18 Best HVAC Apps for Service Techs in 2020

Mike PersingerMay 4th, 2020
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As a modern-day HVAC tech, your job depends on your ability to reference the right information and resources when you’re assisting customers in the field. With the right HVAC service app, you can find vital information right at your fingertips with a tap on your smartphone.

To keep you on top of your game, we’ve compiled the best 18 HVAC apps for on-the-go technicians.

HVAC Calculator Apps

1. HVAC Buddy®

(iOS - $9.99; Android - $9.99)

This HVAC charging app gives users the deluxe version of the HVAC Check & Charge! HVAC Buddy is the all-in-one HVAC service app that keeps your techs working efficiently and safely. It’s highly rated for making HVAC work easier with its refrigerant charging and diagnostic capabilities. When servicing any kind of HVACR equipment, just whip out your HVAC troubleshooting app to accurately diagnose and calculate the proper refrigerant charge.

When you enter the refrigerant type, temperatures, and pressures, HVAC Buddy displays the “target, actual, and difference” for superheat, subcooling, and airflow. Send those numbers in an email with a personalized “System Status Report” for all of your service calls.

This HVAC service app won’t leave you hanging when it comes to airflow, either. It compares the targeted difference across the coil versus the actual (Delta-T or Target Evaporator Exit Temperature—TEET). It even offers a line chart, which displays historical values based on input changes or elapsed time. With real-time output for updated values and flexible units (psi, kPa, Fahrenheit, Celsius), HVAC Buddy is the heavyweight champion when it comes to HVAC jobs.

2. HVAC Refrigerant PT™

(iOS - $5.99; Android - $4.99)

Designed for the HVAC professional, the HVAC Refrigerant PT™ app offers readily accessible refrigerant information—from bubble and dew pressures to a full pressure/temperature (PT) chart. The HVAC app includes information for 33 different refrigerants. It also allows users to customize its settings to include refrigerant type, temperature (°F or °C), and seven different units of pressure.

With just a few taps, you can access information on classification, density, critical temps and pressures, ozone depletion potential, safety ratings, applications, and recommended lubricants. No matter where you’re working, use HVAC Refrigerant PT™ for quick refrigerant referencing.

3. Complete HVAC Dictionary Free

(free; available on Android only)

Everything you need to know about this HVAC service app appears in its name. The Complete HVAC Dictionary keeps you sharp on your HVAC terminology. Pull up this HVAC app when you’re looking for a clear definition or just to keep your vocabulary fresh.

It’s a quick and easy-to-navigate reference guide with more than 3,000 terms and definitions. Never miss a beat with its detailed descriptions for all sorts of terminology in heating, ventilation, and air conditioning.

4. HVACR Fault Finder

(iOS - Free; Android - Free)

Need help doing some on-site compressor troubleshooting? Look no further than the HVACR Fault Finder. This HVAC troubleshooting app allows you to problem-solve compressor electronic system failures with ease. Use this app for all of your air conditioning and refrigeration jobs.

You can choose to enter a flashing “alert” code or use the “tap” feature to identify the code from the electronic module. This code gives you access to its interactive troubleshooting guide. Browse the guide for a comprehensive treasure chest of troubleshooting “tips and tricks,” plus visual flowcharts that create a clear-solution path for diagnosing system errors. HVAC Fault Finder also gives you electronic product manuals and videos to aid in your problem-solving hunt. Leveraging CoreSense technology, HVAC Fault Finder is a hands-down winner in the HVAC app arena.

5. HVAC School

(iOS - Free; Android - Free)

Whether you’re an aspiring technician or current student of the trades, the HVAC School app is a no-brainer for novices. This amazing little HVAC service app contains an entire library of information to guide you through trade school. The app even reminds you of things you may have forgotten along the way—because let’s be real—this isn't just a trade, it's a science!

  • Listen to the HVAC School podcast—a key source of industry knowledge and anecdotes of what it means to be an HVAC tech.

  • Read articles from industry pros on major topics to keep your HVAC literacy sharp.

  • Punch in common equations you’d find in the field to build familiarity and deeper understanding of HVAC mathematics with an integrated calculator. It’s like a portable, personal HVAC tutor that doesn’t cost a thing!

6. HVAC Practice Test

One of the best HVAC educational tools around, techs can answer thousands of questions about up-to-date HVAC trends, track their progress and familiarize themselves with the latest ideas and terminology with this HVAC service app.

