Maryland Residents are required to replace the 9-volt battery operated smoke detectors that are 10 years old with new smoke detectors.
Maryland's Smoke Alarm Law applies to both hardwired and battery operated smoke alarms. The date will be on the back of the smoke detector. If you don't see a date then the smoke detector is probably over ten years old.
The new law emphasizes the use of sealed smoke alarms with long-life batteries and silence buttons. Below is an outline of requirements.
- In existing homes, the National Fire Protection Association (NFPA) requires a smoke alarm outside of bedrooms and one on each level of the home. However, it also recommends that existing homes be equipped with at least the same number of smoke alarms required in new homes which includes smoke alarms present inside all sleeping rooms.
- For new construction, Maryland’s Smoke Alarm Law has been updated to match with the International Residential Code and National Fire Alarm and Signaling Code. An AC powered, battery back-up smoke alarm is required in every bedroom, in the common area outside of the bedrooms and on every other level of the dwelling unit, with all of the required smoke alarms being interconnected. The requirements for smoke alarms vary depending on when the residence was constructed.
This new law is meant to protect people from house fires. Since the battery operated smoke detectors are easy to dismantle, many homeowners would take batteries out if they were triggered by cooking. The homeowners would then forget or neglect to replace the batteries. This has resulted in house fires where firefighters find no batteries in the smoke detectors. The new smoke detectors have a hush feature that allows you to temporarily turn off the smoke detector while cooking.
For more information about Maryland's Smoke Alarm Law, read this article from the Baltimore Sun