The Quest Dual 150 was designed to be placed overhead and out of the way, but can also be placed at ground level for plug and play operation. The Dual 150 was designed to provide improved value while still offering solid performance and energy efficiency. The Quest Dual 150 performs at over 4.9 pints per kWh, compared to the Dual 155 at 7.3 pints per kWh. The Quest Dual 150s are plug and play, and therefore require no installation. Optional condensate pump and ducting kits provide the ultimate in flexibility for the most challenging space restrictions and specialized applications. Comes with a replaceable MERV-8 filter. Made in the USA.