Founded in 1957, MEI is known as the industry pioneer in the distribution of air conditioning and heating components for heavy-duty equipment. We specialize in HVAC products for Class 6, 7 and 8 trucks and forestry, mining and agricultural equipment. With a dedication to top-notch service and high-quality products, MEI has grown to become the largest independent after-marketer of heavy-duty air conditioning and heating components in the United States.