A no-nonsense, analog wall thermostat built for RV HVAC systems. The Camco 09221 gives you reliable single-stage heat and cool control without programming menus, Wi-Fi setup, or a steep learning curve -- just turn the dial and go.
The Camco 09221 is a low-voltage mechanical wall thermostat designed as a direct replacement for compatible single-stage RV heating and cooling systems. It operates your RV furnace and roof air conditioner through a straightforward analog interface -- no touchscreen, no app, no batteries required for the control logic.
This thermostat is mercury-free and non-programmable, making it a practical choice for owners who want uncomplicated temperature control. It ships with a wall mounting plate sized to cover screw holes or paint shadows left by the previous thermostat, keeping your wall looking clean after installation.
Controls one stage of heating (furnace) and one stage of cooling (AC) -- compatible with the most common RV HVAC configurations.
Simple rotary temperature control. No programming, no menus, no touchscreen to troubleshoot on the road.
Safe for disposal and compliant with modern environmental standards. No mercury switch inside.
Cover plate included to hide old screw holes or discoloration from the previous thermostat for a finished install.
The 09221 is designed for RV HVAC systems using a standard low-voltage thermostat wiring scheme. It supports:
It does not support two-stage heating, heat pump systems, or zoned HVAC configurations. One furnace, one AC unit -- that covers the majority of Class A, Class C, fifth-wheel, and travel trailer setups.
The 09221 is intended to replace standard single-stage RV wall thermostats using conventional low-voltage wiring (typically a 5- to 7-wire RV thermostat harness). If your existing thermostat uses the standard RV color-coded wiring -- red (Rh/power), green (fan), yellow (cool), white (heat) -- this unit is likely compatible. Verify your existing wiring configuration before ordering.
The 09221 mounts to a standard single-gang wall box or directly to a flat wall surface using the included plate. Wiring terminals are labeled for standard low-voltage connections. No special tools are required beyond a screwdriver.
Many RV owners replacing a failed or erratic digital thermostat choose this mechanical unit specifically because it has no electronics to fail, no firmware to update, and no display to crack. For full-timers and boondockers who want fewer points of failure, a quality mechanical thermostat is a practical long-term choice.