---
title: What is ATA and why does it matter?
description: Learn how ATA pressure works in hyperbaric chambers, the difference between Airvida’s oxygen delivery and pure medical oxygen systems, and how pressure affects healing.
---

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# What is ATA and why does it matter?

**ATA (Atmospheres Absolute)** measures pressure in a hyperbaric chamber. Normal sea-level air pressure is **1.0 ATA**. Increasing pressure in a chamber allows your body to absorb more oxygen, which supports healing, circulation, and energy.

- **Airvida chambers typically operate at 1.3 to 1.5 ATA**, classified as **mild hyperbaric therapy (mHBOT)**. These are ideal for home or wellness use — safe, comfortable, and effective with regular sessions.
- **Clinical HBOT systems** may reach **2.0 ATA or more** and are often paired with **100% medical-grade oxygen**, requiring prescriptions and supervision.

#### 💨 Do Airvida chambers use pure oxygen?

No — Airvida chambers **compress room air** or connect to an **oxygen concentrator**, which filters and enriches oxygen to about **90–96% purity**, depending on the system. This delivers more oxygen than ambient air without requiring tanks or specialized infrastructure.

Even without 100% oxygen, studies show that combining increased pressure with enriched oxygen via concentrator yields significant wellness and recovery benefits.

#### 🔍 Summary:

- **1.3–1.5 ATA + oxygen concentrator (Airvida)** = ideal for regular home or wellness use
- **2.0+ ATA + medical oxygen tank** = for clinical protocols under supervision

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