Critical Heating & Cooling, llc offers its customers a reliable, cost-effective, fully-licensed and insured source for all your heating or cooling needs in the Metro Detroit area: Warren, St. Clair Shores, Eastpointe, Fraser, Roseville, Clinton Township, Mt. Clemens, Macomb Township, Chesterfield, Shelby Township, Madison Heights, Hazel Park, Utica, Grosse Pointes. We service most brands and types of systems for residential and light commercial applications. Our full line of products includes heating systems, cooling systems, air purifiers, humidifiers and water heaters.