awning basics
Awnings intercept solar heat before it enters into the house, which makes them very effective cooling devices.
Awnings & Energy savings
Window and patio awnings can reduce indoor temperatures by as much as 8-15º F (4-8ºC), though it all depends on features like the drop of the awning, the color of the fabric, the exposure of the window, etc. Studies quoted by EERE for temperate climates, show that south-facing awnings can reduce the summer heat by up to 65%.
Shade effectiveness
The awning "drop" determines the amount of shade. Awnings on the west and east side of the windows should have drops of 60% or more. In some cases, sideless awnings are less effective.
See: Awning Types
New Options
More recent models involve options like lateral arms and retractable capabilities, making awnings more easy to use. Motorized and retractable awnings are now common. See: Awnings Types and Awning metal frames.
New Fabrics
Most awnings use synthetic fabrics (canvas is rather outdated, and awnings with slats is now a marginal option). Metal awnings is another option.
See: Awning fabrics.
Awnings Installation & Manufacturers and Professionals
PAMA professional awnings and manufacturers are good options, if you live in USA. Professionals can provide useful information about designs, fabrics, alternatives, etc. Just ask for references, and demand experience.
See, for details: Awning installation, manufacturers, prices and warranties
Prices
Awnings are affordable devices, though more expensive than other similar alternatives, namely window films and screens, or venetian blades. Costs vary widely with the type of awnings, but prices between $500 and $1000 per small-medium window are common. As expected, prices of custom-manufactured awnings are significantly higher.
See also:
