Best Hvac Check Charge Apps

250+ iOS apps curated and reviewed

4.3 avg rating

19 free apps

Updated September 2026

Looking for free hvac check charge apps? 19 of our 250+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Hvac Check Charge Apps (September 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	HVACR Check & Charge	Free	4.8★ (17K)	No	No	Sep 2026
2	SuperCool Slide Rule HVAC	Free	4.2★ (185)	No	No	Aug 2026
3	measureQuick HVAC	Free	5.0★ (5)	No	No	Aug 2026
4	Refrigerant Charge Calculator	Free	4.4★ (10)	No	Yes	Sep 2026
5	P-T Calculator	Free	4.8★ (52)	No	No	Aug 2026
6	Ref Tools	Free	3.9★ (52)	No	No	Sep 2026
7	Bluon HVAC	Free	4.8★ (4.5K)	Yes	No	Sep 2026
8	HVAC Calculator - FieldCalc	Free	—	No	Yes	Jul 2026

Top Picks for Hvac Check Charge

HVACR Check & Charge by Copeland LP

PT Charts Superheat Subcooling

Editor's Choice

🔍 Reference

4.8😊(17K ratings)

Free

This app provides an instant mobile refrigerant charge calculator for HVACR applications. It supports various refrigerants and allows users to calculate the correct system charge based on superheat, subcooling, or airflow, along with environmental conditions.

What We Love

🚀 Convenient
🚀 Great program
🚀 Reliable app
🚀 Easy and quick charging reference
🚀 Helps take away doubt when making a case
🚀 Quickly analyzes conditions and factors
🚀 Awesome Freon charging app
🚀 Revolutionary app
🚀 Very handy and easy to use
🚀 Best helper ever
🚀 Makes charging systems super easy
🚀 Very good for superheat calculation
🚀 Great reference
🚀 Most accurate charge for R410A and R22
🚀 Easy to use

Room to Improve

🐛 Pressure settings not helpful
🔒 Concerning privacy policy
🐛 Restricted temperature range
🐛 Crashes and bugs
🐛 Doesn't work on Apple Watch

SuperCool Slide Rule HVAC by Designstein, llc

Strong Contender

🔧 Utilities

4.2😐(185 ratings)

Free

This app offers a comprehensive suite of tools for HVAC technicians. It provides interactive guides, step-by-step repair instructions, and calculators for various HVAC calculations including superheat, subcooling, and duct sizing.

What We Love

👍 Great HVAC tool
👍 Informative slide rule
👍 Helpful for new techs
👍 Quick and simple
👍 Easy to use
👍 All in one app
👍 Invaluable in the field
👍 Pocket reference
👍 Good for duct sizing
👍 Helps customers understand issues

Room to Improve

🐛 Trial period issues
🐛 App expires frequently
🐛 Requires re-download
🐛 Not worth the trouble
🐛 App messed up
🐛 Scrambled charts
🐛 Junk app
🐛 Paid version still has issues
🐛 Free not free
🐛 No cost upfront
🐛 No way to purchase
🐛 Closes itself
🐛 No portrait mode
🐛 No friction rate selection
🐛 No quick duct sizing
🐛 Inaccurate altitude
🐛 Room calc issues

measureQuick HVAC by Manifold Cloud Services Ltd.

Connect. Perform. Prosper.

Worth Considering

📊 Productivity

5.0😐(5 ratings)

Free

This application helps HVAC technicians diagnose and repair systems quickly and accurately. It offers robust diagnostic tools to identify problems faster, leading to fewer callbacks and more satisfied customers. It supports various HVAC systems, making it an all-in-one solution for professionals.

What We Love

👍 Excellent diagnostic tool
🚀 Improves efficiency and standardization
💡 Elevates the HVAC industry
👍 Useful for both experienced and junior technicians
👍 Provides professional-looking reports
👍 Comprehensive and informative

Room to Improve

🐛 Frequent crashes and stability issues
🔒 Too much personal information required
💰 Overpriced, especially for the paid features
🔒 Restricting screenshot functionality behind a paywall
🔍 Overly complicated user interface

More Hvac Check Charge apps to explore

Refrigerant Charge Calculator

HVACR Check PT Chart Superheat

Free

This tool helps HVAC and refrigeration technicians quickly determine the correct refrigerant charge for various systems. It provides instant verdicts like 'Add,' 'Hold,' or 'Remove' based on superheat or subcooling measurements, supporting numerous refrigerants and unit conversions. The app functions offline and allows for saving job details and generating PDF reports.

Charge check by superheatCharge check by subcoolingLine-set charge estimation

🔧 Utilities

(10)

free with in-app purchases

P-T Calculator

by National Refrigerants Inc.

Free

This tool simplifies HVAC/R technician tasks by calculating pressure/temperature relationships, superheat, and subcool. It automatically adjusts for altitude and offers English/Metric units. Easily access favorite refrigerants and supplementary information.

Pressure/Temperature calculationSuperheat/Subcool calculationAutomatic altitude correction

This app provides HVACR technicians with essential tools and information for field service. It includes refrigerant calculators, troubleshooting guides, product finders, and access to spare parts. Listen to educational podcasts to enhance your knowledge on the go.

Refrigerant Slider for P/T calculationsSolenoid valve coil testing toolRefrigeration system troubleshooting guide

Access a vast database of HVAC models, manuals, and part lists to speed up your work. Utilize an AI-powered troubleshooting tool or connect with experienced technicians for real-time support.

