A recent poll on Akiba Souken's Anime Portal website challenged Japanese fans to pick their "#1 Favorite TV Anime by Kyoto Animation", and more than 3000 otaku responded. The top ten results were as follows:

10.) The Melancholy of Haruhi Suzumiya (Season 2). (73 votes.)

09.) Nichijou. (88 votes)

08.) Free! Eternal Summer. (120 votes)

07.) Love, Chunibyo & Other Delusions. (145 votes)

06.) Beyond the Boundary. (146 votes)

05.) Sound! Euphonium. (201 votes)

04.) K-On! (382 votes)

03.) Free! - Iwatobi Swim Club. (440 votes)

02.) Clannad ~ After Story ~. (461 votes)

01.) Hyōka. (680 votes)

The poll ran from March 03 to March 17, 2016, and fans were only allowed to cast a single vote for their favorite show among a pool of 23 anime TV series produced by Kyoto Animation. A total of 3157 votes were cast.

Sources:

Otakomu

Akiba Souken

Paul Chapman is the host of The Greatest Movie EVER! Podcast and GME! Anime Fun Time.