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Smoke & Carbon Monoxide Detectors: What to Look For & When to Replace

Smoke alarm maintenance & installation should be taken very seriously. Here's what you can do to protect your home today!


How to tell if your detection systems need to be replaced:

1. Pay close attention to the colour & physical condition of the alarm:

  • If you noticed that it has a yellow hue or is showing visible/physical signs of aging or deterioration, then it needs be replaced.

2. Even if the unit appears to be in good physical condition:

  • You should always make sure that the unit has fresh batteries.

  • Most alarms will begin to "chirp" when the batteries are running low. As a general rule of thumb, you should replace them with fresh batteries at least once per year.

  • After installing the new batteries, be sure to hit the test button located on the unit to make sure it is in working order.

  • Additionally, you can also purchase an aerosol smoke detector test spray to further inspect your unit. These test canisters/sprays are widely available at most hardware stores.

3. Even with fresh batteries:

  • If your detection system appears to malfunction or sound at random times on a frequent or infrequent basis. We recommend that you replace it.

4. Smoke & Carbon Monoxide Detectors should be replaced every 10 years or sooner (regardless of appearance or functionality).

  • If you're unsure how old your detection units are or when they were installed, then we recommend you have them replaced.

  • When it comes to the safety of your home and family, this is an area of home maintenance that should be a top priority. And for your peace of mind, it's better to be safe and confident knowing that these systems are in working order.


Should you install / replace your detection systems on your own?

*For your safety, we recommend that you seek the assistance of a qualified electrical professional to handle the installation and/or replacement of your smoke and carbon monoxide detection systems.


When should you give us a call?

  • If you've replaced your batteries, gone through the visual and physical inspections/ troubleshooting steps listed above and are still having issues with your unit. Or, if you're unsure about anything listed above, feel free to give us a call and we'll be happy to assist you!


Whether you're planning a home renovation project, looking at installing new appliances, or have questions about your existing electrical systems, give us a call today to see how we can help!

Get in touch to find out more about how we can help, or schedule a service call or free in-home consultation online today.

Blais Electric | 226-702-8378 |


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