christian kohler
  • Berkeley, CA
  • United States
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christian kohler's Page

Latest Activity

christian kohler replied to Adam Zielinski's discussion Windows: Different Summer and Winter U values?
"Steve, Adam, Andre forwarded your question to me, that is why I responded here. Many manufacturers have products that meet U=0.30, since that was the cut-off for the IRS tax credit. If you are looking for even better windows, you can take a look…"
Nov 24, 2010
christian kohler replied to Adam Zielinski's discussion Windows: Different Summer and Winter U values?
"The winter U-value is what is shown on the NFRC labels, and should be used for code compliance and incentive programs. It is calculated at -18C (about 0F) outside, and 21 C (about 70F), and a roughly 15 mph wind speed. The summer U-value is…"
Nov 23, 2010
christian kohler is now a member of Home Energy Pros
Nov 23, 2010

Profile Information

Company
LBNL
Website URL
http://windows.lbl.gov/Christian

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Jan E. Graveamker replied to Mary Sinkler's discussion Lighting replacement - 300 watt LED flood light
"Hi Mary, What is the purpose of lighting the backyard ?  Sense of safety, night time…"
4 hours ago
Chris Laumer-Giddens liked Chris Laumer-Giddens's blog post Rock Wool Insulation for Floor of High Performance Tiny House
5 hours ago
Joe Davis liked Wayne Melancon's discussion What's the Most Profitable HVAC Job for Your Company?
7 hours ago
Joe Davis replied to Mary Sinkler's discussion Lighting replacement - 300 watt LED flood light
"Well said Dennis, try a lighting calculation for the space you need."
7 hours ago
Chris Laumer-Giddens's blog post was featured

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