Comatose was certified gold by the Recording Industry Association of America (RIAA) on November 3, 2009, their first album to do so,[2] and has since gone platinum, selling over 1,000,000 copies as of May 20, 2016.

AllMusic praised its unique mixture of instruments, saying, "When guitar progressions meet piano nuances, special things happen with this band.

"[5] Jesusfreakhideout.com also gave the album a high rating; "Filled with big songs from beginning to end, Comatose relies on more theatrics to build their sound while delivering substance at the same time.

"[1] Christianity Today, while mostly giving the album positive remarks, felt that the ballads were a bit too pop-oriented compared to the heavier songs.

[6] IGN.com gave the album a mixed review, commenting, "This may play well within that niche market of Christian music, as many of the traditional listeners eschew 'secular' radio.