Vapor Recovery Services segmentation by type comprises two principal categories: on‑site vapor recovery and off‑site vapor recovery. On‑site systems are installed directly at the point of emission—typically at fuel dispensing equipment, loading racks, or refinery process units—and capture vapors before they escape to the atmosphere. This proximity enables higher recovery efficiencies, often exceeding 95 %, and positions on‑site solutions as the dominant revenue driver, accounting for roughly 60 % of total market volume. Off‑site vapor recovery, by contrast, involves mobile or fixed units that collect vapors from storage tanks, pipelines, or transport containers at a separate location. While offering flexibility for retrofits and lower capital outlay, off‑site configurations generally achieve lower capture rates (70‑85 %) and serve niche applications such as remote terminals or temporary construction sites. The divergent cost structures, regulatory triggers, and operational constraints of these two types shape investment cycles and dictate the overall size of the Vapor Recovery Services market.