1. Types
Window

2. Fixed or Picture Window
Does not open; no ventilation
Minimal window treatment best
Picture windows create a portrait-like space on your walls
Create stunning walls of light and view
Can be used in combination with operating windows and patio doors

3. Sliding or Gliding Windows
open by sliding one sash horizontally past another
Ideal for spaces that are next to walkways and other traffic areas, since they do not project outward
Generally, placement higher on walls is preferred, especially in homes with children.

4. Double or Single Hung
open vertically with sash that slides up and down
top sash can be opened for ventilation
provides an extra measure of safety in rooms with children

5. Casement
crank open for unobstructed views top-to-bottom and side-to-side
open fully, catching breezes and directing the flow of fresh air into home
crank open, which makes them easier to operate over sink or appliances

6. rain or shine, awning windows are an easy way to boost your ventilation
If opening requires a reach, such as over a kitchen sink or counter, awning windows are easy to operate
awning windows are often combined or joined with other window styles.
Awning

7. Hopper
basically awning windows that open from the top and are placed lower on the wall
awning windows also tend to direct rainwater away from the home, while hopper windows let rainwater in
Energy efficient
Good for ventilation in small areas like bathrooms, basements
originally called transom
the angle of the window helps block dirt, leaves from blowing into house
Hard to install window coverings because they angle outward, making privacy an issue

8. Center Pivot Great for air circulation
window covering must clear window when open.

9. Jalousie consists of parallel glass or wooden louvers set in a frame
louvers tilt open and shut in unison, to control airflow through the window
they are usually controlled by a crank mechanism
best-suited for porches that are not climate-controlled and are located in mild-winter climates
common on mid-20th-century homes in Florida, southern CA
can remain open during heavy rains because the glass louvers protrude outward to keep most of the rain from entering in
impossible to achieve a good seal between panes. It is also very hard to secure this design, as the slats are easily and silently removed.

10. Energy Efficiency

11. Energy Star What is ENERGY STAR?
ENERGY STAR is the government-backed symbol for energy efficiency designed to save money and protect the environment through energy-efficient products and practices
The ENERGY STAR label was established to:
reduce greenhouse gas emissions and other pollutants caused by the inefficient use of energy;
and make it easy for consumers to identify and purchase energy-efficient products that offer savings on energy bills

12. Energy Star Rating What makes it ENERGY STAR?
ENERGY STAR qualified, windows, doors, and skylights are manufactured by a qualified Energy Star Partner
are independently tested and certified by the NFRC ratings that meet strict energy efficiency guidelines set by the US Department of Energy