If you are looking to stop hard wired smoke alarm chirping, you are not the first person to notice this problem and find it frustrating. You want to find peace and quiet and peace of mind that your system is functioning correctly. Some people get so frustrated that they remove the system altogether. This is dangerous (if you don’t replace your smoke alarm with a battery-operated alternative immediately) and may also be unnecessary. Read on for some tips to help you determine the cause and to stop hard wired smoke alarm chirping.

How annoying is it to sit and listen to an incessant chirping? Most of us are accustomed to false alarms — which are a relief, of course but annoying when your fire detection system goes off every time you make toast or open your oven. But with a scenario such as that, you know that once there is some fresh air and / or a reduction in the temperature of the area, the sound will go away. The machine is just doing its job, after all. But the chirping that repeats every hour or so… what to do about that?

Read Your Manual

The manual can help you troubleshoot to figure out hard wired smoke alarm problems. Some smoke alarms (burglar combination or otherwise) that are hard wired come bundled with home alarms systems so check your manual if that is the case. If the system was hard wired when you bought or moved into your house and you do not have a manual, look for a sticker with manufacturer information. Then, you may be able to contact the manufacturer for help and / or a new manual.

Some chirping is built-in to alert you of various potential issues with the equipment. The manual may have a legend indicating the frequency of the chirping with a resulting action. Some results could include: low back-up battery, machine malfunction, significant temperature change in the room, and other issues as well. If you’re hard wired smoke alarm chirping has nothing to do with your home security burglar alarm, you may want to check for a back-up.

Back-up Batteries

A reason for smoke alarm chirping may have to do with the back-up batteries. A hard wired smoke alarm will often have a back-up battery in case of power failure and if this battery is low or totally dead, your alarm may chirp to let you know. Try replacing the battery to see if the issue has corrected itself. Most people follow the advice of changing all smoke alarm batteries at least twice a year. If you live in an area with daylight savings time, the start and end dates are good dates to remember to check smoke alarms, carbon monoxide detectors, and other household devices, such as your home security burglar alarm for any deficiency.

Call an Electrician

The advice of an electrician may be needed to help you resolve the issue. The electrician may need to make setting adjustments to the smoke alarm and help you resolve issues to stop hard wired smoke alarm chirping and restore peace and quiet (and peace of mind) to your home.

Kidde KN-COSM-IB Hardwire Combination Smoke and CO Alarm with 9V Battery Backup Employs both smoke and carbon monoxide sensors. Inter-connectable to provide improved protection Features a hush button to silence the alarm for non-emergency situations like a smoky dinner.

Protects from two different hazards, smoke and carbon monoxide. View larger.

Provides the recommended protection of an interconnected system. When one alarm goes off, they all do. View larger.

Provides the recommended protection of an interconnected system. When one alarm goes off, they all do. View larger.

Combination Smoke/CO Alarm for Improved Safety
The Kidde Combination Carbon Monoxide & Smoke Alarm includes a voice warning system that eliminates confusion and clearly warns you and your family of a smoke or carbon monoxide danger, or if your battery is in need of replacement or your alarm is in hush mode.

Alarm Warnings
Fire: The red LED will flash and be accompanied by three long alarm beeps followed by a verbal warning message “Fire! Fire!” The alarm will repeat pattern until smoke is eliminated.

Carbon Monoxide: Four short alarm beeps followed by a verbal warning “Warning! Carbon Monoxide!” This continues until the unit is reset or CO is eliminated.

Low Battery: One chirp followed by warning “Low Battery” The red LED light will flash. This pattern will continue every minute for the first hour. After the first hour the red LED light will flash once every minute accompanied by the chirp sound. The low battery warning will only sound once every fifteen minutes.

Voice Hush Indication: “Hush Activated” and “Hush Cancelled” voice announcement

Peak Level Memory: If the alarm had detected a CO level of 100ppm or higher when the Test/Reset button is pressed, the unit will announce “Carbon Monoxide Previously Detected” to warn of the CO incident.

