[Editor’s note: When we last visited with lead installer John and his helper Charlie (The NEWS, March 5, 2007), they had just learned the hard way that there’s a lot more to sealing ducts than just ...

[Editor’s note: When we last visited with lead installer John and his helper Charlie (in the June 11 issue), they had learned how to measure external static pressure on a new system they had just ...

Rhvac 8 by Elite Software, www.elitesoft.com, is an HVAC design program that calculates peak heating and cooling load requirements for rooms, zones, systems and entire buildings for residential and ...