Are you looking for AC installation in Hanover, MA? At Efficiency Plumbing, we specialize in installing high-quality air conditioners for local residents. If you have an AC unit that is struggling to operate or just getting along in age, an AC replacement may be a great investment. New units are more efficient and more effective, so you can look forward to lower energy bills and a more comfortable home. They also come with modern features that give you more control over your system and home comfort.