About Service First MechanicalService First Mechanical is a full-scale plumbing contractors that specialize in both residential, as well as commercial plumbing services. Our experienced team of professionals are able to help with any plumbing related task or project, no matter how small. Service First Mechanical is completely licensed, insured, bonded and offers 24 hour emergency service. Reach out to us today to learn more about our expert plumbing services.