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An air bed that feels softer in the morning has not necessarily developed a hole. Cooling air, initial material stretch and an actual leak can produce similar first impressions. Observe how the bed behaves before deciding that another pump session—or a new mattress—is the answer.
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Compare like-for-like conditions
Think about when and where you inflated the bed. A warm afternoon followed by a cooler night changes the conditions inside it. Coleman’s air-bed guidance explains that temperature changes and early material stretching can reduce firmness without a puncture.
Follow the bed’s inflation instructions and reassess after it has settled. Add air only within the intended operating guidance. Do not overinflate in the afternoon to compensate for an expected night-time change, and follow the maker’s advice for leaving it in a hot tent or vehicle.
Check the valve and pump arrangement
Make sure the correct closure is fully seated and that any separate deflation opening is closed. Inspect accessible seals for dirt and damage. On a bed with an integrated pump, follow the instructions for the pump control as well as any external cap.
Keep sharp tools away from the valve and do not apply oil or adhesive to a sealing surface as a guess. A damaged valve assembly may need a specific spare part or manufacturer repair.
Look for a puncture methodically
Coleman recommends a soapy-water sponge check for its air beds, looking for bubbles where air escapes. Follow the method approved for your own bed and work around the underside, seams and likely contact points. Avoid getting water into an electric pump or other components that must remain dry.
Once you locate a hole, identify the surface material and use a compatible repair. The GEAR AID/McNett Seam Grip sealant is one adhesive to investigate for approved compatible applications, but it is not automatically suitable for every flocked surface, welded seam or valve. Use the bed maker’s recommended kit where specified.
Decide whether the bed is dependable
Allow any repair to cure fully, then test the bed in stable conditions over a realistic period. A mattress that repeatedly loses substantial support needs further investigation, even if some softening could be explained by temperature.
If you cannot locate the fault, record the model, inflation routine and observations for the manufacturer. Check bedding, tent-floor debris and packing habits for possible damage sources. A controlled diagnosis helps you avoid both discarding a sound bed and relying on one that still has an unresolved leak.
Our sleeping-mat puncture guide explains the sequence for locating a leak, preparing a compatible patch and checking the repair. If replacement becomes necessary, compare a self-inflating mat with an air bed around the whole sleep setup.
Continue with our camping mattress guide.
Reviewed 10 September 2026. This guide is based on published specifications and guidance.