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About Ref Tools

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

Our latest tool, Product Finder, makes it easy to find extensive product-related data in one place—when and where you need it. Search by product number or category and then access and share product specifications, documentation, visuals, and more.

Along with Product Finder, Ref Tools includes six of our most popular and useful air conditioning and refrigeration tools:

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.

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

Troubleshooter
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.

The Chilling with Jens Podcast
The workday can be full and the road long, so Ref Tools also provides you with some educational entertainment. You can access the popular Chilling with Jens podcast directly in the app. 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.

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

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 www.danfoss.com.

Terms and Conditions apply for use of the app.

What’s new

Version 6.78.1 · Updated September 24, 2026

Translations fixes and performance improvements.

User reviews

Michael Buck
Michael Buck
Great app big help in many areas
Sunil J
Sunil J
Good 🙂
Love Law
Love Law
I love it 😍
Stefan
Stefan
I use this app so much, that I remember everything now as a mental image of the result.
Ahmad M.
Ahmad M.
EXCELLENT, nothing less. I mean What else in the world Especially the "Refrigerant Slider" It's a GREAT One.
Fred Rodo
Fred Rodo
To the mentors at Danfoss. I find this an invaluable tool in my training programs. It is a kick start for a Danfoss learning initiative in the students. Although I do use many more of your engineering guides, this is the most prolific interest generator. Great stuff DANFOSS

Frequently asked questions

What is Ref Tools?
Ref Tools is a free app that provides HVACR technicians with guidance, support, information, and essential tools for their work.
What is Product Finder?
Product Finder is a tool within Ref Tools that allows users to easily find extensive product-related data, including specifications, documentation, visuals, and more, by searching for product numbers or categories.
What tools are included in Ref Tools?
Ref Tools includes Refrigerant Slider, Low-GWP Tool, Troubleshooter, Spare Parts, Magnetic Tool, and access to the Chilling with Jens Podcast.
What is Refrigerant Slider?
Refrigerant Slider is a feature within Ref Tools that allows users to calculate pressure/temperature ratios and find information on over 80 refrigerants, including natural refrigerants and their Global Warming Potential (GWP) and Ozone Depleting Potential (ODP).
How can I diagnose issues in refrigeration systems with Ref Tools?
Ref Tools includes a Troubleshooter tool that helps users diagnose issues in refrigeration systems by identifying symptoms and providing recommended solutions.
Can I order spare parts through Ref Tools?
Yes, Ref Tools allows users to access and order a wide range of Danfoss spare parts and service kits for air conditioning and refrigeration applications.
What is the Magnetic Tool in Ref Tools?
The Magnetic Tool in Ref Tools is designed to test and troubleshoot solenoid valve coils quickly and easily.
Can I listen to the Chilling with Jens podcast through Ref Tools?
Yes, Ref Tools provides access to the popular Chilling with Jens podcast directly within the app, allowing users to take a break and learn something new about refrigeration.
Does Ref Tools have any additional features?
Ref Tools allows users to track their most visited service sites and save unique settings for each one, simplifying each service call.
How can I contact support for the Ref Tools app?
For app support, users can utilize the in-app feedback function or send an email to [email protected].
What does Danfoss do?
Danfoss engineers advanced technologies for refrigeration, air conditioning, heating, motor control, and mobile machinery. They aim to build a better, smarter, and more efficient future by providing solutions for energy-efficient infrastructure and connected systems.

Alternatives to Ref Tools

Looking for apps like Ref Tools? Here are 5 similar Android apps on Google Play. The highest rated is ElectroBox - Electronics (4.8/5), and all 5 are free to download.

Ref Tools vs. alternatives
App Rating Price Installs Last updated
Ref Tools 4.7 / 5 Free 1,000,000+ Sep 24, 2026
Low-GWP Tool – Free 50,000+ –
Bosch Toolbox 4.5 / 5 Free 1,000,000+ Jan 12, 2026
Hilti Mobile App 4.5 / 5 Free 100,000+ –
ElectroBox - Electronics 4.8 / 5 Free 1,000+ –
Danfoss Ally™ – Free 500+ –

Similar apps on Google Play