Where Is The Best Mounting Location For CO2 And Propane Sensors In An RV?
Updated 05/22/2026 | Published 05/20/2026
Question:
My research shows that CO2 sensors should be mounted high in the room and propane sensors mounted low for detection. Wouldnt i be better served to buy two separate sensors placed as recommended?
asked by: David
Expert Reply:
Hey David, thanks for reaching out. You aren't wrong. From a pure detection standpoint, separate dedicated sensors mounted at their ideal heights is technically the best setup. Propane is heavier than air, so LP detectors belong low near the floor, while CO and smoke tend to mix and rise with warm air circulation, which is why CO/smoke alarms are usually mounted higher. So, your thinking is correct there.
The reason combo RV detectors like part # RS54FR exist is mainly convenience, wiring simplicity, and RV code compliance, not because it’s the absolute perfect sensing location for every gas. In the real world, modern combo RV alarms still work pretty well because air inside an RV circulates constantly from furnaces, AC units, fans, and normal movement. But if you really want the best possible coverage, a dedicated propane detector low and a separate CO/smoke detector higher up is definitely the better setup.
Product Page this Question was Asked From
RV Propane Gas and Carbon Monoxide Detector - 12 Volt - 2 Wire - Black
- RV Gas Detectors
- Carbon Monoxide and Propane
- Alarm
- Black
- RV Safe
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