M&O Corporation

M&O Corporation operates as a commercial and industrial HVAC contractor based in Bridgeport, Connecticut, with a 3.9-star average drawn from seven client reviews. The company holds itself out as serving Connecticut clients with critical temperature and humidity needs, focusing on design build projects, general contractors, industrial facilities, office spaces, manufacturing plants, and medical environments. Their service model emphasizes dispatch responsiveness and professional conduct from initial customer contact through ongoing maintenance appointments.

The contractor distinguishes itself through certified engineering design capabilities and in-house sheetmetal and piping expertise, allowing for customized installation solutions across varied commercial contexts. Indoor air quality studies and building automation services form part of their technical offering, positioning them as a contractor capable of addressing complex climate control challenges beyond standard residential systems. This combination of engineering documentation and hands-on fabrication sets them apart from simpler service-only operations.

Customer feedback highlights specific technician interactions, with Dave receiving particular mention for thorough installation work including post-service cleanup and customer education on system operation. Avelino Campos mentions a nine-year relationship spanning installation, repair, and quarterly maintenance for industrial client Numet Machinig. However, reviewer Iran Hernandez describes a significantly negative encounter involving a company vehicle and dismissive management interaction, suggesting service consistency varies by situation.