Air filtration in smaller homes

If your house is  a cottage or a smaller dwelling, you may notice that your home gets dust balls and lint collecting very quickly on the ceiling, fans and registers.  Your air filter will get dirty faster.

When the air handler doesn't have to move the air as far, the air travels at a higher velocity through the house, forcing the dirt to collect much faster in the cracks and crevices.  

I see houses with as little as six registers and one return ... this makes your system very efficient, but also very good for making some extra work for you in the maintenance department.