500,000+ HVAC unit databaseManuals and part listsAI troubleshooting tool (MasterMechanic)

🔧 Utilities

(4.5K)

ad-supported

HVAC Calculator - FieldCalc

R-454B PT,Superheat,Duct,Load

HVAC Pressure/Temp Charts

Free

This tool provides HVAC technicians with instant access to pressure and temperature data for over 100 refrigerants. It allows users to input one value to find the other, view detailed refrigerant properties, and email comprehensive charts and data.

Pressure/temperature lookup for 100+ refrigerantsInput temperature to find pressure, or vice versaSlider control for precise value selection

PT Chart and Charge Verdicts

This app serves as a comprehensive resource for HVAC technicians, offering a podcast, tech tip articles, and interactive calculators. It aims to enhance knowledge of HVAC theory, industry updates, and essential mathematics for both current and aspiring professionals.

HVAC School podcast episodesTech tip articles by professionalsInteractive HVAC equation calculators

📚 Education

(81)

free

Danfoss Troubleshooter

Troubleshoot HVACR systems

Free

This app helps HVACR technicians diagnose and resolve system issues. It guides users through common symptoms, identifies potential causes, and recommends solutions. An offline database is available for use in remote locations.

Diagnose HVACR system issuesIdentify common symptomsRecommend solutions

by Daikin Airconditioning UK Ltd

Free

This app assists service engineers in the air conditioning industry with Daikin VRV, Altherma, Split, and Sky Air equipment. It provides tools for fault finding, including fault codes, refrigerant calculations, and diagnostic checks. The application also supports outdoor unit settings and operational procedures.

Fault code lookupAdditional charge calculationsPCB dip switch settings

HVAC Calculator & Reference

Free

This app provides HVAC inspection tools and guidelines for home inspectors. It helps estimate equipment age, size, and requirements, giving inspectors confidence in their reports.

Equipment circuit requirements calculatorAC tonnage estimation by model numberHVAC manufacture date lookup

This app provides HVAC technicians with instant access to product information, including warranty status, inventory, and technical specifications. It offers real-time support, order tracking, and helpful calculators to streamline job management and business growth.

Real-time product availability & pricingOrder status and notificationsVideo/Text technical support

📊 Productivity

(1.6K)

free with in-app purchases

Airkit: HVAC Calculator

Charging, ductulator, PT chart

by Fieldpiece Instruments

Free

This app connects wirelessly with compatible HVACR tools to help professionals troubleshoot, diagnose, and evaluate HVACR systems. It serves as a central hub for managing wireless tools and business solutions, linking your equipment to your jobs.

Wireless tool connectivitySystem troubleshootingDiagnostic capabilities

Connect . Install . Service

Free

This app streamlines HVAC installation and service for contractors. It offers Bluetooth connectivity for system setup and troubleshooting, along with comprehensive support for product information, warranty tracking, and locating resources.

Bluetooth setup and troubleshootingSystem monitoring and status checksAlarm diagnosis and history

Carrier® Service Technician

by Carrier Corporation

Free

This app helps HVAC/R technicians quickly identify and locate necessary parts for repairs on any equipment, whether for warranty or non-warranty services. It offers advanced tools for troubleshooting, system calculations, and accessing technical documentation, all from the job site.

AI Assistant for troubleshootingSystem Capacity CalculatorIntelligent Equipment Search

🔧 Utilities

(108)

free

FAQ about Hvac Check Charge

What are the best hvac check charge apps for iPhone?

HVACR Check & Charge tops our hvac check charge apps ranking as of September 2026, with a 4.8-star average from 17K App Store ratings, and it's free to download.

Are there free hvac check charge apps for iPhone?

Yes — 19 of the top hvac check charge apps we rank are free to download, including HVACR Check & Charge and SuperCool Slide Rule HVAC.

Does HVACR Check & Charge have ads or in-app purchases?

HVACR Check & Charge has no ads and has no in-app purchases, according to its App Store listing as of September 2026.

How many hvac check charge apps are on the App Store?

We track 250+ hvac check charge apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.

What does the HVACR Check & Charge app do?

This app functions as an instant mobile refrigerant charge calculator specifically designed for HVACR applications. It helps contractors determine the correct system refrigerant charge for various air conditioning and refrigeration systems by considering operating conditions and environmental loads.

What are the key features of this refrigerant calculator?

Key features include calculators for superheat (non-TXV), subcooling (TXV), and airflow. It also provides PT Charts (Pressure/Temperature) and can find a superheat target using psychometric calculations. The app supports a wide range of refrigerants and offers both Imperial and Metric units.

Best Hvac Check Charge Apps

Compare top Hvac Check Charge Apps (September 2026)

Top Picks for Hvac Check Charge

What We LoveHighlights summarized from real App Store user reviews

Room to ImproveCommon complaints summarized from real App Store user reviews

What We LoveHighlights summarized from real App Store user reviews

Room to ImproveCommon complaints summarized from real App Store user reviews

What We LoveHighlights summarized from real App Store user reviews

Room to ImproveCommon complaints summarized from real App Store user reviews

More Hvac Check Charge apps to explore

FAQ about Hvac Check Charge

What We Love

Room to Improve

What We Love

Room to Improve

What We Love

Room to Improve