Changes to ASHRAE 52.2-2017
ASHRAE 52.2-2017 – Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size has been released, revising and superseding the 2012 version…
AHAM HRF-1-2016 – Energy and Internal Volume of Refrigerating Appliances
AHAM HRF-1-2019 – Energy and Internal Volume of Refrigeration Products has been released. This revised standard is intended to establish a uniform procedure for measuring…
Duct Air Leakage Test – Free SMACNA DALT Mobile App
A free app, DALT, Duct Air Leakage Test helps estimate air leakage from ductwork. Released by the Sheet Metal and Air Conditioning Contractors’ National Association,…
HVAC Software — New Mobile Apps for iPhone
Carmel Software has developed 12 mobile apps for HVAC calculations that work on the iPhone, iPad and other mobile devices. HVAC Quick load takes user…