Replacing a hardwired smoke alarm is a piece of cake. Learn how from a veteran home inspector in this story. Show Replacing a hardwired smoke alarm is a piece of cake. If you purchase a smoke alarm from the same manufacturer, you might be able to use the same wiring harness. You simply disconnect the existing smoke alarm and pop in the new one. You can do this, too. To be safe, turn the power off first, of course. If you can’t find the same unit, consider purchasing a wiring adapter, which converts the wiring harness from one manufacturer to another. With an adapter, there’s no wiring that needs to be done. You just pop the old harness out of your smoke alarm and plug it into the adapter. From there, you plug the adapter into your new smoke alarm. It’s just like I showed in the clip above. You’ll probably need to replace the mounting ring, which consists of two simple screws. It’s about as easy as replacing a cover plate on a light switch. Anyone can do this. Doing the Actual WiringThe most difficult way to replace a hard-wired smoke alarm is to actually re-do the wiring. Even then, however, it’s not difficult. It’s a matter of simply swapping out the wiring harness. The steps are pretty simple:
Here’s a video with the boring parts sped up to show what these steps look like: Disclaimer: as with all electrical work, don’t do anything that you’re not qualified to do. Don’t take this as a complete electrical how-to guide, either. This is just an overview. The installation instructions from the manufacturer are a heck of a lot longer than this and are packed with disclaimers. You should read and follow all of those instructions, because more steps will surely be required, depending on the specific unit. About the author:Reuben Saltzman is the president and owner of Structure Tech Home Inspections Popular Videosⓘ Download Article Download Article Functioning smoke detectors are extremely important in maintaining the safety of your home. Smoke detectors need to be replaced every 10 years, and smoke detector batteries should be replaced every 6 months.[1] You may need to replace your smoke detector The process takes just a few minutes and only requires a screwdriver and some electric tape.
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Ask a Question 200 characters left Include your email address to get a message when this question is answered. Submit Advertisement ReferencesAbout This ArticleArticle SummaryX Before you replace a smoke detector, you should switch off the circuit breaker for the smoke detectors to avoid electrocuting yourself. To remove your old smoke detector, twist it counterclockwise and disconnect its wires by squeezing the plastic plug. Then, you’ll need to unscrew the mounting plate and disconnect the wires from it. Screw your new mounting plate in its place and attach the new smoke detector. Give your smoke detector a quick test and you’re good to go! For more tips from our Electrical co-author, including how to work out if your smoke detectors need replacing, read on! Did this summary help you? Thanks to all authors for creating a page that has been read 207,861 times. Reader Success Stories
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