Fix Smoke detector beeping NOW (+3 best replacement detectors)!

Stop the beep! – Diagnose and stop Smoke Detector Chirping & Beeping

Stop the beep! Use a step stool to reach the reset button. Press the button, remove the battery cover, check and replace the battery. If smoke is a possibility then open a window to the room out.

Why do smoke detectors beep?

Smoke detectors beep for a variety of reasons. The most likely being:


Too much heat or smoke can lead to a smoke detector going off. If you cook greasy food with a lot of smoke, you may set off your detector.

  • Quick fix. Open a window, turn on a fan. Get a chair or step stool to reach the button in the middle of the smoke detector. Press it hard until it resets (a second or 2). This should take care of the beeping.


The battery is often the problem. If you are not cooking and there is no smoke or heat by the smoke detector then check and replace the battery.

  • Quick fix. Make sure it is firmly seated in the smoke detector and close the lid tightly. The beeps should go away. If they don’t then you have another issue to diagnose. Make sure all the connections are tight and the red or green light is on.


Most newer smoke detectors are hardwired with a battery backup in case the power goes out.

  • Quick fix. If your smoke detectors are daisy-chained together then they could be on a series where if one goes off then they all go off.
  • Find the smoke detector that started all the noise and unplug it. Check the battery, replace it as in the steps above. Wipe away any dust on the smoke detector and check the electrical connection with a wire tester. Plug the power plug back in and push the reset button.

This should solve your problem.

Sensor blocked

Your sensor may be blocked by dust or incorrect placement in the smoke detector fixture.

  • Quick fix. Untwist the smoke detector from the support housing and unplug the power and remove the battery. Follow the same procedure as above for power and battery – just in case.
  • Then remove any dust on the smoke detector with an air blast can or with a rag. Make sure to remove all the dust so the sensor is clear. Replace the smoke detector and reset the button.


Is your house too hot or has it suddently warmed up? If so, this could be the problem.

  • Quick fix. Open a window near the detector to cool it down. Check around the area to make sure there is not any smoke or reason for the beeping. Press the reset button and the beeps should go away.

Other faulty smoke detectors in the house

Other faulty smoke detectors in the house could be the cause as well. Check each one to see if the battery needs to be replaced. Reset each unit and the beeping should go away.

Stopping hard wired smoke detector beeping

How to reset a smoke alarm?

First: Press and hold the reset button for 3 seconds. This should reset the unit. Some units require you to hold the unit for 10 seconds.

If that doesn’t work: Flip the breaker to reset the unit.

Finally, if it is still beeping: Unplug the smoke detector from the power supply and disconnect the battery for 20 seconds so it completely is turned off. Plug it back in, replace the battery and reattach it to the ceiling.

Why does my smoke detector keep beeping even after I change the battery?

There are several reasons.

  • Not reset correctly
  • Bad battery that was not fully charged
  • Bad connection
  • Improperly seated battery not making full contact with the springs.
  • Bad smoke detector. Smoke detectors should be replaced every 8-10 years. When was the last time you checked your smoke detector?

Smoke detector beeps once a day. Why?

Smoke detectors are either going to beep 3 times or 1 times depending on the issue. The battery is the most likely issue

  • Low battery is likely the issue
  • Contact with may be poor
  • Battery lid is not fully closed.
  • Possible temperature change in the home

Smoke detector beeps 3 times

The battery is the most likely issue.

  • It is either dead & needs to be changed
  • It is not correctly sitting in the detector and needs to be readjusted
  • Error codes still remain in the smoke detector. Clear your errors to fix this issue.
  • Possible dust, dirt is blocking its sensors, causing malfunctions

Smoke detector beeping – possible malfunction

Smoke detectors are only made to last 8-10 years max. So, a malfunctioning smoke detector could be beeping and need to be replaced. The safety of your family relies on your smoke detectors working. If they are over 10 years old then you need to replace them.

