Why Should I Know About Solar Heat Gain Coefficients?

Thursday, September 23, 2010
Katie Pettit  Katie, the Go-to Girl for Windows, writes... 
 
 What does solar heat gain coefficient mean? 

 And why is it something I should know?

  Solar gain
(also known as solar heat gain or passive solar gain) is defined as the rising temperature in a space, object or structure (a window, for example) coming from solar radiation. The strength of the sun and the ability of the structure influence that object's resistance to the radiation.
 
   When a window is struck by sunlight, it absorbs short-wave radiation from the light and emits heat. The solar heat gain coefficient (SHGC) measures the ability of a window to block solar heat. The SHGC refers to the fraction of the heat from the sun that passes through a window. The solar heat gain coefficient is expressed as a decimal between 0 and 1. The smaller a window's solar heat gain coefficient, the less heat from sunlight is allowed the space.
 
              solar radiation  
          A diagram of solar heat transmitting through a window.
 
   Understanding the SHGC can help dramatically reduce energy costs that deal with heating and cooling concerns. Higher SHGCs are beneficial for colder climates, whereas lower SHGCs are beneficial for warmer climates. The solar heat gain coefficient can be found on the National Fenestration Rating Council label that is attached to the product by the manufacturer.
 
   For more information regarding energy efficient products, contact FAS WindowsDoors at 1-888-422-1960. If you have any questions you'd like to submit online, you can always ask our FAS expert! Call us today to schedule your FREE in-home estimate!
Katie Pettit 9/23/2010

Add your comments:

Items in bold indicate required information.




Latest Posts:

Archives:

Feeds:

rss

Other Sections


From Our Customers

I asked FAS along with three other window manufacturers for a quote. FAS had a good quote and good reputation so I decided to go with them. I got their Simonton windows and customized the order. Their sales rep was very knowledgeable, went step-by-step, had a sample window that he brought in, and he was pretty detailed. They had somebody come out and do an in-depth measurement to make sure everything would be perfect. The installation was done by two guys and they did a good job. They were very clean, picked up after themselves and made sure that we were happy before they left. The overall quality of the windows is good and I like them.
Review Submitted on March 3, 2017 , 04/24/2017
OUR 3 CAREFREE STEPS TO HAPPY HOMEOWNERS. Get Your Free Estimate.
OUR 3 CAREFREE STEPS TO HAPPY HOMEOWNERS
Step 1 Consultation: Meet with a skilled representative at you home to discuss your project. Get Your Free Estimate. Step 1 Consultation: Meet with a skilled representative at you home to discuss your project. Step 2 Production: Your custom order will be sent out with your exact mesurements. Get Your Free Estimate
 
Step 2 Production: Your custom order will be sent out with your exact mesurements. Get Your Free Estimate. Step 3 Installation: We take care of prep as well as clean up. Enjoy your new windows or doors. Get Your Free Estimate.
 
Get Your Free Estimate.
triple0 tab black spring 2019
triple0 spring 2019