"Thunder in My Heart" received generally positive reviews from music critics, who praised the production.

A dance remix of the song by British disc jockey Meck titled "Thunder in My Heart Again" was released on 6 February 2006, and topped the UK Singles Chart.

[3] Writing for the Red Deer Advocate, J. Norman Bower stated that "Thunder in My Heart" is a "classic Sayer melody" followed with instrumentals,[4] while Warren Gerds of the Green Bay Press-Gazette opined that the song has a "big sound" due to the production.

[8] "Thunder in My Heart" bowed at number 22 on the UK Singles Chart dated 2 October 1977, where it remained for eight weeks.

[18] In 2005, Meck asked Sayer for permission to remix the song,[19] after the former found it as a 12-inch single inside a Los Angeles discount store and envisioned a "dance mix treatment".

[27] It was eventually certified silver by the British Phonographic Industry (BPI) on 22 July 2013, for selling 200,000 equivalent units.