- Never purchase a CO detector that is not UL (Underwriters Laboratories, Inc.) approved or does not have a long-term warranty.
- Many CO detectors tested performed well. Others failed to alarm at even high levels of CO and others alarmed at levels too low to be concerned about. Do not use a CO detector in place of proper maintenance and ventilation.
- Research features before buying.
- Make sure the detector you purchase is easily self-tested and reset to ensure proper functioning.
- Don't select a detector based solely on cost.
- Make sure you have enough detectors to cover your entire house.
- Carefully follow manufacturer's instructions for placement, use and maintenance.
- For maximum effectiveness during sleeping hours, place detectors as close to sleeping areas as possible.
*some of the info in the carbon monoxide series came from service master.
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