Purchasing Waste Oil - If you do not generate a sufficient supply of your own waste oil, there are waste oil suppliers in most states. Waste oil recyclers pick up waste oil products from area businesses, filter it and then make it available for resale.
In addition, you have the option of purchasing oil directly from the waste oil producer. These businesses typically pay third party contractors to haul off and dispose of their waste oil. By providing it to you for use in your waste oil boiler system, they save the disposal cost and you have significant savings on your heating fuel.