Honeywell PRESTIGE THX9421 - Troubleshooting, Warranty, and Compliance

Prestige
®
THX9321/THX9421 Thermostat
33
69-2493EFS—01
Optional accessories
Vent Boost (coming soon)
This handy device mounts anywhere in your home
(typically bathroom or kitchen) for convenient on
demand ventilation. Select 20, 40 or 60 minutes as
desired for increased ventilation.