Mercer Landmark Energy is the most trusted residential and commercial propane provider in Northwest and Central Ohio and West-Central Indiana. Homeowners and businesses alike love our competitive fuel prices, complimentary "Keep Full" automatic delivery service and 24-hour response for emergency propane-related needs. We're a locally owned and operated cooperative with 90+ years of experience, but we're still able to leverage the latest technology to safeguard your comfort and well-being all year round. Need diesel, gasoline or lubricants for your business, fleet or farm? Our team can take care of that for you, as well!