Nearly every air mattress owner has woken up closer to the floor than they went to sleep, and concluded there is a leak. Usually there is not.

Three Causes, Only One of Them a Leak

Temperature is the largest. Air contracts as it cools, and a room that drops several degrees overnight takes measurable pressure out of a bed. The bed has not lost air; the air has taken up less space.

Material stretch is the second. A new air bed stretches during its first few uses as the seams and material settle, which shows as softening that stops after a few nights.

And then there are actual leaks, which are the least common of the three on a new bed.

The Built-In Pump

Beds with an integrated pump remove the most common practical problem, which is not owning the right pump.

A tyre compressor is the wrong tool: it produces high pressure and low volume, and an air bed wants the opposite. Ranges where the pump is inside the bed, of the kind at olarhike.net, are addressing that mismatch rather than adding a feature.

Telling Them Apart

• Softer in the morning, firm again when the room warms: temperature
• Noticeable over the first few nights, then stable: material stretch
• Loses pressure steadily regardless of temperature: a leak
• Goes flat within an hour: a significant leak or an unsealed valve
• Only one section soft: an internal seam has failed

Practical Measures

Inflate it several hours before use and top it up just before bed, which lets the initial stretch happen first.

Do not over-inflate. A drum-tight bed puts maximum stress on the seams and is less comfortable than one that is firm but not rigid.

Keep the room temperature stable where possible, and expect to add a little air on a cold night.

Finding a Leak

Inflate fully, then listen. Failing that, soapy water in a spray bottle over the seams and the valve will bubble at the escape point.

The valve is the most common culprit and the easiest to overlook, since it looks closed when it is not fully seated.

Comfort and Insulation

Air beds are cold from below, because the air inside them conducts heat away from a body. This surprises people camping in autumn.

A blanket or a foam layer between the sleeper and the bed makes a substantial difference, and matters more than the tog rating of the duvet on top.

Not for Infants

Worth stating plainly. Air mattresses are not a safe sleep surface for babies. The surface is soft and conforming, and safe sleep guidance is consistent on a firm flat surface in a cot.

A visiting infant needs a travel cot rather than an improvised arrangement, and that applies away from home as much as at home.

Storage

Completely dry, loosely folded rather than tightly creased, and somewhere with a stable temperature. Repeated folding along the same lines is what eventually splits a seam.