ASME PTC 4.3-2017 – Air Heaters
Defects in air heaters can be troublesome for their performance, sparking a multitude of longstanding additional problems. For example, excessive air leakage can be responsible…
AMCA 202-17 – Troubleshooting Problems During Fan Installations
The realization of how easily things can go awry is astonishing. Call it the repercussions of Murphy’s Law or another natural inclination towards chaos, but…
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…