Concept2 PM5 vs PM4 vs PM3: Which Monitor & Should You Upgrade?

Concept2 has used three Performance Monitors across the modern era - the PM3, PM4, and PM5 - and if you're buying used or wondering whether to upgrade, the differences matter. The good news first: the workout data is comparable across all three, so your splits and metres mean the same thing whichever you have.^[1] What changes is connectivity and convenience.

The differences at a glance

What each monitor gives you

The PM3 covers the fundamentals - all the core metrics and a LogCard for storing workouts - but has only a wired analog heart-rate option and no app connectivity. The PM4 added ANT+ wireless (digital heart-rate straps and some app compatibility) while keeping the LogCard. The PM5 is the current standard: a backlit screen, both Bluetooth and ANT+, USB storage, and full compatibility with phone and tablet apps.^[1] That Bluetooth is the key practical difference - it's what lets the PM5 pair directly with the apps covered in our Concept2 apps guide.

Should you upgrade?

If your older monitor still works and you don't care about app connectivity, there's no need - the data is identical and comparable, so you're not "behind." Upgrade to a PM5 if you want app integration (ErgData over Bluetooth, scenic and gamified apps), a backlit screen for low light, or you're on a PM2/PM3 that's failing. Both the PM3 and PM4 are retired, so if an old monitor breaks, the PM5 is the upgrade path - and it's the priciest single part on the machine, which is worth factoring in when buying used.

The bottom line

For a new buyer this is moot - every current Concept2 ships with the PM5. For a used buyer, a PM5 is the ideal find, but a healthy PM3 or PM4 is perfectly good if the price reflects it and you don't need wireless apps. Whatever the monitor, you're getting the data standard the whole sport is measured against - the reason the Concept2 is our top-rated rower.