Verify smoke and CO alarms per NH fire code. New Hampshire requires every rental unit to have smoke alarms and, where the unit has an attached garage or any appliance or device that burns fuel, carbon monoxide alarms, and makes the owner responsible for keeping them in working order, so a yearly test of every alarm (replacing any smoke alarm older than 10 years, as the US Fire Administration advises) keeps each unit compliant and its occupants protected.
The New Hampshire rule
Each rule shows its schedule, its primary sources, and the date it was last verified.
Related rules in New Hampshire
The New Hampshire guide lists every compliance obligation, the seasonal maintenance calendar, and baseline upkeep.
Open the New Hampshire landlord guide · Smoke and carbon monoxide detector duties in every state
What Landautomate does with this page
This guide is the reading version of the Landautomate New Hampshire rule base. In the app, the same rules become dated tasks on each New Hampshire property, timed to its purchase date, lease dates, age, and climate, with an email before each one is due. The free preview shows a sample of that schedule for New Hampshire in under a minute, no account needed.
See this calendar built for your own property
The free preview takes a state and a few property facts and shows the schedule Landautomate would run, no account needed. Every new account starts with a 30-day free Pro trial, no card required.