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Light and air unit

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Title: Light and air unit  
Author: World Heritage Encyclopedia
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Subject: Infobox fire department, Infobox fire department/doc, Clark County Fire Department (Nevada), San Luis Obispo County Fire Department, Alexandria Fire Department
Collection: Fire Service Vehicles
Publisher: World Heritage Encyclopedia

Light and air unit

Santa Monica Fire Department Light and Air 1.
The SCBA bottle filler on the back of SMFD Light and Air 1.

A light and air unit, also known as a breathing support unit, is a specialized piece of firefighting apparatus used by firefighters to provide supplemental lighting and SCBA air bottles at the scene of an emergency.[1] During prolonged emergencies, particularly structure fires, where firefighters must remain on air (wearing their SCBAs), these air bottles will need to be replaced and refilled.[2] The light and air unit has the ability to refill the SCBA bottles while in the field using onboard air compressors.[1] It also carries a supply of spare air cylinders. These units are highly customizable and can vary greatly between departments.[3] These multifunctional units are also equipped with diesel generators which supplies electricity to power portable lights and overall scene illumination.[4] This is usually done via a roof mounted telescoping light bank. The unit also has the ability to supply electrical power in an emergency to a shelter, base camp, or medical facility.

In the United States, Chapter 24 of National Fire Protection Association regulation 1901 outlines specifications for any air system mounted on firefighting apparatus.[5]


  1. ^ a b "Light Air 1" (PDF). Santa Barbara County Fire. Retrieved 25 March 2015. 
  2. ^ "Apparatus". Los Angeles Fire Department. Retrieved 25 March 2015. 
  3. ^ "Air & Light Unit".  
  4. ^ Peters, William (9 January 2012). "Apparatus Purchasing: Back to Basics".  
  5. ^ "24 - Air Systems", Standard for Automated Fire Apparatus ( 
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