheat and subcooling with °F/°C and psi/bar/kPa switching — TXV vs fixed-orifice paths • PT charts for common refrigerants — R-410A, R-32, R-454B, R-22, R-134a, R-448A, R-507A, R-717, R-290, and more • Zeotropic blends: bubble (liquid) and dew (vapor) so SH uses dew and SC uses bubble • Psychrometric calculator: dry bulb, wet bulb, dew point, RH, enthalpy, humidity ratio • Delta T, temperature/pressure converters, voltage drop • Refrigerant reference cards, favorites, and recent tools • One free PDF export preview to try job-site sharing
PRO — ONE-TIME UNLOCK ($9.99) • EPA Section 608 study: Core / Type I / II / III practice and timed exams • Target superheat for fixed-orifice charging (generic field chart — prefer OEM when available) • Named Jobs: save and reopen field calculations • Unlimited PDF reports to share with customers or the shop • Duct sizing (equal friction / Manual D–style helpers) • Airflow and run-capacitor checkers • Remove banner ads
BUILT FOR THE FIELD • Light and dark themes, readable industrial UI • Local history and favorites on device — no account for core tools • 18 languages for crews that work across regions
IMPORTANT Target superheat values are a generic approximation for fixed-orifice systems. Manufacturer charging charts (Carrier, Trane, Goodman, Lennox, and others) can differ. TXV and EEV systems should be charged by subcooling per OEM instructions. PT data is field-grade for service work, not a laboratory REFPROP substitute.
Download HVAC Field Toolkit — EPA study, offline PT/SH/SC, Jobs, and PDF reports in one $9.99 unlock.
Recent changes: • Replaced the bottom banner with compact native ads that blend into Home, Favorites, and Settings. • Tab bar stays clear — ads no longer sit above navigation while you work. • Bug fixes and stability improvements.
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