Cornerstone Services offers air conditioning, heating, electrical, plumbing, deep cleaning and handyman work in the Salem, Windham, Derry, Londonderry and Hudson, NH areas. Our repair, installation, replacement and change out specialists are here to fix your problems. Our plumbing and pipe repair technicians, as well as our AC repair and installation experts are on standby whenever you need us the most. Our local electricians have been serving the local residents of Salem, NH and the surrounding areas for over 21 years, since 2003 and we are ready to tackle any residential or commercial wiring problem you may face. Our experienced team would love to bring you back to comfort with our heating and cooling services too! Call our team today!