Positive Reviews for Diamond AC & Heating: Customers appreciate Diamond AC & Heating for their high-quality cooling and heating services in the Phoenix metro region. The company's certified HVAC experts are fully qualified in all major brands, ensuring knowledgeable and experienced service. Many customers praise the company's quick response time and prompt repairs for AC issues. Diamond AC & Heating is also known for their professionalism and friendly customer service, creating a pleasant experience for homeowners. With their willingness to work with customers on payment plans and their commitment to customer satisfaction even after the sale, Diamond AC & Heating stands out as a reliable and trustworthy HVAC contractor.