Coan Oil began in 1946 with a small gasoline service station started by its founder, Francis Coan. The company offers automatic delivery service, complete oil burner and furnace service, central air conditioning services as well as service contracts, 30-day billing and budget plans and 24-hour service and products. The company also has an oil storage bulk plant. It products maintain clean air, fresh air, proper humidity levels, temperature control and distribution of conditioned air through automatic humidifiers and air cleaners. Coan Oil utilizes HEPA-type filtering media that improves its particulate-capturing capability the longer it is used. For particles larger than five microns, efficiency reaches 99 percent. Even the smallest particles, as small as one micron, can be filtered out at 95 percent effectiveness. Coan Oil is headquartered in Natick, Mass.