As one of its daily deals, Home Depot offers the Winix Ultimate Pet PlasmaWave True HEPA Air Cleaner, model no. WAC9500, for $167 with free shipping. That's $13 under our April mention and the lowest total price we could find by $98. It captures 99.99% of airborne pollutants as small as 0.3 microns and features 5-stage filtration, washable pre-filter, three sensors, four speed settings, remote control and a clean air delivery rate of up to 284 square feet. Deal ends today.