Exclusively for our readers, this NewAir 10,000 BTU Portable Air Conditioner (model number AC-10000E ) drops from $519.94 to $399.95 to $299.95 at Air & Water with the code BRADS10000, plus it ships free. This is the lowest price we could find on this unit by $80, and beats our last mention by $30. It is well reviewed and cools up to 325 sq. ft. It is also designed to eliminate excess moisture and comes with an air filter for cleaner, fresher air. Plus, it comes with a one year warranty. There is no sales tax (except CA).