Typically, CPU fan noises are heard when you reboot your PC (the whirring sound you may have heard upon startup) and it goes on to decline as the startup process completes. The purpose of fans on ...

If the duct is a standard size, remove the register and drop the fan into the boot. Secure it to the floor on each side with screws. If the duct is smaller than standard, see photos below. Plug the ...

Restoring multiple speeds to your auto heater/air conditioner blower by replacing a resistor module is a simple repair.