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DOE Proposes Major Energy Efficiency Changes for Commercial Air Conditioners

By Duane Tilden, P.Eng The White House recently announced a number of commitments to energy efficiency, not the least of which is a proposed energy efficiency standard for rooftop air conditioners that could produce the largest electricity savings under any U.S. appliance efficiency… image courtesy of http://akbrown.com/?page_id=278 Source: switchboard.nrdc.org >”[…] NRDC strongly […]

Service Life of Building Components

The standard reference for service life of building components such as HVAC systems, Plumbing, air handlers, Digital Controls, and elevators, etc. may come from many different reference books whose authors have deduced, observed, or tested a sample of similar components to produce a “mean” service life.  It is unlikely that […]