23 years of experience in reliable HVAC installation, repair, and maintenance across Worcester, MA, and the Surrounding Areas Founded in 2020, O’Hara Heating and Cooling was built on a simple mission: to provide dependable HVAC solutions and honest service to Worcester, MA, and the surrounding areas. With 23 years of experience, we bring big-company expertise with a personal touch. As the owner, Michael O’Hara personally handles each job to ensure the highest quality of work and a level of care that truly sets our service apart.