Comparing home window types depends on architectural considerations, maintenance requirements and how they perform for particular needs such as ventilation and security. Home windows are fixed or operable. Fixed windows create accents, enhance views and provide light to areas that don't need ventilation. Operable windows open by sliding horizontally or vertically, or by hinging inward or outward.
Jalousie windows have horizontal glass panels that work as a glass shutter. They are not suitable for cold climates because they allow excessive air flow, leading to heat loss.
Casement windows are hinged on one side and open outward. Although they provide great ventilation, they need enough space outside to fully open. Picture windows don't open but offer unobstructed views. They are ideal for areas prone to strong drafts, to install in hard-to-reach places and to enhance the light of a room.
Awning windows are hinged at the top and can be left open during rain. Hopper windows are hinged at the bottom and they are used for ventilation above doors. Gliding windows have one panel that slides left or right. Only one of the panels can be open at a time.
Double-hung windows have two panels that slide up and down, allowing cool air to enter from below and warm air to exit from above. Single-hung windows have a fixed upper panel and a lower panel that slides up.
Bay and bow windows project out and commonly surround a sitting area. They usually have a fixed center panel and an operable panel on each side. Skylights are windows installed on the ceiling. They can be fixed or operable and come with UV protection.