Learn how to safely test the carbon monoxide detection function in your combination smoke detector. Follow these easy steps to ensure your home stays protected.
Head of Content, D. Gorenko
Updated June, 5
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Before testing the carbon monoxide (CO) detection feature of your combination smoke and CO detector, ensure that your device indeed combines both functionalities. Combination detectors typically have clear labeling or indicators on their face or packaging stating they detect both smoke and carbon monoxide. Review the user manual provided by the manufacturer carefully to verify the presence of this dual capability.
Combination smoke and carbon monoxide alarms include a standard 'test' button to ensure basic electrical function. Pressing and holding this button for several seconds should produce a loud sound, triggering both the smoke and carbon monoxide audible signals sequentially. Listen carefully to distinguish two different alarm tones: smoke alarms usually sound with a series of rapid beeps, while carbon monoxide warnings often produce a continuous set of short or longer continuous beeps. Check the alarm’s instruction manual for specific beep patterns or voice warnings relevant to carbon monoxide.
While the test button confirms electrical functionality, it doesn't fully validate the sensor's reaction to actual carbon monoxide gas. To thoroughly test carbon monoxide functionality, it's advisable to utilize a specialized carbon monoxide detector testing spray or canned CO test gas, which simulates the conditions under which your detector would sense real carbon monoxide.
For accurate and safe testing, follow these detailed guidelines:
Never test carbon monoxide detection using car exhaust, combustion appliances, or household CO sources; these sources pose serious health hazards during testing.
After testing is complete, open windows in the test area momentarily to dissipate test gases effectively. Your detector may require reset procedures outlined in the manual. Typically, the device automatically resets after sensing clean air or after you press the reset button for several seconds. Ensure the device status properly returns to 'Ready' or 'Normal' operation conditions after testing.
Testing should take place regularly, typically each month, to ensure that the device is working optimally and your house stays safe.
Carbon monoxide sensors do expire over time, often needing replacement every five to seven years, depending on the manufacturer's recommendations printed within your manual or on a sticker on the detector itself. If the device fails to respond during a test or if the designated expiration date has passed, promptly replace the unit with a new one to maintain protective coverage.
While routine testing is often straightforward, situations occasionally arise where professional advice and assistance are beneficial. If your combination CO and smoke detector repeatedly fails testing or raises other concerns, contacting a professional is advisable. Expanding residential and commercial properties in cities like St Louis and Nashville often benefit significantly from professional maintenance as part of a comprehensive safety strategy.
Routine professional maintenance can include:
Remember, periodically verifying carbon monoxide detection within your combination detector is critically important for the safety and health of yourself, family members, visitors, and those around you.
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SERVING
Brentwood, MO
1025 Hanley Industrial
Brentwood, MO 63144
Nashville, TN
45 Willow St.
Nashville, TN 37210
St Louis Location
(314) 664-3011
St Louis Location
1025 Hanley Industrial Brentwood, MO 63144
Nashville Location
(615) 515-3015
Nashville Location
45 Willow St Nashville, TN 37210
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