The news, with expert context.

“Is this a safe distance?” A generator photo sparks urgent warnings over carbon monoxide

After several days without electricity, one homeowner asked online whether their portable generator was far enough from the house. The answers quickly turned to carbon monoxide.

Rob’s view — at least 20 feet from the house, never in a garage, exhaust pointing away from doors and windows. Make sure the generator is serviceable, and if it is rented, make sure it has a safety tag.

How often should you test, replace and maintain a carbon monoxide detector?

Rob’s view — test monthly, and replace on the date printed on the alarm. If there is no date printed on the alarm, write the date on it with a permanent marker. The alarm will last the life of its battery: when it starts beeping (between 5 and 7 years), it’s time to replace it. CO alarms are not expensive, but will potentially save your life for the cost of just a few cents a month.

Five treated for carbon monoxide poisoning at a DC parking garage

Rob’s view — enclosed garages need ventilation and CO monitoring that actually works.

Carbon monoxide: the invisible threat

Rob’s view — the alarm is the only warning you will get. But you can protect yourself by making sure that your appliances are serviced and in good condition.

Carbon monoxide risks increase in cold weather

Rob’s view — service the heating before the first cold night, not after.