November 23rd, 2017

happy thanksgiving

This is one of our  Blower Door  air leakage testing units.
We use this to check the volume of air "leaking" from a home.

These units are used during

• an Energy Wise audit
• an air leakage test on a newly constructed home as required by the Rhode Island building codes.

The setup process is fairly simple.

• The red insert you see here is attached to an expandable frame that adjusts to the length and width of the door jamb.
• A flexible tube is poked through a little opening in the insert and placed outside and attached to the white fan that was set into an adjustable hole that surrounds the fan making it air tight.
• Another tube is attached to the fan and then to the manometer (I'll describe what the manometer does in a future post ) control unit in the upper left.
• The control unit turns the fan on and off and also controls the speed of the fan. 
  
• The fan is usually setup to push the air out of your home.  This negative pressure is adjusted to -50 pascals of pressure. ( I'll get to the definitions of pressure and pascals later on). 
  

That is it for the setup.  Pretty simple, no damage to door jamb, setup takes about 5-6 minutes.
This unit is going to suck all the air out of your home, it's safe around kids and pets.
That's all for today-  Happy Thanksgiving !!!!!