Abstract: Described are a new type of storm windows, along with an easy way (and less expensive) of installing the press-fit storm window, on existing frames or windows, without the hassle and expense of replacing the whole window (to save time, cost, and inconvenience), to increase R-value (insulation efficiency) for the windows (i.e. reduce energy waste). This relates to the construction and installation and use of easily installed low cost interior or exterior storm windows, which are attractive and effective in reducing heat and noise transmission. Different approaches and variations to implement this are shown here.