The EdgeStar Extreme Cool Dual Hose 14,000 BTU Portable Air Conditioner and Heater is one of the most powerful units on the market in 2008 and is our top pick for larger spaces up to 525 square feet. Simply put, based on our independent testing and customer feedback, the EdgeStar AP14000HS Portable Air Conditioner offers the perfect combination of cooling power, quality, and style for larger spaces. We recommend this dual hose portable air conditioner as the best choice for cooling rooms from 400 – 525 square feet.. Here are the primary reasons the EdgeStar Extreme Cool units are not only in a class of their own, but are also the most popular units we offer: Another great feature of this portable air conditioner is that it is an environmental friendly unit – It meets new RoHS standards. RoHS, also known as the lead-free directive, stands for Restriction of Hazardous Substances. The goal of RoHS is to restrict the amount of certain toxins in electronic and electrical equipment such as lead, mercury, and cadmium. This restriction lessens the harmful impact these toxins can have on the environment and allows for the safer disposal and recycling of electronics and electrical equipment. Key Features Include: Superior Engineering- Through quality construction and more durable internal components, the AP14000HS is designed to last longer and work in more rigorous environments than other brands.Self-Evaporative System- This AP14000HS offers a new patented Z-Spray auto drain exhaust system that essentially eliminates the need to empty any water from the unit. It also offers a direct drain option that allows you to run the unit 365 days a year without having to empty any water accumulation. Cool Boost Technology – Provides a cooling boost that allows the unit to operate more efficiently and lower your energy cost. Dual Hose Design Proven to provide more efficient and effective cooling (can be used as single hose as well). Year Round Versatility: 4 In 1 air conditioner, heater, dehumidifier & fan that can be used year round Portable Air Conditioner Product Rating*: Quick Spec Guide – EdgeStar AP14000HS Portable Air Conditioner &nbs