Coolant Heaters

DKSI is a North American owned and operated manufacturer and supplier of diesel-fired air heaters, engine heaters, and service parts for all makes and models. Our team is dedicated to providing customers with a trusted, affordable source for fuel-fired heaters and parts with quick service for all warranty and service needs. Our popularly priced heaters and heater parts are supported by local Technical Engineers and Sales Teams with over 50 years of combined industry experience.