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Frequently asked questions


I frequently grill in the garage. Will it go off all the time?


You should never barbeque in the garage with the doors to the inside of the house and outside of the garage open or closed. CO can seep into adjacent rooms even with the building doors closed.


My water heater is in my bathroom. Can I put the COSTAR® in my bathroom?


Not recommended because your shower fogs up the bathroom. You may  install your COSTAR® alarm immediately outside the bathroom, perhaps over the bathroom door.


Will the COSTAR® interfere with my smoke alarm?


No. In fact during a fire, carbon monoxide is generated at life threatening levels and both your smoke detector and your carbon monoxide detector should go off.


I live in an apartment and everything is electric. Do I still need one?


Yes, you never know what your neighbor is doing as you share walls and ventilation systems. If you have a wood-burning fireplace, carbon monoxide could be present.


I have an air purifier. Can I use the COSTAR® CO alarm in the same room?

Yes, the air purifier won’t affect the functioning of your CO alarm.


Where do I install my COSTAR® carbon monoxide alarm?

The product’s instruction manual describes this in detail but you will need to install the carbon monoxide detector on a wall close to the ceiling, on the ceiling or on a high shelf. 


Can I just put the COSTAR® CO alarm on my furnace?

No. You can place the CO alarm unit in the same room but we recommend at least five feet away.


How do I know if my carbon monoxide detector or CO alarm is working?

The COSTAR® CO alarm comes with a test button that can be pressed. After pressing the test button the alarm will beep four times and then repeat that sequence one more time.


How do I clean my carbon monoxide detector or CO alarm?

You may vacuum or dust it but should not use any cleaners or paint near the CO alarm.

If you are cleaning with strong solvents such as ammonia you should ventilate the area to protect your health and protect the CO alarm from ammonia.  Ammonia and amines from cat urine can reduce the life expectancy of your alarm.  In normal operation it should last for 6 years.  If it is nearly 6 years old you should replace your alarm with a new one.