The app offers tests with more than 1,000 different questions written by expert HVAC tutors. Its in-app analytics enable users to track strengths and weaknesses, and it offers detailed progress statistics for every question.

Whether you want to test yourself to stay on the cutting edge of the HVAC trade or test new techs on their knowledge, you’ll find plenty of use for this app.

HVAC Calculator Apps

7. HVAC Check & Charge™ 

(iOS - Free; Android - Free)

Need a straightforward, on-the-job refrigerant charge calculator? From Emerson Climate Technologies, HVAC Check & Charge™ is a free and convenient mobile HVAC charging app that allows you to quickly calculate the right system refrigerant charge.

HVAC Check & Charge can be used for the following refrigerants:

  • R-22

  • R-410A

  • R-32

  • R-407C

  • R-134a

  • R-452B

  • R-454B

  • R-438 

Choose from the subcooling, superheat, or airflow calculators and enter the system temperature—plus the sensible load and latent load. Based on this information, the HVAC app determines the proper system charge and whether you need to make any other alterations based on the conditions. This HVAC service app also offers imperial and metric support.

8. iManifold™

(iOS - Free; Android - Free)

From the company that brought you one of the newest HVAC technology tools, the iManifold app allows HVAC techs to perform jobs with greater accuracy and superior efficiency. As described by iManifold, the HVAC service app “calculates HVAC/R system performance and troubleshoots system problems through user inputs and dynamic, live system data."

Choose from more than 40 refrigerants and equipment profiling options. This HVAC troubleshooting app comes equipped with live annualized savings analysis and BTUH (British thermal units per hour) breakdown on the gauge screen.

9. Refrigerant Slider by Danfoss

(iOS - Free; Android - Free)

The Danfoss Group, a leading manufacturer and service provider for refrigeration, air conditioning, heating, and more, applied its innovative engineering solutions to this HVAC and Refrigerant Slider app. It’s a no-frills mobile converter for quick and accurate pressure-to-temperature conversions.

The user-friendly converter covers 69 different refrigerants—all based on the National Institute of Standards and Technology (NIST) refrigerant properties. The HVAC app calculates conversions using the Antoine equation, which shows the semi-empirical correlations that describe the relationship between vapor pressure and temperature of pure components. 

In true Danfoss fashion, this app contains critical information, such as the Global Warming Potential (GWP) and Ozone Depleting Potential (ODP).

*Free on Google Play and the App Store

10. HyTools

(iOS - Free; Android - Free)

Brought to you by the expert in hydronic distribution systems and room temperature control, IMI Hydronic Engineering International created HyTools as a hydronic calculator app specifically designed for technicians in the HVAC field. 

This HVAC service app offers streamlined calculations and conversions especially for professionals who specialize in radiant heating and cooling systems.

Some of its standout features include:

  • Pressure maintenance and vacuum degassing calculation and selection for heating, cooling and solar systems

  • Dirt and air separator pressure drop calculation

  • Valve sizing and presetting

  • Radiator power estimation (panel and column)

  • Radiator valve sizing and presetting

11. ServiceTitan® HVAC Load Calculator

No matter which HVAC app you choose to add to your workflow, you’re definitely going to want to bookmark this handy ServiceTitan HVAC Load Calculator. An easy-to-use online calculator quickly gauges the BTU range for any particular dwelling. It factors in the interior square footage, amount of windows, and it even considers your region’s climate. This HVAC load calculator makes it easy to determine the HVAC system required.

(free on the ServiceTitan website)

Utility HVAC Apps

12. HVAC Duct Sizer

(iOS - $2.99; Android - $0.99)

Want to know the size of the duct by airflow or by dimensions? Maybe you want to know the range of duct sizes. With the HVAC Duct Sizer app, you can use the “constant friction” method to quickly size a range of duct sizes or focus on one HVAC duct run. 

This universal duct-sizing HVAC app is like the digital alternative to the traditional Trane Ductulator. Various modes allow you to input multiple parameters to find sizes that fall within the friction loss bounds. Additionally, you can further analyze all inputs and results from every mode by emailing them to yourself to read later.

The HVAC Duct Sizer app features several operating modes including:

  • Size by Airflow: Provides exact and rounded height/width dimensions, plus calculated velocity and friction loss.

  • Size by Dimensions: Gives the calculated duct friction loss when analyzing an existing duct system.

  • Range of Duct Sizes: Displays a certain range of duct sizes that fall within the friction loss bounds to satisfy your specified minimum and maximum friction loss and airflow values.

