First Alert Smoke Alarm Chirping Every 40 Seconds [FIXED]


A First Alert Smoke Alarm that’s chirping every 40 seconds can be pretty annoying and concerning. But don’t worry, this won’t be a difficult problem. 

First, let’s go over some basic information about smoke alarms. Smoke alarms are designed to alert you in case of a fire by detecting smoke in the air.

Most smoke alarms use a battery to power the alarm, and they often have a low battery alert that chirps every few minutes or so to let you know that the battery needs to be replaced. However, if your smoke alarm is chirping every 40 seconds, it’s likely not a low battery issue.


first alert smoke alarm chirping every 40 seconds

First Alert Smoke Alarm Chirping Every 40 Seconds [FIXED]

So, what could be causing the chirping? Well, there are a few possibilities. One possibility is that the smoke alarm is malfunctioning and needs to be replaced. Another possibility is that there’s dust or debris on the smoke alarm that’s causing it to malfunction. Let’s go over some steps to help you troubleshoot the issue:

Step 1: Check the Batteries

The first thing you should do is check the batteries in your smoke alarm. Even if you don’t think it’s a low battery issue, it’s always a good idea to check the batteries first. Make sure the batteries are properly installed and have enough charge. If the batteries are low, replace them with new ones.


Step 2: Clean the Smoke Alarm

If the batteries are not the issue, then the next step is to clean the smoke alarm. Dust, debris, and insects can accumulate on the smoke alarm and cause it to malfunction.

Using a soft brush (you can also use a vacuum cleaner), clean the smoke alarm. Be gentle so as not to damage the smoke alarm. Once you’ve cleaned the smoke alarm, test it by pressing the test button. If it still chirps every 40 seconds, move on to the next step.

Step 3: Reset the Smoke Alarm 

If cleaning the smoke alarm didn’t fix the issue, then the next step is to reset the smoke alarm. To do this, first, turn off the power to the smoke alarm by flipping the circuit breaker.

Then, remove the battery from the smoke alarm. Wait for a few minutes, and then put the battery back in and turn the power back on. Test the smoke alarm by pressing the test button. If it still chirps every 40 seconds, move on to the next step.

Step 4: Replace the Smoke Alarm 

If none of the previous steps have fixed the issue, then it’s time to replace the smoke alarm. Typical smoke alarms can last for about 10 years, so if your smoke alarm has reached the lifetime limit, it’s definitely time to replace it.

Even if your smoke alarm is newer, if it’s chirping every 40 seconds and none of the previous steps have fixed the issue, it’s likely that the smoke alarm is malfunctioning and needs to be replaced.

How to Maintain The First Smoke Alarm

Your smoke alarm is your first line of defense against a fire, and it could mean the difference between life and death. That’s why it’s so important to make sure that your smoke alarm is functioning correctly and is always in good condition.

Let’s dive right in and talk about how to maintain your first smoke alarm.

Step 1: Test Your Smoke Alarm

The first thing you should do when it comes to maintaining your smoke alarm is to test it. You should do this at least once a month, and it’s super easy to do. All you need to do is press the test button on the smoke alarm, and it will sound an alarm if it’s working correctly.

If the alarm doesn’t go off, then you may need to replace the batteries. Most smoke alarms will have a low battery indicator, but it’s always a good idea to replace the batteries every six months, just to be safe.

Step 2: Keep Your Smoke Alarm Clean

Smoke alarms can get dirty over time, and this can affect their performance. To keep your smoke alarm working correctly, you should clean it at least once a year. Clean it to remove any dust or debris from the smoke alarm.

It’s also essential to keep the smoke alarm free from any obstructions. You should never hang anything from the smoke alarm or cover it up with anything. This could prevent the alarm from working correctly in case of a fire.

Step 3: Replace Your Smoke Alarm

Even if you take good care of your smoke alarm, it’s essential to replace it every ten years. Smoke alarms can wear out over time, and their performance can deteriorate. So, if your smoke alarm is ten years old or older, it’s time to replace it.

You should also replace your smoke alarm if it’s been damaged or if it’s not working correctly. This is not something that you should put off. Remember, your smoke alarm could mean the difference between life and death in the event of a fire.

Step 4: Have a Plan

Maintaining your smoke alarm is an important part of fire safety, but it’s not the only thing you need to do. You should also have a plan in place in case of a fire. This includes knowing how to get out of your home quickly and safely, and having a designated meeting spot outside.

You should also make sure that everyone in your household knows what to do in case of a fire. This includes practicing your fire escape plan with your family and ensuring everyone knows how to use a fire extinguisher.

Wrapping Up

If your First Alert Smoke Alarm is chirping every 40 seconds, first check the batteries, then clean the smoke alarm, reset the smoke alarm, and if none of those steps fix the issue, replace the smoke alarm. Remember, smoke alarms are an important safety feature in your home, so make sure they’re working properly to keep you and your family safe!