"The Energy Department on Wednesday proposed reversing a Trump-era rule that was expected to undermine its ability to regulate efficiency of both residential furnaces and commercial water heaters.
The Trump administration’s rule — completed five days before President Biden's inauguration — was expected to keep inefficient heaters on the market for more time by dividing up the heaters into two categories based on how they’re vented.
By creating a new class of products for furnaces that had a type of venting known as noncondensing venting, these furnaces would need to be regulated separately and could not be entirely phased out."
Source: The Hill, 08/19/2021
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