Estrel will be responsible for designing and engineering heating, cooling, and ventilation systems for various Wiegmann Associates projects.

The average annual sales growth for the 12 months through May 2021 is 17.6% percent.

The average annual sales growth for the 12 months through March 2021 is 8.7%.

The average annual sales growth for the 12 months through January 2021 is 4.8%.

The agreement defines parameters by which ASHRAE and DHS S&T will discuss and share information about emerging research results and technologies in HVAC systems in order to support building occupant health and safety across the Homeland Security Enterprise.

Variable refrigerant flow (VRF) systems have been around for decades, and VRF manufacturers continuously push the limits of energy efficiency with the release of new models. 

The price increases will be 3%-9%, based on labor rates, third-party component vendor prices and a commodity cost rises.

Dr. Junfen Zhang, professor of global and environmental health at Duke University's Nicholas School of the Environment, recommends diligently monitoring and improving IAQ through regular testing and making adjustments to our daily habits.

The ASHRAE Winter Virtual Conference will be held Feb. 9-11.

First place in the HVAC Design Calculations category was awarded to Eslam Mohamed Ali, Ahmed Mohamed Soltan, Amr Gamal Fawzy, Moustafa Ahmed El-Saeid, and Mark Magdy Fouad of Cairo University, Giza, Egypt. Faculty advisors are Dr. Mahmoud Fouad and Dr. Moustafa El-Sallak.