Here is everything you need before you order CarbonOne Safe: prices, pack sizes, shipping and the guarantee. These are the prices the official checkout showed in October 2026. Prices can change, so check the checkout before you pay.
CarbonOne Safe is sold online by Onninest. Support is on 1-888-814-2188 or [email protected], Monday to Friday.
Most homes need 2 to 4 units, and the price per unit drops as you buy more.
| Pack | Total | Price per unit |
|---|---|---|
| 1 unit | $69.00 | $69.00 |
| 2 units | $124.20 | $62.10 |
| 3 units (most popular) | $165.60 | $55.20 |
| 4 units | $193.20 | $48.30 |
| 5 units | $207.00 | $41.40 |
Go to the CarbonOne Safe checkout
Shipping is free. Orders are sent within about 2 business days and usually arrive in 3 to 7 business days. CarbonOne Safe ships to the US, Canada, the UK, Australia and New Zealand.
The checkout may offer extras such as insured shipping with a lifetime warranty, an extra unit or a rewards membership. They are all optional, so choose only what you want, and check your total before you pay.
CarbonOne Safe comes with a 90-day guarantee from the day it is delivered. Under the seller's terms:
Learn more: how CarbonOne Safe works, carbon monoxide safety tips and where to place CO detectors.
See today's CarbonOne Safe price
In October 2026 the official checkout listed $69 for one unit and less per unit in packs, down to $41.40 each in a 5-pack.
Yes. Shipping is free, and orders usually arrive in 3 to 7 business days.
90 days from delivery. Unused units in the original packaging get a full refund; used units are refunded less a 15% restocking fee.