RGF® REME HALO® In-Duct Air Purifier for Entire Home ($1299) RGF’s REME HALO® In-Duct Air Purifier is an optional add-on we offer with our Trane and Goodman Systems. It purifies air in your entire home/building and kills almost 99% of germs, bacteria & mold. $1,299.00 Quantity RGF® REME HALO® In-Duct Air Purifier for Entire Home ($1299) quantity Add to cart