Despite the album reportedly being leaked a month before its release, Harry's House showcased the best first-week sales in Harry Styles' career. The album debuted at number one on the UK Albums Chart with 113,000 album-equivalent units, becoming the fastest-selling album of 2022 in the country. It also debuted at number one on the US Billboard 200 with 521,500 album-equivalent units, including 330,000 album sales, making it the largest opening week of 2022 in the United States. It debuted at number one in various other countries, including Australia, Belgium, Canada, France, Germany, Ireland, Italy, the Netherlands, New Zealand, Spain, Sweden and Switzerland.
Harry's House was met with critical acclaim. It was supported by the singles "As It Was" and "Late Night Talking"; the former debuted atop the UK and US charts, becoming Styles' second solo number-one song in both countries. Besides the chart-topper "As It Was", three other songs were concurrently in the top 10 of the US Billboard Hot 100: "Late Night Talking", "Music for a Sushi Restaurant" and "Matilda", making Styles the first British solo artist to achieve this feat.