Dor-Mar Heating & Air Conditioning

Since 1974, we have been providing both our commercial and residential customers with the very best heating and cooling installation, maintenance and repair service. We also repair, replace, maintain

Located in Columbus, Ohio, Engineering Excellence Inc. is an heating, ventilating and air conditioning (HVAC) facilities management company, delivering HVAC maintenance, service, unit retrofits and equipment audits in the United States and Canada as well as self performed coverage in Ohio, Ky., Ind., Ill., Mich. and Wis. Founded in 1979, the company is a multifaceted organization composed of engineers, mechanical service and installation professionals and information technology managers to bring solutions to retail facility managers. The company provides HVAC facilities management, Nationwide Retrofit and Strategic Replacement Programs, mechanical service validation, national and regional HVAC maintenance service, national facility commissioning and start up services and regional construction management.