Guardian Plumbing & Heating

Guardian Plumbing & Heating, located in Livonia, Michigan, has been a trusted full-service plumbing contractor serving healthcare, commercial, and institutional clients since 1968. Founded by Andy D'Ascenzo with a commitment to quality and fair pricing, the company has grown into a second-generation family business with over 40 years of combined expertise. Our licensed professionals specialize in installing and maintaining plumbing systems for healthcare facilities, high-rise buildings, schools, and industrial plants, delivering exceptional craftsmanship and service. We serve major hospital systems across southeastern Michigan, including Beaumont Hospital, Henry Ford Health Systems, and the University of Michigan, while maintaining long-standing relationships with clients like General Motors and single-building owners. Our comprehensive safety program exceeds federal and state standards, featuring OSHA-certified training, confined-space protocols, and regular job-site inspections.

As a union-affiliated contractor, we combine technical excellence with a dedication to employee safety and customer satisfaction. Our emergency services operate 24/7, ensuring immediate response to critical plumbing needs. With three master plumber brothers leading the company, we continue to uphold our founding principles of quality, reliability, and integrity. Our affiliations with industry organizations like the Plumbing Contractors of America and the Mechanical Contractors Association demonstrate our commitment to professional excellence. From complex medical gas piping installations to routine maintenance, we deliver cost-effective solutions tailored to each client's unique requirements.