Ref Tools

9.21K reviews
Content rating
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About this app

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.

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 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

Danfoss Climate Solutions
At Danfoss Climate Solutions, we engineer energy-efficient solutions to help the world get more out of less. Our innovative products and solutions enable a decarbonized, digital, and more sustainable tomorrow, and our technology supports a cost-efficient transition to renewable energy sources. With a strong foundation in quality, people, and the climate, we drive the energy, refrigerant, and food system transitions needed to achieve climate goals. Read more about us at

Terms and Conditions apply for use of the app.
Updated on
Feb 15, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App activity and 2 others
This app may collect these data types
Location, Personal info and 4 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

8.88K reviews
A Google user
August 16, 2019
favorite pt chart app, however it could use some improvements. I would like it if I could have a minimum of 2 pressure points displayed at any time for convenience. the ability to also enter info to calculate subcooling and superheat would be nice as well. Edit: Thanks, I will look into it. I know how to do the calculations in my head, I figured it would be nice to have it right there with my pt chart for visual aid.
67 people found this review helpful
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Danfoss A/S
August 19, 2019
Hi Darian, of course we understand it's nice to have everything all in one view. I can note this down as an additional feature request and see what we can do. If you'd like to participate in our alpha testing program please write to and perhaps we can work more closely together on new features to future versions of the app.
Ryan Bonigut
March 18, 2024
Very handy lookup for T&P for lots of different refrigerants. Even has glide details and so on.
1 person found this review helpful
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A Google user
November 23, 2019
A blinding white background for the refrigerant slider app is not the way to go, and neither is putting an easy-to-accidentally-hit shortcut on my phone's navigation bar that locks my screen. Both those are annoying and why your app is being deleted after using it for years.
1 person found this review helpful
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Danfoss A/S
November 24, 2019
Thank you for the feedback and we are sorry to hear that you are unhappy with the update. Could you provide some more details about why the white background doesn't work for you? Also, we have not added anything to Android's internal navigation bar so we are not sure what you are referring to in terms of what is locking your screen.

What's new

- General improvements and bug fixes