Engineer: Sweet Heart Sweet Light has received critical acclaim. From a collected 38 reviews, the review website Metacritic gives the album a score of 81 out of 100, indicating "Universal Acclaim." Pitchfork's Ryan Dombal gave the album a "Best New Album" designation, calling it Pierce's most uplifting album of his career. In another positive review, BBC Music's Chris Lo wrote "For every diehard fan there's someone else wondering what all the fuss is about. Sweet Heart Sweet Light, Spiritualized's seventh studio album, isn’t going to change any of that." Lo concluded: "...it's a Spiritualized album, and a great one." Rob Hakimian also praised the album, writing "All ten of the songs here are grandiose and muscular in the great tradition of Spiritualized songs, doing away entirely with the fragility that cropped up on songs like "Death Take Your Fiddle" from their last album.