carbon monoxide

First Alert 2-in-1 Smoke and Carbon Monoxide Alarm – Costco Sale!

by Rhonda October 28, 2023

The First Alert 2-in-1 Smoke and Carbon Monoxide Alarm from Costco has a slim, easy-to-install design with no batteries to replace. It has a…

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Costco Sale: Nest Protect Smoke and CO Alarm 2-Pk $179.99

by Rhonda July 16, 2020

7/24/18. Just burned the toast? App Silence lets you quiet the alarm from you phone. Select Costco locations have the Nest Protect Smoke and Carbon Monoxide Alarm 2-Pack on sale for …

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Costco Sale – First Alert 10-Year Carbon Monoxide Alarm $19.99

by Rhonda July 24, 2020

*UPDATE* 1/28/20. There can be many potential sources of carbon monoxide in the home: blocked chimney, furnace, attached garage, range hood, clothes dryer, portable heater, water heater, fireplace and indoor …

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Costco Deal: First Alert CO614B Plug-in Carbon Monoxide Alarm with Digital Display $22.99

by Rhonda July 27, 2020

*UPDATE* 2/11/14. Costco has the First Alert Carbon Monoxide Alarm on sale for $22.99 (after manufacturer’s instant rebate), now through February 23, 2014. That is $7.00 off Costco’s regular price …

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