The Results Are In: Top 4 CO Detectors

All CO Detectors Are Not Created Equal
February 6, 2012
SEER Made Clear
February 13, 2012

A carbon monoxide (CO) detector is the kind of thing you want to know works.  This is one indoor air quality issue that cannot go unchecked. You can find detectors that need to be hardwired into your Hilton Head electrical system as well as simpler plug-in and battery operated models. To sort out which detectors are the most reliable we consulted professional reviews; user reviews shone light on the models that are durable and easy-to-install.  Your Hilton Head indoor air quality specialist will be able to help you with any installation questions you may have.

First Alert CO615 – best reviewed

Plug-in carbon monoxide detector


  • Can plug into any outlet
  • Display shows both current and peak CO levels
  • Includes battery backup
  • Cord allows for flexible placement


  • Battery door hard to close
  • Button required for display


Battery-operated carbon monoxide detector


  • Battery powered
  • Placement flexibility
  • Constant digital readout
  • Seven-year sensor lifespan


  • Requires battery replacement
  • Slower response time than some models
  • Some functioning issues

First Alert Onelink SCO501CN

Interconnecting CO detector/smoke detector


  • Interconnects wirelessly
  • Easy to install
  • Photoelectric smoke sensor
  • Voice warning
  • Six-year replacement alert


  • Expensive
  • No digital display
  • Doesn’t detect flaming fires


Budget combination alarm


  • Inexpensive
  • Easy to install
  • Combination smoke and CO detector
  • Voice warning
  • Seven-year sensor lifespan


  • No display
  • Doesn’t detect smoky fires


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