What PSI should you aim to refill your bottle to at the start of the day?

Refilling your SCBA bottle to 4000 PSI at the start of the day is important because it maximizes the available air supply for the duration of your operations. The high-pressure fill ensures that you have a sufficient amount of breathable air, which is crucial for safety in hazardous environments.

SCBA bottles are typically rated for a pressure of 4500 PSI when fully filled, and starting your day at 4000 PSI provides a substantial reserve. This allows for flexibility in air consumption depending on the conditions encountered and can account for variations in how quickly air is used based on physical exertion, environmental conditions, and duration of use.

Having your SCBA filled to this optimal level helps ensure that you can operate safely and effectively without the need for immediate refills during your shift, providing peace of mind and maintaining operational readiness in emergency situations.