About Syneco Systems Syneco Systems, Inc was founded in 1983 and is the manufacturer of odor control equipment including dry air scrubbers, odor control manhole inserts, vent filters and inflow protector inserts along with biological and chemical products which are used primarily in municipal and industrial wastewater collection systems and treatment plants. Hydrogen sulfide (H2S) is the most common malodor our technologies are designed to address, but more can be present and are controlled as well. We are headquartered in Minnesota and our manufacturing plant is located in central California. We hope you find this information helpful. Please contact us if we can be of further assistance.