Matt Conner, designating the album four stars at CCM Magazine, states, "Let It Echo is definitely the most polished set of live songs released by Jesus Culture yet...As if you expected anything less from Jesus Culture." Assigning the album five stars from Worship Leader, Amanda Furbeck writes, "the album is easily listenable and singable across cultures and generations, making it attainable for the average or excellent worship band to incorporate into their worship repertoire." Affixing a ten star rating upon the album for Cross Rhythms, Tony Cummings responds, "Some years ago prophecies were made that before the Lord's return there would be revivals of darkness and of light and that contemporary music would be a spearhead for revival. Albums like this one is bringing that day ever closer." Mark Ryan, allocating the album a three and a half star review for New Release Today, describes, "With Let It Echo, Jesus Culture has fully completed its transition from its student ministry roots to providing the next generation of songs for the Church as a whole...They do this with thoughtful, passionate anthems of praise and faith that go beyond hype and emotion." Allotting the album three and a half stars at The Christian Beat, reports, "Let It Echo is a more intimate experience than we’ve had in the past and that works just fine for me." Rebekah Joy, signaling in an 80-percent review for Jesus Wired, says, "Let It Echo is a great album filled with praise and worship for our Lord and Savor." Indicating in a five star review at The Christian Beat, Madeleine Dittmer states, "The songs on Let It Echo are anything but ordinary, with arrangements and lyrics that strike through straight to the soul and leave a lasting impact." Jono Davies, dispensing a four star rating upon the album by Louder Than the Music, recognizes, "If you are looking for a strong worship album with some fantastic outstanding gems, then have a browse at this." Cautioning in a two and a half star review from Jesus Freak Hideout, David Craft says, "While Let it Echo is a decent enough album, not much sets it apart from this year's other worship albums, nor from Jesus Culture's prior efforts. This time, unfortunately, there doesn't seem to be any standout tracks which would profoundly add to their legacy, so this album may not be the best starting point for new listeners."
The album debuted on Billboard 200 at No. 35, No. 2 on the Top Christian Albums chart, selling 13,000 copies in its first week. It has sold 35,000 copies in the United States as of June 2016.
