Testo 550s Smart Kit - Digital Manifold with 2 Way Valve, 115i Temp Probes (x2), 552i Vacuum Probe, Hose Set (Part Number 0564 5505 01)

The Testo 550s AC Manifold Gauge Set is a reliable and essential tool for HVAC and refrigeration professionals. With its accurate readings, wired temperature probes, and comprehensive features, this gauge set ensures precise monitoring and analysis of AC systems for optimal performance.The standout feature of the Testo 550s AC Manifold Gauge Set is its accuracy. The gauges are engineered to provide precise measurements of pressure, temperature, and superheat/subcooling, allowing technicians to make informed decisions and diagnose issues effectively. The high-quality construction and advanced sensor technology ensure reliable and repeatable readings, ensuring confidence in the results.This gauge set includes two wired temperature probes, which are invaluable for obtaining accurate temperature measurements in various parts of the AC system. The probes can be easily attached to different components such as condenser units, evaporators, or refrigerant lines, providing valuable insights into the system's operation. With this information, technicians can assess system performance, identify potential issues, and optimize the overall efficiency of the AC or refrigeration system.The Testo 550s AC Manifold Gauge Set is designed with convenience and usability in mind. The gauges feature a user-friendly interface with a large backlit display for easy reading even in low-light conditions. The intuitive menu navigation allows technicians to quickly access the desired functions and make adjustments effortlessly. The rugged build and ergonomic design ensure durability and comfort during extended use.Additionally, this gauge set offers comprehensive features that cater to the specific needs of HVAC and refrigeration professionals. It supports multiple refrigerant types, including R-410A, R-22, R-404A, and more, ensuring versatility for a wide range of applications. The set also features automatic calculations of superheat and subcooling, enabling efficient troubleshooting and system optimization.Testo is known for its commitment to quality and innovation. The Testo 550s AC Manifold Gauge Set upholds this reputation by meeting the highest industry standards. It undergoes rigorous testing and calibration to deliver accurate and reliable performance, making it a trusted tool for professional technicians.In conclusion, the Testo 550s AC Manifold Gauge Set is an indispensable tool for HVAC and refrigeration professionals. With its accurate readings, wired temperature probes, and comprehensive features, this gauge set enables precise monitoring and analysis of AC systems. Enhance your diagnostic capabilities, optimize system performance, and deliver exceptional service with the reliable and efficient Testo 550s AC Manifold Gauge Set.

I did a lot of research when looking into a gauge / manifold for working on HVAC systems. What was important to me was accuracy and simplicity and I'm glad I spent a little extra on this digital manifold vs some of the cheaper analog systems.The biggest benefit of using a system like this is that you can select what you want on the screen, work with different refrigerant types, and it automatically calculates values (like superheat and subcool) automatically if you have the proper gauges hooked up.The wireless sensors (temperature clamps) work in conjunction with the hoses reading temperature / pressure of the high and low side ports. This is what allows you to know the subcool and superheat.There are also places in the case (which is a hard shell case) for other wireless sensors, so I am storing the digital probes and vacuum probe. I ultimately purchased the wireless digital probes alongside this unit because I wanted the flexibility to use a more traditional gauge, or if I wanted a quick reading, just use the digital probes. These are great because they hook up directly to the High / Low ports, and you don't need to use hoses so when testing on an existing system, you are losing next to no refrigerant.The App works as a sort of 'second screen' to the main manifold. You can track and graph readings over time, so you can see a graph of temperature / pressure change as you are working on the system, or when filling.One note, some other reviews mentioned that it eats through batteries - I've not experienced any issues and still using the same batteries from 3+ months ago.Overall, this has been one of the most vital pieces to building a toolkit to work on HVAC systems and at a much more competitive price when compared to other digital manifolds.

Bought to test and recharge a newer Mini split but haven't gotten to use for that yet. Used for older conventional R22 unit so far. Simple set up and nice hardshell case. Easy to read display. Decent price for what you get. Used Yellow Jacket hoses and fittings with it.

Couldn't be happier. Used it on my own air conditioner/heat pump, And you can just tell it's high quality. Can't wait to use this in the field.

Working good

My only complaint is that the suction smart probe doesn’t want to connect. I know there’s videos and posts online about other people having the same problem so it would be nice if they fixed that issue. Even with that issue, I’d still give 5 stars. Other than that, these are top notch! Absolutely comparable to, or in my opinion better than, the field piece gauges that are more expensive. I have the app on my phone so I can move around and do what I need to do while checking pressures thru Bluetooth with a click. If you charge using superheat, I HIGHLY recommend this set up plus the thermohygrometer from testo as well. Also Bluetooth, so you can see your wet bulb reading on the indoor from outside, saves me tons of time going in and out, up and down stairs. These gauges will do all of the calculations for you and makes the job so much easier. The Vacuum sensor not working doesn’t bother me one bit honestly, but it may be an issue for someone else so make sure you register your warranty and contact them, I haven’t yet, but I’ve heard they’re easy to deal with.

I was angry at first because manual is in Chinese, but after using that manifold once, I understood that it's really awesome! Thank you

I’m being honest using this for about 2 years already and it is just great!