Propane delivery man Jack Vanniman has been in the business for 15 years and has seen how propane has become a popular fuel choice in Central Lake, Mich., over the years. Vanniman works for Ellsworth Farmers Exchange, which began delivering propane to residential and commercial customers in the area in 1987. Many customers prefer propane to fuel oil because "it's cleaner burning than fuel oil and propane boilers and furnaces require a lot less maintenance," Vanniman said.

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