Article Summary:
Place your Nest Protect alarm on the ceiling to monitor both smoke and carbon monoxide levels. If you have additional questions on where to install your alarm, follow the guidance of fire and local authorities.

Generally, you’ll just need to replace your current smoke and carbon monoxide alarms. However, you should be aware that existing alarms may not be installed in the right place. You will want to ensure that you have the right number and placement of alarms for your home even if you already have alarms installed.

Which rooms in my home need a Nest Protect?

Learn how to install Nest Protect

Below are 4 diagrams showing where Nest Protect should be installed within a room according to the National Fire Protection Association (NFPA).

If you’re installing Nest Protect on the ceiling, mark where the screws will go using the backplate as a guide. Make sure you’re at least 4 inches (10 cm) away from the wall and the Nest Protect logo is upright.

If you have a slanted or cathedral ceiling, the best placement is 4” to 3' (10cm-1m) from the highest point.

In addition to these guidelines, state and local jurisdictions may have their own requirements for alarm type, placement, and installation. Please consult your local building codes and fire authorities to determine additional requirements that may apply in your location.