# Ref Tools — All-in-one HVACR app > All-in-one HVACR app with tools, information, and support for technicians. (iPhone/iPad app by Danfoss A/S.) - Source: https://appshunter.io/ios/app/ref-tools/id472312541 (this page in markdown: same URL + `.md`) - Developer: [Danfoss A/S](https://appshunter.io/developer/423984644) - Category: Utilities, Business - Price: Free - Rating: 3.90/5 from 52 App Store ratings · 52 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 98 MB - Languages: American English, Danish, Finnish, French (France), German (Germany), Indonesian, Italian, Korean, Polish, European Portuguese and 7 more - Released: 2011-10-15 - Data updated: 2026-08-25 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/ref-tools/id472312541/reviews.md ## What is 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. Ref Tools offers a collection of 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. Magnetic Tool Test and troubleshoot solenoid valve coils quickly and easily. Troubleshooter Get help diagnosing issues in refrigeration systems, so you can quickly identify symptoms and find recommended solutions. 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. Spare Parts Access and order an extensive list of Danfoss spare parts and service kits for air conditioning and refrigeration applications. Low-GWP Tool Find and compare climate-friendly refrigerants for retrofitting by checking compatibility with the TXV. TXV Superheat Tuner Optimize superheat in less than 15 minutes. Using advanced algorithms, TXV Superheat Tuner provides valve-specific adjustment recommendations. Podcasts 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. 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. Streamline your workflow Ref Tools goes beyond just providing quick access to helpful tools; it helps you save time by allowing you to track your most visited service sites and save unique settings for each one. Simplify each service call with ease. Feedback Your input matters – we would love to hear it from you. We're committed to continuously improving Ref Tools to meet your needs. If you encounter a bug or have a feature suggestion, please use the in-app feedback function available in Settings. Alternatively, you can reach us via email at coolapp@danfoss.com. 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 www.danfoss.com. Terms and Conditions apply for use of the app. ## Key features - Refrigerant Slider for P/T calculations - Solenoid valve coil testing tool - Refrigeration system troubleshooting guide - Product data finder - Spare parts ordering - Low-GWP refrigerant comparison - TXV Superheat optimization - Educational podcasts ## Recent user reviews (10 of 52) All indexed reviews: https://appshunter.io/ios/app/ref-tools/id472312541/reviews.md ### 2/5 — Mac Mini M4 *2025-08-23, version 6.62.1* I was very pleased when I discovered this tool on the Mac M4 MacOS App Library. Until I installed and tried to run it. It CRASHED instantly. 🥴 Please fix it. ### 4/5 — App won’t work *2025-01-04, version 6.62.0.* App won’t open on iPhone. It used to work good and suddenly every time I try to open it, it crashes. Please fix it!! ### 2/5 — Disappears *2024-12-01, version 6.62.0.* When I tap on the app, Ref Tools app flashes up and disappears all within about a second. It works on my iPad but not on my iPhone. It is a nice app but I wish it would work on my iPhone. ### 5/5 — Good App *2024-11-29, version 6.62.0.* I always use this app.But just now I cannot open it , why? I was use iphone 6s plus. ios version is 15.8.3 .please reply to me. ### 4/5 — App won’t work *2024-11-28* App won’t open… ### 1/5 — New release no longer opens *2024-11-10, version 6.61.* Since the recent release, when I open the app, it immediately shuts off. No longer usable. Is it because it now requires most recent iOS? I have 15.6.1 on iPhone 8. ### 2/5 — Annoying *2024-08-30, version 6.45.0* Will not save on my phone Home Screen have to open the App Store ever time I want you use it ### 5/5 — Amazing App *2024-08-14, version 6.45.0* I just learned so many things by downloading it and taking a look at the app, unfortunately there is not alot of residential AC and it would be so helpful if there was more information about that too, like the troubleshooter but converted for Residential & Commercial. Overall is a great idea for an App like this that’s why 5 Stars ### 4/5 — Incorrect PT Charting for r134a *2024-01-15, version 6.34.0* I’ve been using this app for a long time and really like it never had any issues until now. I was looking up the saturation temperature for an r134a wine unit which had a 21° suction pressure and the app says it is -0.34°, which is incorrect. Can you fix this please? ### 5/5 — Love it *2023-12-13, version 6.34.0* The best refrigeration and hvac app on the market hands down. A must have for any tech anywhere. ## Frequently asked questions about Ref Tools ### What does the Ref Tools app do? Ref Tools is a comprehensive mobile application designed for HVACR technicians. It offers a suite of essential tools, including a refrigerant slider for pressure/temperature calculations, a magnetic tool for solenoid valve testing, and a troubleshooter to help diagnose refrigeration system issues. The app also provides access to product information, spare parts, and low-GWP refrigerant comparisons. ### What are the key features of Ref Tools? Key features include the Refrigerant Slider