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1-800-968-2871
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How do fire sprinkler systems work?

Most sprinkler heads contain a small bulb with a colored liquid inside. This bulb acts as a plug to prevent water from escaping out of the sprinkler. The heat from a fire causes this liquid to quickly expand. Once the pressure in the vial gets too high, the bulb bursts and releases the water behind it.

The liquid inside the bulbs comes in a variety of colors, and each color represents the temperature required to activate the sprinkler:

  • Orange – 135°F
  • Red – 155°F
  • Yellow – 174°F
  • Green – 200°F
  • Blue – 286°F
  • Purple – 360°F
  • Black – 440°F

Since the fire sprinklers are activated by heat, there is no risk of accidental activation of your fire sprinkler system by smoke or dust in the air. That said, the bulbs are very fragile and any tampering could cause them to go off. If a sprinkler head gets accidentally knocked off (by a forklift, truck, repairman, etc.), there’s going to be lots and lots of water flowing through that sprinkler head until the system is shut down.

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Local Reviews

Fire Pros, LLC Rated 4.9 out of 5 stars based on 3186 customer reviews

Map of Mackinac Island, MI

Great Service




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Map of Farmington, MI

Collection Manager




Review of Fire Pros, LLC

Very professional


Map of Logansport, IN

GM




Review of Fire Pros, LLC

Great job!


Map of Detroit, MI

Wonderful Service




Review of Fire Pros, LLC

Alex is attentive to detail and advises me of any issues that he incurs.


Map of Lowell, MI

Great service! Knowledgeable sevice tech!




Review of Fire Pros, LLC

Very professional and knowledgeable tech. Quick install and good price.


Map of Southfield, MI

Great Service




Review of Fire Pros, LLC

Jared on time during the service process he explains what he is doing to educate you that’s a great quality to have. I would rate him A+.


Map of Sault Ste. Marie, MI

He was very helpful, informative and friendly.




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Map of Grand Rapids, MI

Fantastic Service




Review of Fire Pros, LLC

A great experience and a exceptional crew! I appreciate the quick response and tech’s who came prepared to the job.


Map of Howell, MI

Great Service, great technician




Review of Fire Pros, LLC

TJ is very professional, I personally enjoy working with and having him do repairs for my company!!!!!!!!!!


Map of Hastings, MI

Awesome Service




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Great service, highly knowledgeable!




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Very Polite and Curtious




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Well done once again.




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Great


sprinkler inspection




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inspection




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Owner




Review of Fire Pros, LLC

Great Job! Efficient professional and friendly


Knowledgeable and friendly




Review of Fire Pros, LLC

Did great work. Was friendly, knew what he was doing and performed work quickly.


Excellent and efficient service




Review of Fire Pros, LLC

John is a complete professional. Conducts his work in an efficient manner.


Seemed informative, fair.




Review of Fire Pros, LLC

I had a good opinion of what I saw., The people showed up on time as planned, were business like, very cordial, and got right to the job at hand both times. The questions I asked got satisfactory answers, The whole experience was a good one.


Quarterly Supression System Inspection




Review of Fire Pros, LLC

Gary is on time, professional and thorough. Never any issues.


Jim S.

Jim S.

9/25 - Scheduled with Maria.  mh Perform required six-year maintenance on (1) 10lb. ABC fire extinguisher, replace (1) out of date 10lb. ABC fire extinguisher with new and replace (4) dead 6V5A batteries with new. A total of (9) emergency lights will require an electrician. Notice of Non Compliance and Repair Proposal Fire Systems of Michigan recently inspected the fire extinguishers at your establishment in accordance with applicable state statutes, local fire codes and NFPA guidelines. While inspecting your extinguishers, they were determined to be "Non-Compliant" per local fire codes. The attached proposal summarizes the non-compliance issues that were found during the inspection and the costs and actions needed to correct them. Please contact me as soon as possible to review the attached proposal and schedule the repair to your fire extinguishers. I look forward to working with you to bring your extinguishers into compliance. To discuss this proposal, please contact: Randy Pattee.

Near Briarwood Cir, Ann Arbor, MI 48108
George S.

George S.

Near N Saginaw St, Pontiac, MI 48342
Ron  R.

Ron R.

Near 17 Mile Rd NE, Cedar Springs, MI 49319
Alex R.

Alex R.

Completed Annual smoke alarm inspection for 2020

Near Beech Daly, Dearborn Heights, MI 48127
Jim S.

Jim S.

9/29 Confirmed with Alex, Asst mgr. km Annual Extinguisher Inspection FireSoft Due Date: 09/20/2019 Annual Emergency/Exit Light Inspection Inoperable Deficiency: 6v-4a battery in emergency light in hallway needs to be replaced. Inoperable Deficiency: 1- 6v-4a emergency light battery replaced in emergency light in hall. Portable Extinguishers and Emergency / Exit Lights Inspection

Near Jackson Rd, Ann Arbor, MI 48103
Alex R.

Alex R.

Completed Annual Fire Extinguisher Inspection for 2020

Near Beech Daly, Dearborn Heights, MI 48127
Robert G.

Robert G.

Near Cleary Dr, Howell, MI 48843
John H.

John H.

Kitchen Suppression Service Call

Near E Central Ave, Mackinaw City, MI 49701
George S.

George S.

Near N Saginaw St, Pontiac, MI 48342
David H.

David H.

Near Logistic Dr, Zeeland, MI 49464
Terrence  J.

Terrence J.

Near Joy Rd, Westland, MI 48185
Austin C.

Austin C.

Near Riley St, Holland, MI 49424
Robert G.

Robert G.

Near Cleary Dr, Howell, MI 48843
Ron  R.

Ron R.

Near 36th St, Grandville, MI 49418
David H.

David H.

Near Chicago Dr, Zeeland, MI 49464
Gary B.

Gary B.

FIRE EXTINGUISHERS: Service to provide (3) New 10#ABC Fire Extinguishers. We will also provide Standard Wall Mounting Brackets & Vinyl Arrow Location Signs for the (3) Fire Extinguishers. (Extinguisher Cabinets have been excluded) NOTE: This service includes delivery of all the Fire Extinguisher Equipment previously stated. With that, the first year of annual Certification of the Fire Extinguishers will also be included. Installation of this equipment to be provided by others. Portable Extinguishers Service Call

Near Holton Rd, Muskegon, MI 49445
Alex R.

Alex R.

Completed Annual Fire Alarm Inspection for 2020

Near Clipper St, Plymouth, MI 48170
Robert G.

Robert G.

Near Cleary Dr, Howell, MI 48843
Robert W.

Robert W.

Near Woodward Ave, Ferndale, MI 48220
John H.

John H.

Portable Extinguishers and Kitchen Suppression Inspection

Near N Nicolet St, Cheboygan, MI 49721
Gary B.

Gary B.

Semi-Annual Kitchen Hood Fire Suppression System Inspection (RG 6gl.) Kitchen Suppression Inspection

Near Harvey St, Muskegon, MI 49444
Robert G.

Robert G.

Near Cleary Dr, Howell, MI 48843
Robert G.

Robert G.

Near Cleary Dr, Howell, MI 48843
Robert G.

Robert G.

Near Cleary Dr, Howell, MI 48843
Art L.

Art L.

Portable Extinguishers Inspection

Near W 22nd St, Holland, MI 49423