June 7, 2015



March 9, 2014

More than two years after Hurricane Sandy, we have been involved in the restoration design, resiliency design, as well as volunteering in the rebuild efforts. We now know that resiliency must be integrated into the design of any project. It is surprising how this can b...

March 8, 2014

Ramez Afify of E4P consulting engineering clarifies an industry myth. Using condensing boilers with existing radiators results in significant improvement in building energy consumption.  The article was first published on Consulting -  Speciying Engineer Magazone on Ap...

March 8, 2014

Ramez Afify of E4P discusses the Sustainable Design of Water Source VRF on the October 2013 of ASHRAE Journal:


One of the most attractive applications for watersource VRF is retrofit projects where an existing condenserwater system serves conventional water sourceheat...

June 30, 2008

Ramez Afify of E4P consulting engineering discusses the fundamentals of Air Cooled VRF design.


VRF systems offer controls that match the space heating/cooling loads to that of the indoor coil over a range of operation. Variable speed compressors and fans in the outdoor...

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Retrofitting with Condensing Boilers

March 8, 2014

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