When a vacuum is pulled, there is two ways to measure it with either a manifold gauge and micron gauge.
Manifold gauges are the original equipment used to measure air pressure and see how much of a vacuum was in a system.
Micron gauges are a modern digital way to measure air pressure and much more precise.
Both units will work to measure a vacuum with most technicians these days using micron gauges.
There are many good units available with some of our favorite picks below.
As always be sure to read the reviews on Amazon or elsewhere to be sure a unit is a good fit for you.
*This post contains affiliate links.
Our Picks for the Best Micron Gauge for HVAC
- Appion AV760
- CPS Vacuum Gauge
- NAVAC NMV1
Bluetooth is built in and works with an app that can be installed on a smartphone with many added options such as record.
The Bluetooth range is roughly 20-30 feet but can go farther at times.
There is some comments online about it leaking along with the battery compartment hard to access but I had no issues.
NAVAC NMV1 Micron Vacuum Gauge
NAVAC is a company that makes many types HVAC equipment including the NMV1 micron gauge.
It has buttons for power, unit, set, and save/calibrate.
The unit is not fancy but quick and easy to use and a good basic micron gauge.
Buying any HVAC equipment can be expensive and should be researched to get the best fit for your scenario.
A busy HVAC tech will often have 2-3 different micron gauges, a digital manifold gauge, as well as an old fashion manifold gauge.
A part time tech will only need one good unit and likely a manifold gauge.
If you are a home do-it-yourself type person doing repairs or installs a low-cost budget unit will likely be best.
Do you have a favorite micron gauge unit? Let us know in the comments below.