3 Best Smoke Detectors

Highest rated, most dependable smoke detectors to keep your family safe


Best Bedroom Smoke Detectors

Loud “FIRE” Announcement


Best Wifi Smoke Detectors

Phone Alerts & Nest Wifi Combo Smoke Alarm


Best for connecting multiple together

Create a MESH Network or connect with Nest, other smart home systems

Most deaths, injuries, and damage from child playing fires occur in home structure fires.

Thirty-nine percent of these fires began in the bedroom, 8% in the kitchen and 6% in a living room, family room or den. –NFPA

# 1 Best Bedroom Smoke Alarm

Kidde Battery-Operated (Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning

The Kiddie battery-operated combo smoke detector is great for bedrooms or areas that don’t have a dedicated hardwired plug for hardwired smoke detectors – it Loudly Announces “FIRE” so the kids will quickly escape. We put this smoke detector in our kid’s room since it didn’t originally come with one installed. Every year there are thousands of fires that kids start in their bedrooms by playing with matches or fans & appliances that catch on fire. You can get the smoke detector here at Amazon.

Rating: 4.5/5 Excellent

Recommended For: People looking for a combo detector that Loudly Announces “FIRE”

Combo & Battery

Combo smoke & CO2 detector
Does not require hard wiring
Easily place in any location.
Ideal for bedrooms (dual alerts)

Alerts & Voice

Voice mode feedbackAnnounces “FIRE”, hush mode and if CO2 is present
Loud alerts. If there is a fire it will announce “FIRE” as well as sound an audible alarm


5-year warranty

# 2 Best Wifi Smoke Alarm

Google Nest Protect, 2nd Generation

The Nest wifi combo smoke and carbon monoxide detector has several features that will blow your socks off. (Voice alerts, split spectrum sensors search for fast and slow-moving fires, PHONE ALERTS so you are always informed of the safety of your home). Get PEACE OF MIND!

Rating: 4.5/5 Excellent

Recommended For: Homeowner looking for everything + Phone Alerts

You can get the Google Nest Smoke Alarm here on Amazon.

Combo & Battery

Combo smoke & CO2 detector
Does not require hard wiring
Easily place in any location.
Ideal for several rooms)

Alerts & Voice

Phone Alerts, notifications. Always be informed.
Voice mode feedback – voice announcements on battery level, and if CO2 is present
Loud alerts. If there is a fire it will announce “FIRE” as well as sound an audible alarm


5-year warranty

# 3 Best Best for connecting multiple together

First Alert ZCOMBO 2-in-1 Smoke Detector & Carbon Monoxide Alarm, Z-Wave Combo

The First Alert 2-in-1 Smoke Detector & Carbon MOnoxide Alarm Combo is as good as they come… is great for ANY ROOM, connects with ring and other smart home systems, is wireless. This next-generation technology that allows you to create a home MESH Network and interconnect your smoke detectors via Nest.

Rating: 4.5/5 Excellent

Recommended For: Homeowner looking to create Smoke Detector Network and connect to Nest or other Smart Home System.

Combo & Battery

Combo smoke & CO2 detector
Does not require hard wiring
Easily place in any location.
Ideal for ANY ROOM

Alerts & Voice

Voice mode feedback – voice announcements on battery level, and if CO2 is present
Loud alerts.


7-year warranty
Excellent Customer Service

This detector has does everything except put you to bed at night.

Combo Detectors

Every house needs a smoke detector & CO2 detector and most need a carbon monoxide detector. Should you get a combination detector or get 2 dedicated detectors? Combos are often cheaper though. We show you the recommended detectors by experts and consumer organizations.

Inhaling some amounts of carbon monoxide happens here and there. This includes using a gas stove or sitting near a fireplace. It is harmless. However, exposure to a lot of carbon monoxide is a health risk.

Having smoke detectors and CO2 detectors in your home is imperative bearing in mind that it can be hard to detect. You can’t see or smell carbon monoxide. Even though smoke and CO2 detectors can be costly, the benefits they offer are priceless. This is why they should be a necessity in a home.

When looking for the best smoke and carbon monoxide detectors, consider your personal needs. Some of the basic types to choose from include

Basic Detectors

Basic detectors come with unique carbon monoxide detection capabilities. They come with an alarm that indicates if there is a lot of carbon monoxide that exceeds a certain level. Today, you will find quality basic detectors in the market. They are hardwired and battery-powered options. You can only use basic options if you have a separate smoke detection unit in your home.

