With the stock market in turmoil and housing in a slump, appliance manufacturers are taking the long view and retooling their offerings for aging baby boomers.

In the kitchen, General Electric Co. is designing ovens with easier-to-open doors and automatic shut-off burners. A joint venture of Germany's Bosch and Siemens AG has introduced a glass cook top for its premium Thermador brand designed to prevent boil-overs. In the bathroom, Moen is trumpeting new grab bars that can support a 350-pound person, and Kohler is devising...