13. iHandy Level 

There are other leveling apps on the market, but this HVAC app is fully functional with calibration capability. It allows you to work easily around slopes, angles and verticals with your smartphone.

The free app comes with calibration instructions and includes woodgrain and lighting effects to enhance the user experience.

(iOS - Free; Android - Free)

HVAC Business Apps

14. CompanyCam

(iOS - Free; Android - Free)

The CompanyCam app enhances field-to-office communications by leveraging technology to deliver real-time images and so much more. This smart photo HVAC service app minimizes the need for technician-to-CSR phone calls, which clog up the phone lines for calling customers. It also provides a visual glossary of past work.

CompanyCam automatically organizes photos by location using GPS technology, so all photos are organized by job site for easy referencing. The CompanyCam app also helps identify photos with automatic timestamping. With tag and filter options, categorize photos in a way that makes sense for your company (i.e., A/C installation). Just like social media pictures, employees can comment, leave a voice note, or tag people on any photo.

This HVAC app helps home service companies mitigate any employee or customer disputes by providing visual evidence. It also gives owners and managers a bird’s-eye view of the company’s day-to-day operations without the interruption of uploading, emailing, or texting photos. The creators of CompanyCam built this app to facilitate on-site productivity and even help HVAC companies save money and time.

15. GEMAIRE HVAC Contractor Assist

(iOS - Free; Android - Free)

This app was created by GEMAIRE, an independent distributor for heating, cooling,  and refrigeration products since 1969. The company continues to be one of the biggest HVAC distributors in the country. The GEMAIRE mobile app gives HVAC technicians ready-to-use product information and tools right on their phone.

This innovative HVAC app offers a sign-in feature for a personal online account, much like you find on any major retailer’s website. Just sign in with Face or Touch ID, so you don’t need to remember a pesky password when you’re in the field or in front of a customer. The HVAC service app also lets techs see availability for nearby branches in real time, as well as up-to-the-minute status updates on arrival times for all equipment orders.

Filter for—and check availability on—the exact model and parts you need for the job. Search by system needs inside the app to find AHRI-matched systems with up-to-date inventory listings and pricing. The best feature of this app is the extensive database, which contains spec sheets, wiring diagrams, installation guides, and consumer literature for all GEMAIRE products.

16. CoolCloud HVAC

Okay, so the CoolCloud HVAC app is quite different than the other apps listed here. Brought to you by Goodman Manufacturing Company, L.P., this app allows you to connect and communicate via Bluetooth with Goodman® and Amana® air handlers and furnace control boards. This solution gives you remote, real-time information that will allow you to service and maintain customer equipment faster and better. Between configuration adjustments and diagnostic tests, CoolCloud HVAC helps techs ensure equipment’s energy efficiency and overall performance.

*Free on Google Play and the App Store

17. Carrier Enterprise HVAC Assist 

If you work with Carrier products, you’ll find this HVAC service app to be particularly handy. 

You can sign in to link to your online Carrier account, view prices, check orders, see real-time product availability and more.

Online reviewers of the app laud its user-friendliness and ease of looking up parts, along with its overall convenience.

18. ServiceTitan® Mobile

ServiceTitan® Mobile is the official mobile app of the ServiceTitan platform. Leverage the power of technology straight from your tablet while you’re with customers in the field.

ServiceTitan Mobile gives you the power to:

  • Help techs arrive fully informed.

  • Review detailed job histories.

  • Ditch missing paperwork.

  • Build estimates with just a few taps.

  • Manage pricing and product catalog.

  • Emulate the online shopping experience for homeowners.

  • Close sales on the job site. ServiceTitan developed this state-of-the-art HVAC service app to turn the tablet into your techs' favorite tool. You can customize the app with your company's forms and pricebooks, but ServiceTitan designed it to dazzle homeowners and help your team secure better sales.

How to Choose the Best HVAC App for You

When deciding exactly which HVAC service app to download, think about your professional needs and how often you'll actually use each one. If you’re considering paying a fee for an app, speak to your boss about covering the cost. All technicians have their own work styles, so the apps you choose should be unique to you.

Never underestimate the power of using a comprehensive troubleshooting guide or duct-sizing calculator right in your back pocket! You can learn, troubleshoot, calculate, and reference—all without interrupting your workflow.

ServiceTitan is a comprehensive HVAC business software solution built specifically to help service companies streamline their operations, boost revenue, and achieve growth. Our award-winning, cloud-based platform is trusted by more than 100,000+ contractors across the country.

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