How to Improve Air Consumption

Good air consumption comes from doing less work, not from breathing less. Drop excess weight, get horizontal, kick efficiently with a glide, stay warm and relaxed, and fix leaks. Measure your surface consumption rate on ordinary dives to see what's changing. Never skip-breathe; it builds carbon dioxide and makes you breathe harder.

By Jeremiah Gardner · Last reviewed October 16, 2026

Most divers who want better air consumption try to breathe less. That's backwards. You breathe as much as your body needs, and your body needs more when you're working hard, cold, stressed or carrying a buildup of carbon dioxide.

The way to use less gas is to do less work. That's a system problem, not a breathing trick.

Why do you use the gas you use?

Your breathing rate follows your carbon dioxide level. Anything that makes your muscles work harder produces more carbon dioxide, and you breathe more to clear it. So the question isn't "how do I breathe less?" It's "what am I doing that makes me work?"

The system view: what actually cuts consumption

Change	Why it helps
Drop excess weight	Less weight means less air in the wing, less drag and less effort to stay stable
Get horizontal	A flat diver presents less drag and every kick pushes you forward, not up
Kick efficiently	A frog kick with a glide moves you further per stroke than a fast flutter
Slow down	Drag rises steeply with speed; half the speed takes far less effort
Stay warm	Cold makes you burn energy and breathe more; dress for the water, or dive dry
Streamline your gear	Dangling hoses, clips and pockets add drag on every kick
Relax and plan	Uncertainty and rushing raise your breathing rate; a clear plan lowers it
Fix leaks	A small leak at a first stage or O-ring wastes gas all dive; a bubble check finds it

Each of these is small. Together, they're the difference between a diver who turns the dive early and one who finishes with gas to spare.

Start with weight and trim

Excess weight forces you to put air in your wing to stay neutral. That air makes you bigger and harder to push through the water, and it makes your buoyancy less stable, so you work to hold depth. Do an end-of-dive weight check: How Much Weight Do I Need?

Trim matters just as much. If your feet hang below you, every kick pushes you partly upward and your body acts like a brake. See Horizontal Trim.

Then fix your kick

Long, slow strokes with a glide are far more efficient than fast, short kicks. Learn the frog kick and let each stroke carry you before starting the next. See How to Frog Kick.

Breathe well, not less

Breathe slowly, fully and continuously. Don't skip-breathe or pause between breaths to stretch your gas: that lets carbon dioxide build up, and you'll end up breathing harder. If breathing becomes unexpectedly difficult or rapid, stop the task, reduce exertion and signal the team. Follow the response learned in training; persistent difficulty is a reason to end the dive, not push on to improve a consumption number.

How do you know if you're improving?

Measure it. Your surface consumption rate, the gas you'd use per minute at the surface, lets you compare dives at different depths. Record start and end pressure, dive time and average depth from your computer, and work it out after the dive. The method is in How to Calculate Your SAC Rate and RMV.

Compare like with like: similar depths, similar effort, similar water. A drift dive and a dive into current will never match.

Plan with planning rates, not your best day

Even if your measured rate drops, plan conservatively. UTD's planning rates are 0.5 cubic feet per minute at rest, 0.75 while swimming and 1.0 under stress, and the reserve examples here use the stressed rate. Increase the planning rate if the team needs more. A good consumption rate gives you more margin. It doesn't shrink your reserve. See Gas Management for Recreational Divers.

Get an outside view

Most of what drives your consumption, like trim, kick efficiency and small movements you don't notice, is easiest to see on video. Our Scuba Coaching program builds a training plan around exactly this, and Essentials of Recreational Diving fixes the foundations in one focused course.

Frequently asked questions

What is a good air consumption rate?

It varies with the diver, the dive and the conditions. For planning, UTD uses 0.5 cubic feet per minute at rest, 0.75 while swimming and 1.0 under stress. Your own measured rate tells you more than any target.

Does skip breathing save air?

No. Pausing between breaths lets carbon dioxide build up, which drives you to breathe harder later. Breathe slowly and completely instead.

Why do I use more air than my buddy?

Body size, fitness, experience, weighting, trim and kicking all play a part. Body size can influence demand, but workload and individual physiology also matter. Use measured consumption in context and plan for the team rather than trying to match someone else's number.

Will a better regulator lower my consumption?

A well-serviced regulator that breathes easily helps a little. Weighting, trim and propulsion make a much bigger difference.