Carbon monoxide poisoning in a hotel: who is responsible, and what to do next.

The short answer

How it happens

Most hotel incidents trace back to fuel-burning equipment placed close to guest rooms: pool and spa heaters, water heaters, boilers and laundry equipment. A cracked heat exchanger, a blocked vent or a disconnected flue can push exhaust into rooms above or beside it, often at night, when guests are asleep.

Vacation rentals add their own risks: older furnaces, gas fireplaces, attached garages and generators run during power cuts. Detector requirements for lodging differ from state to state, and some properties have none in the rooms at all.

Guests don’t choose the heater, the vent or the inspection schedule. That is why the duty sits with those who do.

Who may be liable

Responsibility depends on the facts. These are the parties most often examined.

What to keep

Evidence decides these cases. As soon as you are safe and have been seen by a doctor:

• Medical records, including any carboxyhemoglobin (COHb) blood test and when it was taken.
• The 911 call and fire department report, with the carbon monoxide readings they recorded.
• Your booking, room number and receipts, and the names of staff you spoke to.
• Photos and video of the room, any alarm, vents and nearby equipment rooms.
• A symptom diary: when symptoms started, eased and returned.

Symptoms to watch

Headache, dizziness, nausea, confusion and tiredness are the most common early signs, and they are easy to mistake for travel fatigue or food poisoning. A strong clue is when several people in the same room, or the same floor, feel unwell at once. Problems with memory, concentration or mood can appear weeks later.

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