Ebay offers Refurbished Dyson PH04 Humidify+Cool Formaldehyde Purifier for $300 (reg $1000) after code with free shipping.

Apply Code: BRANDS4YOU

Product Description:
The latest generation 3-in-1 Dyson Purifier Humidify+Cool Formaldehyde™ combines intelligent sensing with an advanced filtration and humidification system to purify, humidify, and cool you. Three phases of purification sit within a fully sealed filtration and airflow system. So what goes inside, stays inside. A solid-state formaldehyde sensor and a unique catalytic filter detect and continuously destroy formaldehyde¹, a HEPA filter³ captures 99.97% of particles 0.3 microns⁶ in size. Then powerful Air Multiplier™ technology projects purified, hygienically humidified air throughout the room.² For a healthier, more comfortable environment.
¹Third party full machine testing based on GB/T 18801-2015. Results may vary in practice. ²Tested for air projection (DTM801) and humidification (TM-002110). ³Particle challenge by DEHS oil specified in EN1822 within a chamber specified in ASTM F3150. ⁴Requires device to run app, Wi-Fi or mobile data, Bluetooth 4.0 support, and iOS version 10 or Android version 5 (or above). Standard data and messaging rates may apply. Refer to the MyDyson™ app for compatible voice services. ⁵At fan speed 1. ⁶Tested per ISO 29463 ⁷Fan; not air conditioning unit