On AllMusic, Thom Owens said, "Though the set focuses on blues material, Winters [sic] can never leave his rock roots behind — the sheer volume and pile-driving energy of his performances ensures that."[3]
In the Chicago Tribune, Dan Kening wrote, "The original "White Tornado" returns with a strong outing that both reinforces his reputation as a world-class blues guitarist and indicates a growing maturity.... Winter shows he has at long last learned to balance technical flash with emotional substance."[4]
In the Chicago Reader, David Whiteis wrote, "Johnny Winter's Let Me In is a new contribution from a bluesman well on his way to elder-statesman status.... At this point Winter's guitar is beyond criticism — he's toned down his excesses, but he's still got that machine-gun multinote style, playing straight-ahead blues in manic linear patterns — he doesn't build a solo so much as blast straight through it."[5]