Kidde 21026065 Smoke & Carbon Monoxide Alarm

Last updated date: November 23, 2020

DWYM Score

9.1

Kidde 21026065 Smoke & Carbon Monoxide Alarm

Why Trust DWYM?

DWYM is your trusted product review source. Along with our in-house experts, our team analyzes thousands of product reviews from the most trusted websites. We then create one easy-to-understand review. Learn more.

Don't Waste Your Money Seal of Approval
Look for the DWYM seal for products that are the best in the category.
Show Contents

We looked at the top Carbon Monoxide Alarms and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Carbon Monoxide Alarm you should buy.

Update as April 29, 2021:
Checkout The Best Carbon Monoxide Alarm for a detailed review of all the top carbon monoxide alarms.

Overall Take


In our analysis, the Kidde Kidde 21026065 Smoke & Carbon Monoxide Alarm placed 6th when we looked at the top 10 products in the category. For the full ranking, see below.

From The Manufacturer

The Kidde P3010CU is a 10-year, sealed battery, smoke and carbon monoxide alarm with a voice warning system that features photoelectric and electrochemical sensing technology with Smart Hush feature. This combination alarm combines the detection capabilities of a photoelectric sensor with that of an electrochemical sensor, which is used to detect CO. When either sensor notices a potential hazard, it will communicate with the other. Depending on what is detected, the alarm will adjust its smoke sensitivity in order to better discriminate between a real hazard and a false one. This constant communication enhances the alarm’s overall performance and significantly reduces the potential for a nuisance alarm. The voice warning system announces “Fire”, or “Warning, Carbon Monoxide” to help eliminate any confusion and clearly warn you and your family of a smoke or carbon monoxide danger. The sealed in lithium battery will power the unit for the entirety of its 10 year life, eliminating the need for battery replacement and worry about unauthorized battery removal. The alarm provides continuous protection from smoke and carbon monoxide, even during power outages. The alarm will automatically activate when it is attached to the mounting bracket; there are no pull-tabs, no switches, everything is automatic. At the end of alarm life, the unit will chirp, indicating the alarm is in need of replacement. The customer can use a simple tool such as a screwdriver to deactivate the unit, stopping the chirp and making it safe for disposal.

An Overview On Carbon Monoxide Alarms

Carbon monoxide is a silent danger that can lurk in any home. It can cause serious health problems and even death.

Unfortunately, carbon monoxide is both colorless and odorless, making it impossible to detect on your own. Carbon monoxide can be released by malfunctioning appliances. When this happens in a closed, unventilated space like a house, carbon monoxide can gradually build up so much that it becomes harmful.

The best way to detect the presence of carbon monoxide in an enclosed space is with the use of a carbon monoxide detector. There are three types of detectors: biomimetic, which uses a gel that changes color in the presence of CO; metal oxide semiconductor, which uses a silica chip; and electrochemical, which has electrodes in a chemical solution that sense changes in electrical currents due to elevated CO levels.

But you need a device that does more than detect the presence of carbon monoxide. It also needs to set off an alert when levels reach a certain threshold. The type of alert can be voice-based or as a beep, but whatever you choose, make sure you won’t miss it if the alarm does go off.

The Carbon Monoxide Alarm Buying Guide

  • Some carbon monoxide detectors are also smoke detectors to give your home full protection. However, if you go this route, make sure you’re getting the best of each of those devices in one. Otherwise, you’ll be better off investing in separate smoke and carbon monoxide detectors.
  • For best results, place your detector close to the area where you sleep so that it will wake you up if it goes off while you’re sleeping. It should be about five feet from the floor. If your home has multiple stories, you need one for each story.
  • Infrared photoelectric sensor-based detectors tend to do a better job without false alarms than the type that uses a gel or silica chip.
  • It’s important to consider how your detector is powered. Some will plug into a power outlet, while others use a battery. Battery-powered detectors can fail if the battery goes bad, but they also will continue to work during power outages.
  • How you’re alerted is important. Most alarms use a tone like a beep, although some are voice-based.
  • It can also be nice to be able to check the current CO levels with the press of a button. Some detectors let you see the peak carbon monoxide levels within a recent timeframe. This will help you not just see what current levels are, but whether they’ve increased to dangerous levels in recent days or weeks.­