Thanks for the help! Looked into this some and after I got home last night I found a video on how to diagnose this by checking the inlet and outlet temps. I let the car sit for about 5 minutes while I got the temp gun and watched the video, started the car and ran the heat full go for a little bit. The inlet was ~175° and the outlet was ~150-155°.

From my understanding the difference is not too large, but the temps might both be low? Curious what you thought.