M&O

M&O has been serving commercial clients in Connecticut and the adjacent New York area since 1976, delivering top-tier HVAC maintenance, repairs, and installations. Our team of approximately 45 professionals is dedicated to upholding core values of honesty, integrity, and respect for both employees and customers. Our mission remains unchanged since our founding: to provide a safe work environment where employees are treated as family and these values extend to our customers through collaborative construction and service projects. We prioritize quality, efficiency, and long-term partnerships, ensuring our clients receive the highest value and return on investment. Our expertise spans diverse sectors, including medical facilities, data centers, manufacturing plants, and educational institutions.

We specialize in tailored preventative maintenance plans, HVAC engineering and design with over 40 years of experience, and advanced building automation systems for energy management. Our services include heat load calculations, sheetmetal and piping, equipment replacement, and mechanical insulation, all designed to meet specific budgetary and operational needs. We guarantee year-round smooth operation of HVAC equipment through customized service agreements. Our commitment to excellence, rather than size, drives our approach to every project, ensuring client satisfaction and enduring relationships.