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Ref Tools

Ref Tools

All-in-one HVACR app

52 ratings
66 reviews
🔧 Utilities
💼 Business
Free

Details

  • Released
  • Updated
  • October 15, 2011
  • September 25, 2026

Features

Developer

Danfoss A/S
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Ref Tools screenshot #1 for iPhone
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Ref Tools screenshot #6 for iPhone
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About

This app provides HVACR technicians with essential tools and information for field service. It includes refrigerant calculators, troubleshooting guides, product finders, and access to spare parts. Listen to educational podcasts to enhance your knowledge on the go.

✓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
Show original description

What users say

Summarized from real user reviews of Ref Tools. Based on 52 reviews and a 3.9/5 average, it highlights the 26 positives and 39 negatives reviewers mention most about this Utilities app.

Positive things

  • 👍Useful tool for HVAC/R techs
  • 👍Great idea for an app
  • 👍Best refrigeration and hvac app
  • 👍Useful App for HVACR
  • 👍Brilliant app
  • 👍Invaluable tool for HVAC/R tech
  • 👍Best PT chart app
  • 👍Best one I’ve found
  • 👍Best PT chart app!
  • 👍Keep it simple layout
  • 👍Réglette utile pour frigoriste
  • 👍Useful for refrigeration
  • 👍Top notch comparator
  • 👍Great App for chiller engineer
  • 👍Brilliant app, quality & reliable
  • 👍Enfin une règle avec tous les fluides
  • 👍Faster and clever app
  • 👍Slick comparator
  • 👍Parfait pour les dépannages
  • 👍Bien l'application
  • 👍Typical Danfoss, Awesome!!!!
  • 👍Bonne appli, lecture direct
  • 👍Excellent app for A/C engineer
  • 👍Simple et efficace
  • 👍Usefull tool for HVAC/Refrigeration
  • 👍Good app

Negative things

  • 🐛Crashes instantly on launch
  • 🐛App won’t open on iPhone
  • 🐛Flashes up and disappears
  • 🐛Cannot open app
  • 🐛Immediately shuts off
  • 🐛Crash au lancement
  • 🐛Will not save to Home Screen
  • 🐛Incorrect PT Charting
  • 🐛Information doesn’t slide down
  • 🐛French translation not great
  • 🐛Refrigerant temp to psi off
  • 🐛SP22 drop in for R22 missing
  • 🐛Crashes on iOS12.1.4
  • 🐛App won’t open
  • 🐛I can no longer open this app
  • 🐛List of refrigerants shifted upwards
  • 🐛R-123 only goes down to 40 degrees
  • 🐛Stuck on R134a
  • 🐛R744A only goes to 60 psi
  • 🐛Scale did not go low enough
  • 🐛Now totally useless without R410a
  • 🐛Missing common refrigerants
  • 🐛Pointless without R410a and R407c
  • 🐛Scrolling R's sluggish
  • 🐛Missing certain gases
  • 🐛Still have no R22
  • 🐛What happened to ammonia
  • 🐛Not much good without R-22
  • 🐛Slider app don't have R124a
  • 🐛No longer lists Ammonia
  • 🐛Missing Refrigerants
  • 🐛Missing Ammonia and CO2
  • 🐛r410a is missing
  • 🐛Removed r22, 410a, and 407c
  • 🐛Refrigerants missing now
  • 🐛Last update removed slider for ammonia
  • 🐛Could do with scale going higher on Co2
  • 🐛Doesn't go into a vacuum on the scale
  • 🐛Gros bug avec le mise à jour
See all reviews

What's New in Ref Tools

6.78.1 (984)

September 25, 2026

Translation fixes and performance improvements.

User reviews

Most RecentHighest RatedLowest Rated

Mac Mini M4

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.
SvenoughSvenough

App won’t work

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!!
JoevennerJoevenner

Disappears

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.
dbud2dbud2

Good App

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.
NLA @ 2024NLA @ 2024

App won’t work

App won’t open…
JoevennerJoevenner
See 61 more reviews

Developer apps

Installer App
Installer App

Essential HVAC tools

🔧 Utilities

(7)

Free
ECL Comfort 310 Portal
ECL Comfort 310 Portal

by Danfoss A/S

🔧 Utilities
Free
Danfoss Troubleshooter
Danfoss Troubleshooter

Troubleshoot HVACR systems

🔧 Utilities

(3)

Free
KoolCode
KoolCode

by Danfoss A/S

🔧 Utilities

(1)

Free
Danfoss Spare Parts
Danfoss Spare Parts

Get spare parts for HVACR

💼 Business

(2)

Free
See developer apps

User experience

🐞

Reported Bugs

27 issues

CRASHED instantly on Mac Mini M4

Bug

App won’t open on iPhone

Bug

App flashes up and disappears

Bug

Cannot open app

Bug

Immediately shuts off since recent release

Bug

Crash au lancement since update

Bug

Will not save to Home Screen

Bug

Incorrect PT Charting for r134a

Bug

Information doesn’t slide down

Bug

Crashes on iOS12.1.4

Bug

App won’t open since previous update

Bug

List of refrigerants shifted upwards on iPhone 10

Bug

Stuck on R134a, needs update for current iOS

Bug

R744A only goes to 60 psi

Bug

Scale did not go low enough for deep vacuum

Bug

Missing R22 on Apple version

Bug

Missing R717 (Ammonia)

Bug

Missing R-22

Bug

Missing R124a

Bug

No longer lists Ammonia

Bug

Missing Refrigerants since app update

Bug

Missing Ammonia and CO2

Bug

r410a is missing since update

Bug

Removed r22, 410a, and 407c

Bug

Refrigerants missing now

Bug

Removed slider for ammonia

Bug

Scale doesn't go into vacuum

Bug
✨

Requested Features

18 requests

More residential AC information

Feature

Troubleshooter for Residential & Commercial

Feature

Add SP22 refrigerant

Feature

Add R-11 refrigerant

Feature

Add R-123 range down to 40 degrees

Feature

Add R744 and R744A to 0 psia

Feature

Scale to go lower for R-123 vacuum

Feature

Add R410a

Feature

Add R407c

Feature

Add R404A

Feature

Add R22

Feature

Add R124a

Feature

Add Ammonia

Feature

Add CO2

Feature

Add R717 (Ammonia)

Feature

Scale going higher on CO2

Feature

Setting for high altitude

Feature

Scale to go into vacuum

Feature

FAQ

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.