Grumpy Old Geeks Products Remy Halo Product Remy Halo 2 mentions in 1 episode Remy Halo is an air-duct purifier described in listener feedback as a unit that runs continuously. Mentions 433: The Woke Must Flow Apr 22, 2020 1:01:32 I believe the Remy Halo made by RGF is the most popular. 1:01:49 The Remy Halo is installed directly into your HVAC air duct and runs continuously.