The most efficient car is the one you don't have to build and scrap. Keep old Benzes running and forgo the energy needed to make a new one that will last a third as long if that.

I put in another mini-split heat pump system in the house about 1.5 weeks ago when the old system died (I was trying it nurse it through the winter to avoid the expenditure on a new system). First time the house has been really comfortably warm since we bought it 6 yr ago. The old Heil forced-air HP system (15yo) was noisy and inefficient and a lot of the warm and cool was leaking out the ducts under the house. The new one can barely be heard running and will run you out in a few minutes. These things are amazing and I'm sure our power bill will probably drop by half and pay off in a year or two.

--R


On 12/1/14 11:51 AM, Andrew Strasfogel via Mercedes wrote:
Greater efficiency may be more effective than renewable energy at cutting
emissionsPublished: Monday, December 1, 2014

Combating climate change by increasing energy efficiency may be more
effective than investing in renewable energy technologies, like solar
arrays and towering wind turbines. Pursuing that path may be more
economically prudent, too, advocates said.


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