FREE SMOKE DETECTORS: Smoke detectors SAVE LIVES, but many area homes do not have these units. Some have units that no longer work. If you live within the Murfreesboro city limits, phone Murfreesboro Fire & Rescue Department. They will be happy to install a new, working smoke alarm for FREE! Residents in the city of Murfreesboro should phone 615-893-1422. Residents in Rutherford County can contact the Rutherford County Fire Department at 615-867-4626 to get a free smoke detector installed.