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Ryan Huggins - Thousand Oaks, CA - Thousand Oaks, CA
Residential Real Estate and Investment Properties

Hardwired is nice, but you still need a battery backup for when the power goes out.

Apr 20, 2021 08:49 AM
Kathleen Daniels, Probate & Trust Specialist
KD Realty - 408.972.1822 - San Jose, CA
Probate Real Estate

Hard-wired with battery backup.  

The battery only is a PITA when it comes time to change the battery. People say it is easy ... not at 2 am which is the time they are all set to start beeping. 

Apr 20, 2021 08:56 AM
Buzz Mackintosh
Mackintosh REALTORS - Frederick, MD
“Experience, reliable, leadership”

Maryland passed a law in 2018, It requires replacement of any battery-only operated smoke alarm that is more than 10 years old with a unit powered by a 10-year sealed-in battery. It's usually the first thing a home inspector looks for.

Apr 20, 2021 08:08 AM
Greg Large
ERA Real Solutions - Grove City, OH
A Tradition of Trust

my preference is battery operated simply for ease of installation, easy to test, they are reliable and easier to replace, IMHO.

Apr 20, 2021 07:42 AM
Joseph Domino 480-390-6011
HomeSmart - Scottsdale, AZ
Real Estate Made Easy

Most newer buildings will have hard wired. One advantage/disadvantage with hard wired is that when one goes off they all go off. Older properties may only have the option of battery. Regardless they should be changed periodically to ensure functionality.

Apr 20, 2021 07:34 AM
Lyn Sims
Schaumburg, IL
Real Estate Agent Retired

I have both & the newest one is a combo which is better with C02.

In one of my condos I owned I was upset when there was a small kitchen fire & the hard wired detector never worked. Firefighters set it on fire with a lighter & it still didn't go off.  I've never trusted them since.

Apr 20, 2021 07:26 AM
Peter Mohylsky
PMI. Destin - Miramar Beach, FL

I was under the impression that most were hard wired with a battery back up.  I do know that these units do have a shelf life and need more than a battery replacement after a period.  @10 years.  not an expert but I did spend two nights in a Holiday Inn this weekend.  

Apr 20, 2021 08:15 AM
Steve Higgins
RE/MAX Kelowna - Kelowna, BC

Hard wire I feel they are safer and for those that will remove them, forget to test or check them every 6 months. There have been many home fires that had smoke detectors in the home with dead or removed batteries. We have hard wire with battery back up.

Apr 20, 2021 08:58 AM
Candice A. Donofrio
Next Wave RE Investments LLC Bullhead City AZ Commercial RE Broker - Fort Mohave, AZ
928-201-4BHC (4242) call/text

I had to pull out ALL my hardwired smoke detectors and put battery operated ones in . . . when/if I ever sell my house I'll put them back but with the dog, noooooo. they would all take turns freaking out and it was excruciating for her! 

Apr 20, 2021 08:34 AM
Doug Dawes
Keller Williams Realty Evolution - Topsfield, MA - Georgetown, MA
Your Personal Realtor®

I prefer the combo smoke/co units and battery op since now the batteries last 10 years. One pro for hard-wired is if one goes off they all go off.

Apr 20, 2021 07:48 AM
Raymond E. Camp
Ontario, NY
Licensed Real Estate Salesperson Greater Rochester

I have no preference and have hard wired in the house with a newer battery smoke/co2 combo.

At the old cottage, it has two of the newer battery one.

Apr 20, 2021 07:50 AM
Susie Kay
Ultra Real Estate Dallas Fort Worth - Plano, TX
North Dallas Specialist

Mine is hard wired but has a battery as backup.  I have no preference as long as it works. 

Apr 20, 2021 09:50 AM
Nina Hollander, Broker
Coldwell Banker Realty - Charlotte, NC
Your Greater Charlotte Realtor

Mine are hardwired because that's how my house was built. They also use batteries.

Apr 20, 2021 09:33 AM
Chris Ann Cleland
Long and Foster Real Estate - Gainesville, VA
Associate Broker, Bristow, VA

Hard wired are now required by code in our area, so hard wired.

Apr 20, 2021 10:52 AM
Annette Lawrence , Palm Harbor, FL 727-420-4041
ReMax Realtec Group - Palm Harbor, FL
Making FLORIDA Real Estate EZ

Battery. Why?
The comsumer grade detectors become so discolored by the simple degradation of the plastic that replacement is needed about 6 years.
Of course, accordking the the 'HardWired Council of America (HWCA)' more people are injured by uncontrolled decent of a ladder than those hit by a meteor.
So be safe and get it hard wired advises the HWCA.

Apr 20, 2021 10:02 AM
Margaret Rome Baltimore 410-530-2400
HomeRome Realty 410-530-2400 - Pikesville, MD
Sell Your Home With Margaret Rome

Maryland has a law since 2018 alarm battery-powered or hard-wired may be older than 10 years from the date of manufacture and if it's a battery, it must be sealed and tamper-resistant. 

Apr 20, 2021 08:20 PM
Anna Banana Kruchten CRS, Phoenix Broker
HomeSmart Real Estate BR030809000 - Phoenix, AZ

Our system in hardwired and it works great.  I rarely see battery operated fire detectors in homes.

Apr 20, 2021 03:48 PM
Don Baker
Lane Realty - Eatonton, GA
Lake Sinclair Specialist

we have both.  

Apr 20, 2021 02:55 PM
Ron and Alexandra Seigel
Napa Consultants - Carpinteria, CA
Luxury Real Estate Branding, Marketing & Strategy



Apr 20, 2021 12:22 PM
Jerrill Ewing
N & J Lake Properties, LLC - Eatonton, GA

hard wired because they communicate and if I have a fire in the basement I'm alerted all over the house

Apr 20, 2021 11:52 AM
Jeff Pearl
RE/MAX Distinctive / LIC in VA - Lovettsville, VA
Full Service Full Time Realtor

Hardwire with battery back up is common.

Apr 21, 2021 03:54 PM
Bob Crane
Woodland Management Service / Woodland Real Estate, KW Diversified - Stevens Point, WI
Forestland Experts! 715-204-9671

I wish they would get away from those overpriced 9v batteries.

In new construction it may be best to hird wire them, for old homes though this may be more difficult.

Apr 21, 2021 05:26 AM
Wayne Martin
Wayne M Martin - Chicago, IL
Real Estate Broker - Retired

Hard wired with battery back-up is the way to go! 

Apr 21, 2021 04:20 AM
J.R. Schloemer, CRS
Kentucky Select Properties - Louisville, KY

Hard-wired with a backup battery. I just feel more secure with a stable source of energy, and an alterntive source if anything goes wrong. Since newer building codes call for it, I suppose that is the direction things are going.

Apr 20, 2021 09:57 PM
Kat Palmiotti
406-270-3667,, Broker/REALTOR® - Kalispell, MT
Helping your Montana dreams take root

I would prefer battery so if they go off when cooking the battery can be temporarily be removed. 

Apr 20, 2021 06:21 PM