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How Many Smoke Detectors Do I Need?

Do you know how many smoke detectors you need for your commercial building? The answer may surprise you. Our team is dedicated to keeping you safe with the best fire protection system.

While we don’t like to think about what we’d do during an emergency, a fire alarm gives you more time to safely evacuate a building in the event of a fire. Keep reading to learn how many smoke detectors you need to stay safe.

How many smoke detectors should I install?

For commercial buildings, you will need to install a code-compliant fire protection system.

Smoke alarms should be installed:

  • Inside office rooms
  • In hallways
  • On every floor

When should I replace smoke detectors?

It’s not enough to replace smoke alarm batteries once a year. According to the U.S. Fire Administration, the smoke alarm itself needs to be replaced every 8 to 10 years. Smoke detectors have delicate components that allow them to detect smoke. However, these internal components eventually wear out over time.

Our team can help steer you toward the best smoke alarms for your home or commercial building. We also offer fire alarm installation. If you have recently installed smoke detectors in your home, it helps to write the date of purchase inside the alarm with a permanent marker.

Do I need wireless smoke detectors?

Ask fire protection companies about installing linked or wireless smoke detectors. Wireless smoke detectors use radio frequency to communicate with each other. This means that if one alarm goes off, they’ll all go off. Unlike wired smoke detectors, you don’t have to deal with the cost and hassle of rewiring your commercial building.

Wireless smoke detectors also give you more time to evacuate. In the past, more furniture was made with natural fibers that took longer to burn. However, today’s furniture is mostly made with synthetic fibers that catch fire more quickly.

We believe in hoping for the best, but preparing for the worst. This means making sure your commercial building is protected by a quality fire alarm system. A fire protection contractor will be able to install and test smoke detectors so you’ll be prepared in the event of a fire. You’ll feel more peace of mind knowing that your alarm system prevents significant fire damage and saves lives.

Our team will be able to help you find the best smoke detectors for your commercial building.

To schedule a service visit, or learn more about our fire protection services, call Fire Pros at 800-968-2871.

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Local Reviews

Fire Pros, LLC Rated 4.9 out of 5 stars based on 3670 customer reviews

Map of Ann Arbor, MI

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Respectful and kind


Map of Troy, MI

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Map of Ann Arbor, MI

Another Portion of our Required Inspections




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Staff was on time and friendly. Performed the work without incident and communicated well when they were finished.


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Professional and knowledgeable


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Professional and efficient.


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Map of Livonia, MI

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Building Manager




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An excellent tech


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Great Service, great technician




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Very good experience over the years.




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Brandon Foote is very kind, patient, friendly and knowledgeable


Jared was very informative and updated me on all that needed to be done




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The technicians who came out, were very friendly, knowledgeable and helpful!


Dave was prompt in getting the inspection completed and docs over to me




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i rec'd a call from Dave informing me the inspection was completed. He gave me a quick run down of the deficiencies. He had the inspection report in my emails before I could complete my notes on the file


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Ron and Dennis were great as usual. Any problems they faced they overcame with professionalism. They did a great job.


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Mike R.

Mike R.

NAC 1 BOOSTER PANEL BY FACP: Batteries in NAC 1 panel are due for replacement due to age. They are (2) 12V 7AH batteries. - repair

Near W Grand River Ave, Williamston, MI 48895
Mark S.

Mark S.

Near Dobry Dr, Sterling Heights, MI 48314
William S.

William S.

Wet: Perform a 5-year internal assessment of system piping that is due. If an obstruction is present, this can render the sprinkler system not properly operate in the case of a fire. NFPA 25 (14.2.1.1) An assessment of the internal condition of piping shall be conducted at a minimum of every 5 years or in accordance with 14.2.1.2 to inspect for the presence of foreign organic and inorganic material. Wet: Perform a 5-year internal inspection of the Fire Department Connection (FDC) check valve. Check is in the basement, next to the bathroom, up in the floor joist. NFPA 25 (13.4.2.1) Check valves shall be inspected internally every 5 years to verify that all components operate correctly, move freely, and are in good condition. Wet: Add the missing spare sprinkler heads in the spare headbox. NFPA 25 (5.4.1.5.4) The stock of spare sprinklers shall include all types and ratings installed and shall be as follows; Facilities having 300-1000 sprinklers – minimum of 12 spare sprinklers

Near Front Ave NW, Grand Rapids, MI 49504
Tyler H.

