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Terry
August 28, 2025
good price!
Peter Gambino
August 21, 2025
I bought this unit to complete the installation of a mini-split. Right off the bat I thought there was something wrong when the included T adapter was threaded differently then the unit! However I kept going on. I plugged the unit directly into my manifold instead and thought all was well. First time I was able to vacuum down to about 750 CFM, but not get lower. It kept climbing... So naturally thinking there was a leak, I inspected every connection, checked the torque on each and tried again... This time I could not get down past 2500? Also when I closed off the manifold the micros started to climb. So I repeated the process and got even worse results? The minimum I could get to was around 9000!! Thinking something was wrong, I connected the line to the high side of the manifold and to ensure it was closed off and repeated the test. Similar results, the lowest I could get was around 7000 and worse when I shut off the low side valve, the results still climbed up! The unit itself cannot keep a vacuum. It is junk.
Colt454t
August 19, 2025
Last me a month very disappointed
Charles xiong
August 15, 2025
great products
Customer
August 10, 2025
works good for what i needed
Customer
August 2, 2025
When completely isolated and connected directly to deep vacuum the unit seems to leak. When pump is on, rated at 1 micron ultimate vacuum, the beat it pulls is 15 microns and fluctuates to 20 microns. When the gauge is shut off from the pump and isolated, the readings slowly increase 5 microns at a time although the led light remains green so does not indicate a leak. Since the leak is slow this may be normal for it to stay green but clearly the unit cannot be used in my system which is intended for sub 10 micron work. It leaks vacuum and is therefor nearly useless even if the leak is slow.
Paul Anderson
July 30, 2025
Quality product, simple to use
JohnK
July 28, 2025
Bought this to vacuum test a new mini split. Was able to pull down to about 450 mic. No matter how long I left the pump running, would not go past that. Then as soon as I shut the valve and turned off the pump, it immediately started climbing. So I assumed I had a leak so did another nitrogen pressure test and rechecked all my joints etc and found nothing. So took a look at the reviews for this gauge and found many people complaining about an internal leak or some such. So finally decided to bite the bullet and get a CPS gauge to try to isolate the gauge as the issue. The CPS gauge and the same overall setup was able to quickly pull down to 200mic and during the 10 minute decay test it rose to 240. Immediately was able to release the coolant and all is well.Problem is, it had been over 30 days after purchase before I used this and have no return privilege. So essentially this POS delayed my project by a week while I figured out the issue and now I’m stuck with $160 paperweight that did not work even once. Please avoid this product and just buy something that works. The CPS gauge for same money works perfectly.
MACHINERIEJNG
June 28, 2025
DO NOT BUY. It leaks and gives improper reading.It add 100 microns just by turning ON the light. USELESS
Saikumar
June 22, 2025
Lots of hope in this company but disappointed while using digital gauge ,
mazen el turk
June 13, 2025
Extremely disappointed with this product. It never worked from day one. It just kept showing error (77777) the whole time. Not once did it register a reading. Very unhappy and it was a complete waste of money. Very disappointed!!!
John W.
May 22, 2025
Handy little gauge. Comes with 2 fittings so it will fit many different applications. Had to use teflon tape to get a proper seal when hooking it to my hvac gauges. Overall very pleased.
Buyerjames
May 14, 2025
The one that works is pretty good but the other one doesn't give a proper reading. I tried changing batteries and resetting it but no luck.
Terry
May 13, 2025
good price!
Peter Gambino
May 3, 2025
I bought this unit to complete the installation of a mini-split. Right off the bat I thought there was something wrong when the included T adapter was threaded differently then the unit! However I kept going on. I plugged the unit directly into my manifold instead and thought all was well. First time I was able to vacuum down to about 750 CFM, but not get lower. It kept climbing... So naturally thinking there was a leak, I inspected every connection, checked the torque on each and tried again... This time I could not get down past 2500? Also when I closed off the manifold the micros started to climb. So I repeated the process and got even worse results? The minimum I could get to was around 9000!! Thinking something was wrong, I connected the line to the high side of the manifold and to ensure it was closed off and repeated the test. Similar results, the lowest I could get was around 7000 and worse when I shut off the low side valve, the results still climbed up! The unit itself cannot keep a vacuum. It is junk.
Colt454t
April 29, 2025
Last me a month very disappointed
Charles xiong
April 28, 2025
great products
Customer
April 7, 2025
works good for what i needed
Customer
April 4, 2025
When completely isolated and connected directly to deep vacuum the unit seems to leak. When pump is on, rated at 1 micron ultimate vacuum, the beat it pulls is 15 microns and fluctuates to 20 microns. When the gauge is shut off from the pump and isolated, the readings slowly increase 5 microns at a time although the led light remains green so does not indicate a leak. Since the leak is slow this may be normal for it to stay green but clearly the unit cannot be used in my system which is intended for sub 10 micron work. It leaks vacuum and is therefor nearly useless even if the leak is slow.
Paul Anderson
March 31, 2025
Quality product, simple to use
JohnK
March 24, 2025
Bought this to vacuum test a new mini split. Was able to pull down to about 450 mic. No matter how long I left the pump running, would not go past that. Then as soon as I shut the valve and turned off the pump, it immediately started climbing. So I assumed I had a leak so did another nitrogen pressure test and rechecked all my joints etc and found nothing. So took a look at the reviews for this gauge and found many people complaining about an internal leak or some such. So finally decided to bite the bullet and get a CPS gauge to try to isolate the gauge as the issue. The CPS gauge and the same overall setup was able to quickly pull down to 200mic and during the 10 minute decay test it rose to 240. Immediately was able to release the coolant and all is well.Problem is, it had been over 30 days after purchase before I used this and have no return privilege. So essentially this POS delayed my project by a week while I figured out the issue and now I’m stuck with $160 paperweight that did not work even once. Please avoid this product and just buy something that works. The CPS gauge for same money works perfectly.
MACHINERIEJNG
March 16, 2025
DO NOT BUY. It leaks and gives improper reading.It add 100 microns just by turning ON the light. USELESS
Saikumar
February 24, 2025
Lots of hope in this company but disappointed while using digital gauge ,
mazen el turk
February 21, 2025
Extremely disappointed with this product. It never worked from day one. It just kept showing error (77777) the whole time. Not once did it register a reading. Very unhappy and it was a complete waste of money. Very disappointed!!!
John W.
February 4, 2025
Handy little gauge. Comes with 2 fittings so it will fit many different applications. Had to use teflon tape to get a proper seal when hooking it to my hvac gauges. Overall very pleased.
Buyerjames
January 13, 2025
The one that works is pretty good but the other one doesn't give a proper reading. I tried changing batteries and resetting it but no luck.
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