Users find what they're looking for faster because only relevant filtering choices are shown. This leads to happier customers and increased sales.
Facets use your site's existing custom fields, taxonomies, and post data (author, post date, post type, etc).
FacetWP is ajax-based, so filtering happens quickly and without page refreshes. The plugin also uses an index table for extra speed.
Add facets anywhere on your page using shortcodes or PHP. Other built-in features (pagination, sorting, user selections) are also just a shortcode away.
FacetWP comes with 12 facet types, including checkboxes, dropdowns, date ranges, sliders, and even proximity (geolocation).
Developers can take advantage of the plugin's many hooks for a high degree of customization.