for calculating pressure/temperature ratios for over 80 refrigerants, a Magnetic Tool for testing solenoid valve coils, a Troubleshooter for diagnosing system issues, a Product Finder for accessing product data, and a Spare Parts section for ordering components. It also offers a Low-GWP Tool for comparing refrigerants and a TXV Superheat Tuner for optimizing valve performance. Additionally, users can listen to educational podcasts within the app. ### Is Ref Tools free to use? Yes, Ref Tools is a free application. The description explicitly states that it is a 'free, powerful app' and does not mention any costs associated with its use or any in-app purchases or subscriptions. ### What kind of devices is Ref Tools compatible with? While the description does not specify exact operating system versions, it is presented as a mobile application for use 'on the job and in the field.' This implies compatibility with smartphones and tablets running common mobile operating systems like iOS and Android. ### How can Ref Tools help an HVACR technician in their daily work? Ref Tools streamlines daily tasks by providing quick access to critical information and diagnostic tools. Technicians can use the Refrigerant Slider for accurate P/T calculations, the Troubleshooter to quickly identify and resolve system issues, and the Product Finder to access specifications and documentation. The app also helps in optimizing system performance with the TXV Superheat Tuner and facilitates ordering spare parts, ultimately saving time and improving efficiency on service calls. ## Version history (last 5 releases) ### 6.77.2 982 — 2026-08-24 Various bug fixes and performance improvements. ### 6.73.1 — 2026-01-30 Performance improvements and bugfixes ### 6.72.0 — 2025-11-30 - Smarter TXV  Superheat Tuner – upgraded algorithm nails the perfect superheat so your system runs more efficiently. - Built‑in Selection Tools – choose the right TXV, EXV, Filter Drier, or Solenoid Valve straight from the Tools tab or any Product Finder list. - Improved UI – redesigned screens and product tables for faster browsing and added exploded view drawings on Bock compressors - Plus loads of performance tweaks & bug fixes. ### 6.70.1 — 2025-08-28 - Smarter TXV  Superheat Tuner – upgraded algorithm nails the perfect superheat so your system runs more efficiently. - Built‑in Selection Tools – choose the right TXV, EXV, Filter Drier, or Solenoid Valve straight from the Tools tab or any Product Finder list. - Improved UI – redesigned screens and product tables for faster browsing. - Plus loads of performance tweaks & bug fixes. ### 6.62.1 — 2025-01-07 - Fixed bug that caused crashes on iOS 15 devices ## Apps similar to Ref Tools | App | Rating | Price | Category | | --- | --- | --- | --- | | [Carrier® Service Technician](https://appshunter.io/ios/app/carrier-service-technician/id1123086541) | 4.1 (108) | Free | Utilities | | [Embraco ToolBox](https://appshunter.io/ios/app/embraco-toolbox/id1100359824) | 3.0 (6) | Free | Utilities | | [ServiceTitan Mobile](https://appshunter.io/ios/app/servicetitan-mobile/id1037989976) | 3.0 (1,608) | Free | Utilities | | [Daikin Service](https://appshunter.io/ios/app/daikin-service/id571282882) | 3.6 (11) | Free | Utilities | | [Bluon HVAC](https://appshunter.io/ios/app/bluon-hvac/id1357521880) | 4.8 (4,450) | Free | Utilities | | [CORE Service](https://appshunter.io/ios/app/core-service/id1566612696) | 3.6 (19) | Free | Utilities | ## More apps by Danfoss A/S - [Installer App](https://appshunter.io/ios/app/installer-app/id423984641) - [ECL Comfort 310 Portal](https://appshunter.io/ios/app/ecl-comfort-310-portal/id486704541) - [Danfoss Troubleshooter](https://appshunter.io/ios/app/danfoss-troubleshooter/id499840638) - [KoolCode](https://appshunter.io/ios/app/koolcode/id563222728) - [Danfoss Spare Parts](https://appshunter.io/ios/app/danfoss-spare-parts/id584338203) All apps by Danfoss A/S: https://appshunter.io/developer/423984644 ## Related topics [danfoss ref tools](https://appshunter.io/ios/topics/danfoss-ref-tools) · [danfoss](https://appshunter.io/ios/topics/danfoss) · [danfoss refrigerant slider](https://appshunter.io/ios/topics/danfoss-refrigerant-slider) · [refrigerant slider](https://appshunter.io/ios/topics/refrigerant-slider) · [ref tools](https://appshunter.io/ios/topics/ref-tools) · [danfoss pt chart](https://appshunter.io/ios/topics/danfoss-pt-chart) · [danfoss slider](https://appshunter.io/ios/topics/danfoss-slider) · [danfoss magnetic tool](https://appshunter.io/ios/topics/danfoss-magnetic-tool) · [coolors srl](https://appshunter.io/ios/topics/coolors-srl) · [magnetic tool](https://appshunter.io/ios/topics/magnetic-tool) · [danfoss troubleshooter](https://appshunter.io/ios/topics/danfoss-troubleshooter) · [danfoss turbo](https://appshunter.io/ios/topics/danfoss-turbo) · [chilledwater delta](https://appshunter.io/ios/topics/chilledwater-delta) · [hvac pt chart](https://appshunter.io/ios/topics/hvac-pt-chart) · [pressure temperature chart](https://appshunter.io/ios/topics/pressure-temperature-chart) · [athflex](https://appshunter.io/ios/topics/athflex) · [pt chart](https://appshunter.io/ios/topics/pt-chart) · [julabo us](https://appshunter.io/ios/topics/julabo-us) · [supercool hvac](https://appshunter.io/ios/topics/supercool-hvac) · [bitzer refrigerant ruler](https://appshunter.io/ios/topics/bitzer-refrigerant-ruler) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*