Free shipping over $99. | Need help? Call or text (786) 239-7444.

Hvac And Tools Direct Logo Svg
BWP PrimeBlue Preferred
Bbb Logo 3 Svg

Free shipping over $100

Hvac And Tools Direct Logo Svg

Fieldpiece MG44 Wireless Vacuum Gauge


Available on backorder

FREE delivery over $99

Easy 30 day return (Domestic)

Easy International shipping

Need Help? Speak with our HVAC and tools experts. Call or text (786) 239-7444.


The Fieldpiece MG44 Wireless Vacuum Gauge 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 severe impact- and weather-resistant case. Moreover, the new, smaller cylindrical shape of the Wireless Vacuum Gauge is a no-slip grip, and the addition of a reversible angled coupler—means the MG44 is easy to manipulate and install in the most challenging spots.

Also, while performing an evacuation, this gauge allows you to monitor progress via the Job Link® app from up to 1000’ away.  Furthermore, the Fieldpiece MG44 also works with existing SMAN® Refrigerant Manifolds  (SM380V/SM480V), or you can monitor evacuation measurements directly on the MG44 display. A dot-matrix show 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.

It can be used in three different ways:

Stand Alone – The new cylindrical design with a reversible coupler fits into tight spaces while still being easy to read. With the large, backlit LCD screen, you can see the information from wide angles and high and low lights. The rugged, sealed case is weather resistant and stands up to harsh conditions.

Job Link System App – This rugged vacuum gauge communicates wirelessly with your mobile device to keep you up-to-date on progress from 1000′ away so you can move on to another task or out of the way of the customer’s business or home.

SMAN Manifold Screen – Monitor vacuum progress using a separate vacuum gauge at the system port during any standard evacuation for better accuracy, even with the SMAN digital manifold.

  • Fieldpiece MG44 Wireless Vacuum Gauge
  • Reliable evacuations with a leak-proof seal
  • Easier to fit into tight spaces
  • IP54-rated weather-resistant
  • Extreme impact resistance
  • Confidently monitor vacuum with a reliable, leak-proof seal
  • Reversible angled coupler and new cylindrical design are easier to fit into tight spaces.
  • Rugged over-molded construction for extreme impact resistance
  • Three ways to use
  • up to 1000' away via the Job Link mobile app
  • on the Fieldpiece SMAN Refrigerant Manifold
  • direct from the MG44's display
  • Three ways to view via the new larger backlit LCD screen, easier to read and the dot-matrix display shows more info including
  • bar graph - graphical illustration of the measurement. uses a non-linear scale for better resolution at deeper vacuum (Full bars are atmospheric pressure.)
  • rate - the running 10 sec average of the measurement change per minute. (Negative rate indicates deeper vacuum.)
  • rate meter - graphical illustration of the measurement's real-time change (The scale is dynamic, that is not the actual value)
Fieldpiece MG44 Wireless Vacuum Gauge
Min. Device Requirement : BLE 4.0 devices running iOS® 7.0 or Android™ 5.0
Connector type : 1/4'' SAE male fitting. Includes reversible 1/4" angled (45°) coupler with Schrader depressors
Max Pressure : 870 psig (60 bar)
Refresh Rate : 0.5 seconds
Accuracy : ±(5% of reading + 5 microns) at 77°F (25°C), 50 to 1000 microns
Measurement Range and Units : 50 to 25000 microns of mercury (English), 6 to 3333 Pascals (Metric), 0.06 to 33.33 mBar (Metric), 50 to 25000 mTorr (Metric), 0.05 to 25 Torr (Metric, equivalent to mmHg)
Bar Graph Range: : ultimate vacuum to atmospheric pressure
Best Resolution : 1 micron of mercury (below 2000 microns), 1 Pascal (below 250 Pascals), 0.001 mBar (below 2.5 mBar), 1 mTorr (below 2000 mTorr), 0.001 Torr (below 2.5 Torr, equivalent to mmHg)
Battery Type : 2 x AA Alkaline, NEDA 15A, JIS UM3, IEC LR6
Battery Life : 40 hours typical alkaline
Auto Power Off : 15 minutes default (APO adjustable)
Wireless Range : 1000 feet (305 meters) line of sight. Obstructions affect distance.
Radio Frequency : 2.4 GHz
Wireless Device Requirements :
  • Job Link® app: BLE 4.0 devices with iOS® 7.0 or Android™ 5.0
  • SMANTM manifold: Models SM380V/SM480V with latest firmware installed
Water Resistance : IP54
Operating Environment : 14°F to 122°F (-10°C to 50°C) at <75% RH
Storage Temperature : -4°F to 140°F (-20°C to 60°C) at <80% RH (with batteries removed)
Weight : 0.66 lbs (300 g)
Maximum Pressure : 870 PSI
How do I check if Fieldpiece MG44 is leaking?

Connect the Fieldpiece MG44 to an empty recovery tank and pull down to 500 microns and isolate the pump from recovery tank and microns should rise slowly not immediately /fast rise.

  • (1) Fieldpiece MG44 wireless vacuum gauge

Customer Reviews

Based on 1 review
Works great

The product is great and makes measuring vacuum easier faster and better.

Fieldpiece MR44 wireless vacuum gauge
Fieldpiece MG44 Wireless Vacuum Gauge