The Dometic TMG Thermostat Control Module is the brain behind your RV's climate control system. This essential component manages heating and cooling operations, maintaining comfortable temperatures in your living space. If your RV's heating or air conditioning isn't responding to thermostat adjustments, a faulty TMG module is often the culprit.

• Compatible with 2003 and newer Dometic climate control systems
• Manages both heating and cooling functions through a single control interface
• Digital temperature sensing and regulation for precise climate control
• Direct replacement for original Dometic OEM part
• Essential diagnostic component for HVAC troubleshooting
• Integrates with standard RV 12V electrical systems

Frequently Asked Questions

How do I know if my TMG thermostat module is failing?

Common signs include the thermostat not responding to temperature adjustments, the heating or AC running continuously, or the system shutting off unexpectedly. If your RV's climate control is unresponsive or erratic, the TMG module should be tested.

Will this part work with my 2005 Dometic system?

Yes, this TMG module is compatible with 2003 and newer Dometic climate control systems, including 2005 models. Verify your system uses the Dometic TMG control interface before ordering.

Is installation difficult for an RV owner?

The TMG module typically mounts inside your RV's main living area and connects to your existing thermostat wiring. Most RV owners can handle the installation, though consulting your system's manual or a technician is recommended if you're unfamiliar with electrical connections.

Why Elkhart RV Parts

We specialize in hard-to-find Dometic replacement parts for RV owners who need exact OEM components. Shipping directly from Elkhart, Indiana—the RV capital of the world—we stock genuine Dometic parts and provide expert support to help you identify and install the right component for your system.