Miller BreatheAir 2-Person CO Monitor and Filtration Box

Breathe Easy with Miller's Grade-D Air System

When you are under the hood for hours at a time, the quality of the air you breathe is just as important as the quality of the weld you lay down. The Miller BreatheAir™ Carbon Monoxide Monitor Box is your first line of defense against contaminated air lines and the silent killer, Carbon Monoxide. Designed to hook up to your supplied air respirator system, this box takes standard compressed air and scrubs it through a three-stage filtration system, turning it into safe, Grade-D breathing air. It’s not just a filter; it’s a guardian that watches your back while you work.

Protect Your Crew

Safety is a team sport, and this unit is built to handle the lineup. With a 49 CFM airflow rating, the BreatheAir™ box can support two welders at the same time. This means you and a partner can run off the same panel, reducing clutter on the shop floor while ensuring both of you are protected. The box is tough, built to survive the knocks and drops of a real job site, and compact enough to not get in your way.

No More Guesswork

One of the biggest hassles with air filtration is knowing when to swap the filters. Miller solved this with built-in filter change indicators that tell you exactly when it's time for maintenance. No more guessing, and no more risking your lungs on a clogged filter. Plus, the integrated CO monitor is always on duty. If Carbon Monoxide levels creep up to 10 PPM, the box lights up and sounds an alarm, giving you the warning you need to get to safety immediately. Calibration is a breeze, taking less than two minutes, so you can get set up and get to work without wasting half the morning.

Miller Reliability

You trust Miller for your arcs, and you can trust them with your air. The 276166 Monitor Box is backed by a 1-year warranty and built with the same True Blue quality you expect. whether you are in a fab shop, a shipyard, or a manufacturing plant, clean air keeps you sharp, healthy, and productive. Don't compromise on your lungs—upgrade your SAR setup with the BreatheAir™ system.