"The Attic Tent is unique because it deals with one of the main problems affecting the performance and efficiency of an HVAC system and that is "infiltration" or air loss.  The whole concept of conditioning a space is based on controlling the variables that affect that space.  The Attic Tent actually works with the HVAC system to optimize performance.  When a system is operating, the structure/envelope is either in a negative or a positive pressure, depending on the condition of the air distribution system.  A house or occupied dwelling of any sort must maintain a slight positive pressure at all times.  The purpose of this is to prevent unfiltered externals from being drawn into the condition space, thus affecting the indoor air quality (IAQ).  I have measured the air loss from the pull down attic stairs of my own home and converted it to BTU's.  We calculated approximately a half ton of cooling loss through this area.  Before and after tests have been performed with the Attic Tent and conclude that it does effectively stop air movement through the attic access area."

Rick Pressley, Air Balancing Specialists
Air Diagnostics, Inc.