Today only for one of their deals of the day, Woot! has a selection of Turbro Fireplaces and Infrared Heaters for $63.99 to $219.99. Prime members get free shipping at Woot! (get a free trial), otherwise shipping is a flat $6.
Walmart has up to an extra 75% off a selection of Air Purifiers and Accessories. Walmart offers free shipping on most orders for Walmart+ members, otherwise get free shipping on most orders of $35 or more. Select items qualify for free store pickup.
Wayfair is having a limited time Summer Breeze Sale with nice savings on a selection of Top-Brand Air Conditioners. Also, free shipping is included on all items in this sale.