Does an oil furnace need to be cleaned?
user
Not usually.  Most oil furnaces in this country are well-designed and properly maintained and rarely need cleaning.
assistant
Are you sure? I thought they got dirty and needed clean at least once in a while.
user
Well, I think it depends on how old your furnace is and how well it’s been maintained.  Sometimes a little dirt can just naturally accumulate in the cracks and crevices of a furnace.  However, you should ask your local heating contractor to help you check the inside and to make sure that your furnace doesn’t need any repairs.
assistant
Does an oil furnace need to be cleaned?
user
Not usually.  Most oil furnaces in this country are well-designed and properly maintained and rarely need cleaning.
assistant
Are you sure? I thought they got dirty and needed clean at least once in a while.
user
Most oil furnaces are designed so that a flow of oil through them is sufficient to dislodge any dust particles that accumulate.
assistant
Does an oil furnace need to be cleaned?