Smart smoke detectors and CO2 detector is one of the latest detectors in the market. This is a combination detector that is competitively priced and quite effective in detecting even the lowest levels of smoke and CO2.

Some models of this type of detector can also alert you whenever you are away from your house if there is smoke or carbon monoxide in your home.

CO2 and Smoke Detectors Combo

If you do not want to purchase separate smoke and carbon monoxide detector, the combination option is the best to settle for. This is an affordable detector that is expensive compared to the basic detector. It is a detector that saves you the expenses of installing different units in your home.

What Determines the Best Smoke Detectors and Carbon Monoxide Detectors


  • Smoke and carbon monoxide detectors are generally easy to use. However, some are easier to use compared to others. For instance, battery-powered detectors require new batteries often.
  • The combo option comes with a silence detector. This is usually ideal if you live in a place where the detector is more likely to cause a false alarm.
  • Similarly, a digital combo detector allows you to check the level of carbon monoxide in your home. The detector comes with an alarm that is designed to last long.
  • Ionization smoke and carbon monoxide alarms are designed to detect the smallest amounts of smoke and CO2.
  • Photoelectric smoke detectors come with sensors that detect different types of smoke.
  • Dual or combo smoke detectors, on the other hand, are a combination of photoelectric and dual-sensor detectors.


Smoke and CO2 detectors are designed to alert you of higher levels of these toxics in your smoke. However, if you need a reliable detector that will give you an alert with low CO2 levels, go for low-level detection units. Detectors with a digital display, on the other hand, offers periodical alerts. Therefore, choose wisely.

A detector that has a UL rating meet sensitivity basic requirements. In this case, if your residential place has specific regulations on carbon monoxide detectors, ensure that the detector you pick meets given requirements.

Source of Power

Combination smoke and CO2 detectors are either hardwired or battery-powered units.

Hardwired detectors are usually harder to install and use. If you have been using a hardwired unit, you can replace with the sense. You can consider hardwired units that come with separate backup batteries. They help to keep the unit functional even if the power goes off in your home.

Battery-powered detectors, on the other hand, are easy to install and use. They are also affordable and they continue to work in the event of a power outage. Battery-powered units need proactive maintenance. This means battery replacement is crucial when the need arises.


The installation process of detectors is also important in choosing the best detectors. Battery-powered detectors are easy to install compared to hardwired detectors. This doesn’t mean that hardwired units cannot be efficiently managed in a home.


A good detector should be loud enough to alert everyone when there is a danger. Models that give a voice alarm come in handy if you want multiple connected detectors. It is advisable to choose detectors with 85 decibels that can wake up heavy sleepers.

Remote Alerts

Smart smoke and carbon monoxide detectors are some of the best units to settle for. They allow you to use an app on your phone so that you can get alerts at home and when you are away. Whenever CO2 levels rise in your home, smart detectors will help you to keep your home safe. If you are not able to settle the issue at hand, you can always alert relevant authorities.

Detector Features

It is equally important to consider the features of a detector. Detectors that come with a digital display are easy to use and to program. They give you alerts whenever there is any amount of CO2 in your home and not just when there are higher levels.

Naturally, detectors are loud. However, the best comes with a silence button that allows you to turn off the noise in case of false alarms.

A good detector should also offer notification to give you the notice whenever there is smoke or CO2 in your property. Combination detectors are therefore the best.

You should also take a look at the leading brands in the market to choose the best units. First Alert, Kidde, and Nest are some of the leading brands to invest in.

With this information in mind, it is without a doubt that combination smoke and CO2 detectors are the best to buy. They can detect any level of smoke and CO2 in your house. They are easy to install, use and they are durable. They help to protect you and your property from possible health risks caused by smoke and CO2.

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D. Hahn

DIY guru, dad, husband, blogger. When I'm not creating life hacks I'm teaching my kids how to fix stuff after their dad breaks it.

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