Amana offers some of the best warranties in the industry, including a lifetime replacement warranty for compressors. Their units feature high SEER ratings, making them very energy efficient. Amana uses Copeland High-Efficiency Scroll Compressors, known for their efficiency and reliability. While some units may lack insulation and protective grills, the comprehensive warranties provide peace of mind for potential replacements.
Carrier offers a wide range of models suitable for various needs, with top SEER ratings up to 21. They are known for their quiet operation and reliability. Carrier units come with a 10-year parts limited warranty and a five-year parts and compressor warranty. Although they are on the pricier side, the quality and efficiency of Carrier units make them a popular choice among homeowners.