Tyler H.

Mike Price just called- said the panel has been beeping since we left.

Near Danvers Ct SE, Kentwood, MI 49512
Mike R.

Mike R.

Heat Detectors above Reception Desk and in Directors office are not tied into system and require removal or repair. Areas are currently covered by smoke detectors. - repair Heat Detectors throughout (4) require replacement due to age/condition. Detectors reflect Manf Dates from 1983 to 1999 4 - System Sensor 135 degree fixed / ROR detectors - repair Phone line 1 has voltage, no dial. Phone line 2 has heavy static on line. Phone lines are in disrepair and have been a continuing issue per the Director. Recommend installation of Cellular Communicator at location. - repair This quote is for the repairs and to add cellular communication to the fire alarm panel .

Near N Lilley Rd, Canton, MI 48187
David H.

David H.

Near Thomas Rd, Ann Arbor, MI 48108
Alex H.

Alex H.

Near Dequindre Rd, Madison Heights, MI 48071
Art L.

Art L.

Portable Extinguishers Inspection

Near E Paris Ave SE, Grand Rapids, MI 49546
Tyler H.

Tyler H.

Annual Fire Alarm Inspection Edwards fire alarm panel, 3 booster panels, 15 initiating devices, 25 indicating devices

Near Brown St SE, Grand Rapids, MI 49507
Robert G.

Robert G.

Near Smith Rd, Fowlerville, MI 48836
Jared J.

Jared J.

Portable Extinguishers and Fire Hose Inspection

Near Farmington Rd, Farmington Hills, MI 48334
George S.

George S.

Near E Scripps Rd, Orion charter Township, MI 48360
Brandon  F.

Brandon F.

Completed puff test and relocated pull station per fire Marshall request.

Near E Grand River Rd, East Lansing, MI 48823
William S.

William S.

Wet Stairwell next to Community Room B Riser: Remove and replace the outdated gauge. NFPA 25 (13.2.7.2) Gauges shall be replaced every 5 years Wet Stairwell next to Community Room B Riser: Perform a 5-year internal assessment of system piping that is due. If an obstruction is present, this can render the sprinkler system not properly operate in the case of a fire (8' ladder needed). NFPA 25 (14.2.1.1) An assessment of the internal condition of piping shall be conducted at a minimum of every 5 years or in accordance with 14.2.1.2 to inspect for the presence of foreign organic and inorganic material. Wet Stairwell next to Community Room B Riser: Perform a 5-year internal inspection of the Fire Department Connection (FDC) check valve. NFPA 25 (13.4.2.1) Check valves shall be inspected internally every 5 years to verify that all components operate correctly, move freely, and are in good condition.

Near Jupiter Ave NE, Plainfield charter Township, MI 49306
Art L.

Art L.

Industrial/Dry Chemical Suppression Repair

Near 29th St SE, Grand Rapids, MI 49512
Sean W.

Sean W.

Near Health Dr SW, Wyoming, MI 49519
John  R.

John R.

Near Wiersma St NE, Cedar Springs, MI 49319
Art L.

Art L.

Portable Extinguishers Inspection

Near W Main St, Lowell, MI 49331
Mark S.

Mark S.

Near N Dawson St, Sandusky, MI 48471
George S.

George S.

Near Giddings Rd, Orion charter Township, MI 48359
David H.

David H.

Near Washtenaw Ave, Ann Arbor, MI 48104
Art L.

Art L.

Emergency / Exit Lights and Portable Extinguishers Inspection

Near 44th St SE, Kentwood, MI 49512
John  R.

John R.

Near Griswold St, Hart, MI 49420
Sean W.

Sean W.

Near Central Blvd, Hudsonville, MI 49426
Mark S.

Mark S.

Near N Dawson St, Sandusky, MI 48471