Digital Manifold Gauges HVAC for 92 Refrigerant Digital Gauges HVAC pressure&Temp Test Air Conditioning Tools & Equipment Supercooling/Superheating Test,for Cold Storages/Refrigerators AC Recharge Kit

Similar to Testo 549. Good value for the money. Works great so far. Only negative is that the instruction manual isn’t very good, but HVAC techs using this equipment shouldn’t need a manual anyway. Good build quality. So nice to have superheat and sub cool calculated and displayed! Carry case and hoses were o.k. in quality too and hoses didn’t leak.

Súper bien, lo utilice y cumplió con mis espectativas. Es básico pero muy funcional. Los tiempos de entregan los deben mejorar

You can accomplish the same using a standard manifold and a separate 2 channel thermometer, but you'll have to do the math for subcooling and superheating. Also, it can do pressure leak testing. I used it for the former, not the latter, and it works well.

Yellow Vacuum/intake line has a leak at the joint. I emailed the company for a solution. No reply. I emailed them again and 3 days later I got a response back to contact Amazon for a replacement. I contacted Amazon and got a response back saying its past the 30 day return policy and that I need to contact the seller. Round and round we go. If you are going to sell some garbage, atleast do some quality controls and test it before it goes out the door.

Makes my job must easier and proficient when working on hvac systems. The only thing I didn’t noticed when purchasing, there’s no holders for clamps.

This HVAC guage is not only a digital pressure gauge it also can measure temperature in two different locations. What I believe is the best feature is that if you are also measuring temperature the guage calculates Superheat and Subcooling real time. It does this automatically without having to fumble with charts, tables, a calculator or even use a separate divice to measure temperature. It allowed me to accurately add refrigerant to a refrigerator, that had lost charge through a slight leak over the years, using the preferred superheat method. To be fair I did not check the pressure accuracy of the guage. However, it is accurate enough for me and the above refrigerator is as cold as it was when new. Even the instruction booklet is clear. To get these features in a "Professional" digital guage would easily cost 3 times the price. I am totally happy with this purchase.

Temperature clamps are cheap and break fairly easily, but the manifold itself is pretty decent and is accurate. Unfortunately, my manifold started to read negative or zero for my liquid gauge pressures after a few weeks of use, so now I just use the hoses to charge a system rather than rely on it to measure refrigerant pressures.

Funciona perfecto y muy fácil de usar vale la pena tenerlo