 Your Aspen Fire Department reminds you to check expiration dates on your smoke and carbon monoxide detectors. Regular maintenance prevents false alarms. Replace the batteries annually and test them once a month. Also, did you know that most house fires start in the kitchen? Never leave cooking unattended, and please keep a fire extinguisher in your home. Learn more at aspenfire.com. Your Aspen Fire Department, protecting and serving Aspen for over 135 years.