Comprehensive nutrition resource for Sonic Chocolate Shake - Regular. Learn about the number of calories and nutritional and diet information for Sonic Chocolate Shake - Regular. This is part of our comprehensive database of 40,000 foods including foods from hundreds of popular restaurants and thousands of brands.
Duct BlasterÂ®. 1  A Duct Blaster is used to directly pressure test the duct system for air leaks, much the same way a plumber pressure tests water pipes for leaks. 2  The Duct Blaster fan is first connected to the duct system at the air handler cabinet, or a return grille. After temporarily sealing all remaining registers and grills, the Duct Blaster fan is turned on to force air through all.
If you stacked registers on a single duct on second and third floors, for instance, all the heat would go to the second floor. Map out your duct path to upper floors before you start cutting any holes. Ducts should be able to run between studs in the wall and then turn into a joist bay (the space between two joists). Make sure the studs and bays line up well enough to leave a clear path. Basic Rule No. 5: When you make a turn, use a fitting designed for the purpose. That will keep the air moving efficiently.