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CO Detector

A carbon monoxide detector that monitors for the colorless, odorless gas produced by combustion. Required safety equipment on all RVs.

Also called: CO detector, carbon monoxide detector, CO alarm

A CO detector is a carbon monoxide detector that monitors for the colorless, odorless gas produced by combustion in RV appliances and generators. CO poisoning is one of the most dangerous and common causes of camping fatalities.

Required safety equipment on all modern RVs.

Why CO is dangerous

Carbon monoxide:

  • Has no smell or color — undetectable without equipment
  • Binds to hemoglobin preventing oxygen transport
  • Causes drowsiness, then unconsciousness, then death
  • Symptoms mimic flu or food poisoning — easily confused

Exposure levels:

Concentration (ppm)Effects
50Mild headache after several hours
200Severe headache, dizziness
800Loss of consciousness in 1-2 hours
12,800Death in 1-3 minutes

Where CO comes from in RVs

  • Generator exhaust — most common source
  • Propane appliances when not properly vented (water heater, furnace)
  • Vehicle exhaust (motorhome engine in confined space)
  • Nearby RVs at full hookup sites running generators

Testing

Press the test button monthly. Working detector emits a loud alarm.

Expiration: most CO detectors last 5-10 years. Check expiration date at pickup.

What to do if the alarm sounds

  1. Leave the RV immediately
  2. Get to fresh air
  3. Identify the source — recent generator use, propane leak, etc.
  4. Don’t re-enter until the air is clear
  5. Investigate the cause before resuming
  6. Call rental company roadside assistance if unable to identify source

Highest-risk situations

  • Sleeping with generator running in the RV
  • Generator exhaust near windows or vents
  • Sealed RV with propane appliances running
  • High altitude (CO accumulates faster)
  • Cold weather camping with furnace running

Prevention

  • Never sleep with generator running
  • Verify generator exhaust points away from RV intake
  • Ventilate before sleeping at high altitude
  • Check CO detector before each trip
  • Don’t share-site with rigs running generators

In rental walkthroughs

The rental company should:

  1. Point out CO detector location
  2. Demonstrate test
  3. Confirm expiration date
  4. Explain alarm response

If detector is missing, expired, or non-functional, the rental should be swapped.