Ref Tools 4+

All-in-one HVACR app

Danfoss A/S

Designed for iPad

    • 4.0 • 28 Ratings
    • Free



Get the guidance, support, information, and tools you need—on the job and in the field. Ref Tools is a free app that contains essential tools every HVACR technician needs in their digital toolbelt.

Check out the latest update:

Our TXV Superheat Tuner app is now officially a part of Ref Tools. Fine-tune superheat in as little as 15 minutes and help your customers save money.

Download or update now to access 8 of our most popular and useful air conditioning and refrigeration tools in one spot:

Refrigerant Slider
As a featured part of Ref Tools, you get all the features and functionality that made Refrigerant Slider a hit with millions of installers around the world. Quickly calculate pressure/temperature ratios and find essential information on over 80 refrigerants.

TXV Superheat Tuner
Optimize superheat in less than 15 minutes. Using advanced algorithms, TXV Superheat Tuner provides valve-specific adjustment recommendations.

Low-GWP Tool
Find and compare climate-friendly refrigerants for retrofitting by checking compatibility with the TXV.

Get help diagnosing issues in refrigeration systems, so you can quickly identify symptoms and find recommended solutions.

Spare Parts
Access and order an extensive list of Danfoss spare parts and service kits for air conditioning and refrigeration applications.

Magnetic Tool
Test and troubleshoot solenoid valve coils quickly and easily.

Product Finder
Find extensive product-related data in one place. Search by product code number or product category to access and share product specifications, documentation, visuals, and more.

The workday can be full and the road long, so Ref Tools also provides you with some educational entertainment. You can subscribe and listen to podcasts, including the popular Chilling with Jens podcast, directly in the app. So, take a break and chill out a bit while learning something new about refrigeration.

In addition to giving you quick access to helpful tools, Ref Tools lets you track your most visited service sites and save unique settings for each one. You’ll save time and simplify each service call.

A little more about Refrigerant Slider
Refrigerant Slider, now a part of Ref Tools, helps you quickly calculate the pressure-to-temperature ratio for more than 80 refrigerants, including natural refrigerants such as ammonia and transcritical CO2. Refrigerant Slider also provides you with information about each refrigerant, including Global Warming Potential (GWP) and Ozone Depleting Potential (ODP). You can switch between the IPCC AR4 and AR5 values, where AR4 values are used in relation to the European F-Gas regulations.

Refrigerant Slider’s P/T calculations use extended curve–fitting models based on Refprop 10 results. You can also see both dew and bubble point for refrigerants with glide.

For app support, please use the in-app feedback function found in the app settings or send an email to

Engineering Tomorrow
Danfoss engineers advanced technologies that enable us to build a better, smarter and more efficient tomorrow. In the world’s growing cities, we ensure the supply of fresh food and optimal comfort in our homes and offices, while meeting the need for energy-efficient infrastructure, connected systems and integrated renewable energy. Our solutions are used in such areas as refrigeration, air conditioning, heating, motor control and mobile machinery. Our innovative engineering dates back to 1933 and today, Danfoss holds market-leading positions, employing 28,000 people and serving customers in more than 100 countries. We are privately held by the founding family. Read more about us at

Terms and Conditions apply for use of the app.

What’s New

Version 6.27.0

- General improvements and bug fixes

Ratings and Reviews

4.0 out of 5
28 Ratings

28 Ratings

Dawur ,

Please fix just a few things.

First of all I do love this app and appreciate it, it takes away the hassle of having to either carry around a P/T chart or look up each refrigerant individually which makes jobs a lot easier. The only thing that annoys me right now is that on my new iPhone 10 the list of refrigerants seems to be shifted upwards to where I cannot tap on the top of the list as it is blocked by the search bar, mainly R-12. I would greatly appreciate if this was fixed and can provide pictures if you need further evidence. Otherwise an invaluable tool for every HVAC/R tech.

Developer Response ,

Hi, would just like to inform you that an update went live today (18.11.19) that should resolve the issue iOS 13 caused with selecting refrigerants. This is a major update to the app, so we hope that you appreciate the changes. Please reach out if you experience any problems with the new version.

GimmyCash ,

Best one I’ve found

Although I would like to see R-11 in the next update. Also R-123 only goes down to 40 degrees.

Developer Response ,

Hi, would just like to inform you that in the latest update, R-11 is now available in the refrigerants list. Hope that improves your experience with the app. Please let us know if you have other suggestions for improvement.

MotoRebel ,

Best PT chart app!

Best PT chart app available for iPhone and believe me I’ve tried them all. Easily slide through P&R and change between dew and bubble at the flip of a switch. Lots of refrigerants

App Privacy

The developer, Danfoss A/S, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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