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Fieldpiece - HVACR Wireless Vacuum Gauge - MG44 - Quick, Accurate Evacuations & Vacuum Readings - Job Link Compatible Long Range HVAC Tool

  • Based on 419 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Jan 5
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Features

  • Achieve highly accurate micron readings by connecting the MG44 directly to the system port; the innovative reversible angled coupler ensures a secure fit and reliable seal even in tight or awkward spaces
  • With 3 ways to use, Stand Alone, Job Link System App & SMAN Manifold Screen, this micron wireless vacuum gauge is built to make your work easier
  • Confidently pull and verify deep vacuums with precision measurements from 50 to 2000 microns displayed clearly on the backlit LCD and view by rate, bar graph or rate meter to ensure accuracy
  • Long battery life (40 hours typical alkaline), wireless range of 1000 feet (305 meters) line of sight and radio frequency of 2.4 GHz

Description

Fieldpiece MG44Reliable, leak-proof sealReversible angled coupler and new cylindrical design are easier to fit into tight spacesView from up to 1000 ft away via the Job Link mobile app, on the Fieldpiece SMAN Refrigerant Manifold, or direct from the MG44's displayThe new larger backlit LCD screen is easier to read and its dot-matrix display shows more info including a bar graph, rate, and rate meterIP54-rated weather-resistantWireless Vacuum GaugeDesigned for the fieldLike every piece of Fieldpiece hardware, the Wireless Vacuum Gauge (MG44) is built to make your work easier. It helps eliminate misleading measurements by allowing you to connect it at the system port - even those awkward, hard-to-reach spots. It's also housed in a rugged impact - and weather-resistant case.Install anywhere - even one-handedThe new, smaller cylindrical shape of the Wireless Vacuum Gauge, its no-slip grip, and the addition of a reversible angled coupler - mean the MG44 is easy to manipulate and install in the toughest spots.Three ways to useWhile you're performing an evacuation, this gauge allows you to monitor progress via the Job Link app from up to 1000' away. The MG44 also works with existing SMAN Refrigerant Manifolds (SM380V/SM480V) or you can monitor evacuation measurements directly on the MG44 display.Three ways to viewA dot-matrix display means you get multiple views - bar graph, rate, and rate meter; and our new larger backlit LCD screen is bright and easy to read, even in low light or at odd angles.

Brand: Fieldpiece


Material: Plastic


Item dimensions L x W x H: 10 x 5 x 5 inches


Thread Type: 1/4 Sae Male


UPC:


Product Dimensions ‏ : ‎ 10 x 5 x 5 inches; 13.44 ounces


Item model number ‏ : ‎ MG44


Batteries ‏ : ‎ 2 AA batteries required.


Date First Available ‏ : ‎ July 14, 2021


Manufacturer ‏ : ‎ FIELDPIECE INSTRUMENTS,INC


Best Sellers Rank: #21,558 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #1 in Vacuum Gauges


#1 in Vacuum Gauges:


Customer Reviews: 4.6 4.6 out of 5 stars (424)


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jan 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Great way to measure hvac vacuum
This tool is awesome. It reads microns great, the bluetooth to the phone enables you to do other things and still watch progress. Highly recommended this product!!!
Reviewed in the United States on November 21, 2025 by Harley UltraRider-NC

  • One of the best vacuum gauges on the market.
It's a field piece what more should I say. Great product, no leaks, looks good, holds vacuum well, water proof. As a Journeyman HVAC mechanic/ installer, this tool is a must have for the work truck/ tool bag. Great company, i use a lot of their products because they hold up to this work environment. I highly recommend this product and every product that they make. ... show more
Reviewed in the United States on July 26, 2025 by Brian B

  • Superb instrument!
I have bought and returned many similar devices; they either leaked, or were grossly inaccurate. This one worked straight out of the box. It's wireless capability is just a bonus to me, but is very welcome.
Reviewed in the United States on July 19, 2025 by Vaderbloke

  • Great product
Really accurate
Reviewed in the United States on September 29, 2025 by Waynes A/C & Appliances

  • Top of the line
I own a CPS VG200 vacuum gauge and it seems that the sensor needs to be cleaned with denatured alcohol after every use and I have grown to distrust its reliabilty. So I ordered the Fieldpiece vacuum gauge and I have used it twice thus far to pull a vacuum on 2 recovery cylinders. 1. The field piece appears to be accurate. 2. There is no leak or crazy changes during the evacuation process. 3. The decay test was excellent. 4. The wireless feature is very helpful. You can set the auto turn-off feature for 1 hour or less, or just disable it and keep monitoring the progress of the micrin gauge from indoors. Two AA batteries came with it. 5. The wireless feature DOES NOT work within the 1000 feet range. It may work if there are no walls. It worked for me at about 30 feet distance from my garage to the farthest point inside my house, but stopped picking up the signal when I went to the backyard. 6. By comparison to the CPS micron gauge, I think the Fieldpiece is by far more reliable. I changed the gasket on the CPS vacuum gauge and when it reaches 150 microns the reading starts rising again beyond 500 microns on its own, and even went beyond 1500 microns. I cleaned the CPS VG 200 sensor per manufacturer's instructions and changed the gasket, but it still was irratic. I switched to the Fieldpiece right way and the problem did not reoccur. 7. I do not find it necessary to spend more money on another brand or gauge, just because the other brand has more bells and whistles. Invest in other tools you need. I have used an Appion valve during the process, a Robinair 4 cfm vacuum pump with a a ballaster and an isolation valve, and two 3/8 hoses. The hoses were connected to a Yellow Jacket vacuum manifold. Take the time to play with the menu and insert the batteries with the positive polarity facing up towards the back cover. As I prime member I received the gauge on a Sunday, which I ordered on a Friday evening. The Amazon driver did an excellent job in terms of texting and the safe delivery of the product. These people need to be appreciated for their effort in keeping us customers happy when they deliver our goodies. Reviewed on 07/05/2024 ... show more
Reviewed in the United States on July 5, 2024 by Mondelivres

  • good unit, needs a couple tweaks.
Fieldpiece is a great company for HVAC equipment. Top notch stuff. This vacuum monitor is pretty good, however there are a couple little things that would REALLY help! First, the monitor DOES NOT indicate that there is a vacuum until it gets really low. My CPS monitor shows a vacuum is being drawn right away, darn near atmospheric pressure, and it starts to read around 85000 microns. So you can see right away that it's working. The Fieldpiece unit DOES NOT give this indication and didn't start to show a vacuum reading until about 10,000 microns. The display just sat there blank. I thought it was broken at first, and started all kinds of troubleshooting to figure out why i wasn't getting a reading. Finally I put BOTH of the monitors on the line and the CPS was reading great, but the Fieldpiece was still blank. i was getting ready to return it as broken when it finally started reading. So that is a problem, as it would be nice to know if there is a problem with the vacuum right away, instead of waiting for a long time only to find out it's not working at all. Second, The display time out should NOT turn off if there is activity. If the vacuum is changing, the display should stay on. Perhaps it should stay on constantly under vacuum and only use the auto shutoff at atmospheric pressure. The same could be said that the unit should turn on automatically when a vacuum is formed. ... show more
Reviewed in the United States on December 18, 2025 by Tek

  • Recommend
Vacuum gauge showed up on time and it works great.
Reviewed in the United States on August 6, 2025 by Wink

  • Can't go wrong with Fieldpiece!
Very good micron gauge!
Reviewed in the United States on October 10, 2025 by Kindle Customer

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