Maine Heating Oil and Propane Delivery, Service, Repair, Installations M. W. Sewall is a 4th generation family business serving Maine's midcoast communities since 1887. We are locally owned and have been operating a home heating oil and propane delivery company providing full service and installations for your heating and cooling needs. We are a full service energy company that serves our customers' needs 24 hours a day/365 days a year. We offer a variety of petroleum products.
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