Work out how many smoke, heat and carbon monoxide alarms your home needs and where to put them.
How this works
Fire codes (such as NFPA 72) call for a smoke alarm in every bedroom, outside each sleeping area and on every level including the basement. Use a heat alarm in the kitchen, as smoke alarms there go off with toast. Fit a CO alarm on every level and near bedrooms if you have fuel-burning appliances or an attached garage. Hallways over 9 m need an alarm at each end.
Questions people ask
How do I use the Smoke and CO Alarm Planner?
Fill in the fields, starting with “Floors (not counting basement)” and “Bedrooms”, and change any other options that match your home. The answer, a drawing and practical tips update as you type, and the Copy link button saves your numbers in a link you can share.
Is the Smoke and CO Alarm Planner free?
Yes. The Smoke and CO Alarm Planner is free, with no sign-up, and works on phones, tablets and computers. The results are estimates to help you plan, so check with a qualified professional before structural, electrical, gas or plumbing work.