Excelling with experience dating back to the 1970's, while continuously adopting the latest technology. OTC Services is committed to new, remanufacturing and repair of liquid-filled and dry-type transformers for both industrial and utility clients. Located in Northern Ohio with a dedicated rail access, large truck delivery, and a 100-ton overhead crane, we accommodate you with the most efficient service/product in the industry. At OTC Services , our on-site engineers utilize only the highest quality materials for maximum renewal of your transformer life cycle. We aim to reach the highest level of customer satisfaction while sharing as much technical knowledge as possible.