Recently, the revised 2015 IL Energy Code (IECC) quietly took effect for any permits issued after Jan 1 2016. Here is a list of major changes in the new
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Top 10 changes in the 2015 IL Energy Code (IECC)
New 2016 Illinois Energy Code – State Adopts Energy Rating Index Compliance Option
As of Jan 1, 2016 the State of Illinois now allows a HERS Rater such as Eco Achievers to help show a building project's compliance under this new pathway of the Illinois energy code.
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