Inter-connectable for Improved Safety
Fire and consumer experts recommend interconnected alarms for added protection. According to the National Fire Protection Association (NFPA), most Americans feel they are more at risk of being a victim of a tornado than of a house fire. Actually the opposite is true. Fires are more common than any other disaster that strikes a family at home, and can become deadly in minutes.

You have on average less than three minutes from the time you hear a smoke alarm to escape a fire. The sooner you hear an alarm, the sooner you can get out safely. Smoke alarms that link together so that when one goes off, they all go off, are called interconnected alarms. These alarms provide more warnings in more places, giving your family more time to escape a house fire. Houses built after 1993 are required by building codes to have interconnected alarms that are wired into their electrical system.

Trademarked Hush Feature for Convenience
By pressing the Hush button, you can easily and safely silence nuisance alarms caused by non-emergency situations, such as overcooked dinners.

This feature desensitizes the alarm for approximately ten minutes. If the smoke is not too dense, the alarm will silence immediately, the unit will verbally announce “Hush Mode Activated,” and the green LED will flash every 2 seconds for approximately 10 minutes.

Reliable 9-Volt Battery Backup, Indicator LED, Test Feature, Low Battery and End-of-Life Warning

The alarm’s 9-volt battery backup provides continuous protection, even during power outages. Because this alarm only helps protect you if it’s working, this unit features a red LED that flashes every 30 to 40 seconds to indicate that it is operating correctly. For additional peace of mind, the alarm also contains a test/reset button that enables you to periodically test its circuitry and horn.

If any form of battery failure is detected the red LED light will flash and the unit will “chirp” one time, followed by the warning message “Low Battery.” This cycle will occur once every minute, and will continue for at least seven days.

Seven (7) years after initial power up, this unit will “chirp”every 30 seconds. This is an “operational end of life” feature which will indicate that it is time to replace the alarm. UL 2034, the independent standard applicable to CO alarms, requires CO alarms to have an end of life warning. This requirement went into effect in March 2007, meaning any CO alarm manufactured after April 2007 with a UL listing must have this feature. Most states that require CO alarms in residential dwellings mandate that the alarm meet the UL 2034 standard.

The unit measures just 5.75 inches in diameter and 1.7 inches deep, and it features a neutral, white finish. It includes tamper resist features to deter vandalism or theft. This combination smoke/CO alarm is UL listed, so you can be confident of its quality, and it is backed by a 5-year limited warranty.

About Kidde: A UTC Fire & Security Brand
Renowned for global leadership in fire detection and suppression, Kidde provides solutions ranging from portable fire extinguishers to advanced industrial controls such as flame detection and explosion suppression systems. Kidde is a UTC Fire & Security brand, with a history that’s rich with innovations, from the patent of the Chubb Detector Lock in 1818 to the development of the world’s first wireless networked smoke detectors in 2004.

What’s in the Box
Combination smoke and carbon monoxide alarm with mounting bracket and mounting hardware, quick-connect wiring harness, one 9 volt battery, a 5-year limited warranty and a bilingual (English/Spanish) user’s manual.

The leading cause of accidental poisoning deaths in North America, Carbon Monoxide is odorless, tasteless and invisible. It is a silent killer. Kidde CO alarms include the most accurate sensing technology available, the patented Nighthawk electrochemical sensor. This unit combines a Carbon Monoxide and Ionization Smoke Alarm, providing two important safety devices in a single unit. This alarm includes a voice warning system that announces “Fire, Carbon Monoxide, Low Battery or Smart Hush Activation.” The voice alarm eliminates any confusion and clearly warns you and your family of a smoke or carbon monoxide danger, or if your battery is in need of replacement. This unit is hardwired and will work with many interconnected systems. This combination alarm has battery backup, protecting you and your family even during a power outage when many incidences occur. Install at least one CO alarm on every floor and in sleeping areas. Make sure CO and Smoke alarms are at least 15 feet away from cooking or heating appliances to prevent false alarms. Replace CO alarms every 5 to 7 years to benefit from the latest technology upgrades. Ionization sensing alarms may detect invisible fire particles associated with fast flaming fires sooner than Photoelectric alarms. Studies show both types will effectively detect either type of fire. For optimal protection, install both smoke alarm technologies in your home.