Smoke Alarm Beeping in the Night – A New Help Guide

Smoke alarm beeping in the night and keeping you awake? Whether you have a mains powered, interlinked smoke alarm or a battery powered smoke alarm, follow our guidance below to troubleshoot the beeping.

What sound is your alarm making?

Alarm is sounding continuously

  • First check there is no smoke or fire in your property
  • Make sure the beeping is definitely coming from your smoke alarm. Other alarms in the property such as a carbon monoxide alarm or burglar alarm could be responsible for the noise.
  • Clean the alarm if it is dusty or dirty. Vacuum around the alarm or use a hairdryer to blow out dust on a cool setting.
Replace by date on the back of a smoke alarm
Replace by date on back of smoke alarm
  • Check the replace by or manufacture date on your alarm. Smoke alarms usually last for a maximum of 10 years, so if the manufacturing date is approaching 10 years or more than 10 years, it’s time to get a new alarm. Sensors inside the alarm deteriorate after this time causing the alarm to be less effective.
  • Check the position of your alarm. There are different types of smoke alarm suitable for specific locations in your home. Find out more below about positioning your alarm.
  • Your smoke alarm may be damaged or have developed a fault. Exposure to water, fire, grease and certain types of paint can cause a fault to develop.

Alarm is beeping intermittently

  • Replace the battery* in your smoke alarm. Ensure you are using the correct battery type and are inserting it the correct way around. If the battery is low, it is more likely to sound at night as a drop in room temperature can impact the battery’s ability to power the alarm.
  • Check the manufacture date on your alarm. Smoke alarms usually last for a maximum of 10 years, so if the manufacturing date is approaching 10 years or more than 10 years, it’s time to get a new alarm. Sensors inside the alarm deteriorate after this time causing the alarm to be less effective.
  • Your smoke alarm may be damaged or have developed a fault. Exposure to water, fire, grease and certain types of paint can cause a fault to develop.

* All new or recently extended homes should have mains powered, interlinked alarms fitted which also have a back-up battery. Intermittent chirping in mains-powered alarms is often caused by low power in the back-up battery.

What to do next

Suspect a fault?

If you suspect your smoke alarm has developed a fault, replace it as soon as possible. If you bought your alarm from Safelincs, you may be covered by warranty as all of our alarms have a minimum guarantee of 5 years. If you need a new smoke alarm, browse our range of battery smoke alarms or mains powered alarms.

Need replacement batteries?

Smoke alarms usually require either Alkaline AA batteries, an Alkaline 9V battery or a Lithium 9V battery. Buy replacement smoke alarm batteries as soon as possible.

Mains powered smoke alarm need replacing?

Mains powered smoke alarm beeping in the night

Whether your smoke alarm is mains powered or battery powered, it should be replaced after 10 years due to a deterioration of the sensors. Battery alarms are easily changed and installed, but how do you replace a mains powered alarm? Most mains powered alarms can be replaced without the need for an electrician if you purchase an Easichange® replacement head.

Replace BRK 600 or 700 series Smoke Alarm
Help with a Ei / Aico mains powered Smoke or Heat Alarm

Discontinued alarm need replacing?

If you need to purchase a replacement alarm, but find that your existing model has been discontinued, you can check our replacement models guide to find the closest match.

Smoke alarm positioned correctly?

The type of sensor an alarm has determines where it should be positioned in the home. False alarms may be due to the wrong alarm type being used in or near a steamy, dusty or smoky environment.

  • Heat alarms are more suited to areas such as the kitchen or garage that are often smoky or dusty. Other types of sensors would be prone to false alarms in these areas.
  • Optical smoke alarms are ideal for bedrooms, living rooms and ground floor hallways.
  • Ionisation smoke alarms are ideal for use on landings, but will be prone to false alarms if located near a kitchen.

To avoid causing false alarms or affecting the performance of an alarm, it is good practice to avoid installing alarms in the following locations:

  • Next to a door, window, air vent or fan that would create a draft
  • Outside
  • Anywhere that airflow would be obstructed by curtains or furniture
  • Locations that are steamy or humid such as a shower room

Find out more about positioning your smoke alarm in your home or take a look at our help guides for more information about types of alarm sensor.

Always ensure you act as quickly as possible to change or replace a defective smoke alarm or you could be endangering lives. If you require any further assistance, contact our customer service team on 0800 612 6537 or email support@safelincs.co.uk.

Mel Saunders

Mel Saunders

Marketing Designer

Mel joined our team at the start of 2020. She creates our marketing materials and manages our social media accounts.

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