1-800-968-2871
COMPREHENSIVE FIRE PROTECTION SERVICES IN THE MIDWEST

24-Hour Emergency Service

1-800-968-2871
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Let us know how we can help you and a Fire Pros representative will contact you within 24 hours.

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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and a Fire Pros representative
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Local Reviews

Fire Pros Inc Rated 4.9 out of 5 stars based on 2414 customer reviews

Map of Holland, MI

Carlton




Review of Fire Pros Inc

Did great job


Map of Portage, MI

great




Review of Fire Pros Inc

He was great, early for the appointment and did a nice job.


Map of Holland, MI

Friendly and courteous




Review of Fire Pros Inc

Great service from a very friendly and very knowledgeable person. The visit went very smooth and quickly.


Map of Grand Rapids, MI

Service was great




Review of Fire Pros Inc


Map of Petoskey, MI

Very pleasant tech




Review of Fire Pros Inc


Map of Fort Gratiot Township, MI

Quality Work




Review of Fire Pros Inc


Map of Sault Ste. Marie, MI

wish the billing was done on site.




Review of Fire Pros Inc

wish the billing was done on site. other than that it was good service.


Map of Norton Shores, MI

Always professional and helpful




Review of Fire Pros Inc


Map of Ann Arbor, MI

great service




Review of Fire Pros Inc


Map of Ann Arbor, MI

Great service




Review of Fire Pros Inc

The Guys were very professional and informative taking me step by step of the operation of our system ! Thank you William Schiller Chief of maintenance


Great service




Review of Fire Pros Inc

They were on time and did a great job.


Monthly Extinguisher and Valve Inspectoin




Review of Fire Pros Inc

On time and professional. Always answers questions and follows up.


After much troubleshooting, the problem has been diagnosed.




Review of Fire Pros Inc

Thanks to Jason for troubleshooting while patiently working around students and staff.


Great Service!!




Review of Fire Pros Inc


amazing service! great customer service!!




Review of Fire Pros Inc


He did a very good job today!




Review of Fire Pros Inc

He replaced all the things that needed to be replaced.


Great servie and friendly staff




Review of Fire Pros Inc


Good Service, Proffesional with great humor and attitudes




Review of Fire Pros Inc

good experience no complaints. as to the below question on cost, I don't have an invoice so therefore I can answer that one.


Excellent service




Review of Fire Pros Inc

Very professional. Excellent service. Thank you.


Great Service




Review of Fire Pros Inc


Gerald R.

Gerald R.

Near 7350 Kensington Road, Brighton, MI 48116
John H.

John H.

Portable Extinguishers Inspection

Near US-31, Petoskey, MI 49770
Gary B.

Gary B.

***MUST HAVE PO ON JOB*** Monthly Fire Extinguisher Inspection - 150 units Portable Extinguishers Inspection

Near Hagen Dr SE, Grand Rapids, MI 49548
David H.

David H.

Alarm Systems Inspection

Near Charlevoix Ave, Petoskey, MI 49770
David H.

David H.

Near Camelot Ridge Ct SE, Grand Rapids, MI 49546
Sean W.

Sean W.

Near 112th Ave, Holland, MI 49424
Jason  Z.

Jason Z.

Special Hazards Inspection

Near Silver Creek Rd, Whitehall, MI 49461
John H.

John H.

Portable Extinguishers Inspection

Near Fochtman Industrial Dr, Petoskey, MI 49770
Sean W.

Sean W.

Near Country Club Rd, Holland, MI 49423
Tyler H.

Tyler H.

Rich 269-584-0042 smoke detectors in hallways are going off randomly causing the alarm to go off

Near Gull Run Dr, Kalamazoo, MI 49048
David H.

David H.

Near Chicago Dr, Zeeland, MI 49464
Art L.

Art L.

Portable Extinguishers, Emergency / Exit Lights, and Kitchen Suppression Inspection

Near Van Raalte Ave, Holland, MI 49423
Tyler H.

Tyler H.

Annual Fire Alarm Inspection

Near S Westnedge Ave, Portage, MI 49002
Alex R.

Alex R.

Completed annual Fire Extinguisher inspection for 2019

Near S Lapeer Rd, Metamora, MI 48455
Ron  R.

Ron R.

Near W Shore Dr, Holland, MI 49424
Gary B.

Gary B.

Quarterly Fire Sprinkler Inspection (1 wet) Sprinkler Inspection

Near 14th Ave, Hudsonville, MI 49426
Sean W.

Sean W.

Near W 40th St, Holland, MI 49423
John H.

John H.

Portable Extinguishers Inspection

Near Standish Ave, Petoskey, MI 49770
Sean W.

Sean W.

Near Van Raalte Ave, Holland, MI 49423
Mike R.

Mike R.

Inoperable Deficiency: Duct detector above ceiling by dry goods storage is stuck in alarm and can not be reset. This is a very old system sensor duct detector. I cleaned components of detector and it still will not reset. Nikki said it has been an ongoing issue and when she turned heat on this morning it went into alarm. This detector is local and has NO remote test switch the detector triggers 1 horn strobe on drop ceiling below it and also shuts down the HEAT/AC unit. Upon arrival the AC was not working and horn strobe was covered to muffle the sound. Per Nikki (manager) I removed and wire nutted shut down wires so they can use the RTU for heat or ac until detector is replaced. We can replace unit with a System Sensor 4120D.

Near Plainfield Ave NE, Grand Rapids, MI 49525
Matt S.

Matt S.

Portable Extinguishers Inspection

Near Mt Hope Rd S, Carson City, MI 48811
Matt S.

Matt S.

Portable Extinguishers, Industrial/Dry Chemical Suppression, and Emergency / Exit Lights Inspection

Near Industrial Park Dr, Greenville, MI 48838
Alex R.

Alex R.

Completed annual Fire Alarm inspection September for 2019

Near Marketplace Blvd, New Baltimore, MI 48051
Ron  R.

Ron R.

Near Sheldon Rd, Grand Haven, MI 49417
John H.

John H.

Portable Extinguisher Inspection

Near St Louis Club Rd, Petoskey, MI 49770