Abstract: An air mattress having one or more inflatable, air-tight chambers where the firmness is adjustable using a pumping system controlled by one or more remote control units. As an improvement over the prior art, the pumping system is installed within the confines of the mattress and outside of the inflatable chambers to increase overall efficiency, accuracy, reliability, and environment compatibility of the mattress while maintaining the ease of diagnostics and repair. This new art also makes the mattress more user friendly by reducing perceivable pumping noise and by relieving the hassle of dealing with hoses and external pump of the prior art. The air mattress may also include any and all features of the prior art such as mattress edge support foam and layers of comfort-providing foam.