Dometic CT Single Zone RV Thermostat Kit with Control Board

If your Dometic air conditioner is limping along on a dead thermostat or an old analog dial, this is the kit that brings the whole system back under control. The Dometic CT Single Zone thermostat, part number 3316232.700, is a programmable digital control built for RV air conditioning setups. It runs one zone of cooling and heating from a clean capacitive touch panel, and it ships with the matching control board, so you get both halves of the system in one box instead of just the wall head.

In the box you get the capacitive touch thermostat head and the control board that pairs with it. That matters, because a lot of thermostat listings sell you only the wall unit and leave you hunting for a compatible board separately. Here the two are matched, which takes the guesswork out of getting the heat strip and furnace options talking to each other correctly.

Single zone means it manages one air conditioning and heating area. For most travel trailers, fifth wheels, and smaller coaches with a single roof unit, that's exactly what you want. You set a temperature, pick a mode, and the thermostat talks to the control board to fire the compressor, the furnace, or the electric heat strip as needed. No guesswork, no babysitting a mechanical dial while you try to get comfortable.

You get three system modes to work with. Cool runs the air conditioner. Furnace mode fires your gas furnace for real heat when it's cold out. And the heat strip option drives an electric heating element for quick, gentle warmth on those cool mornings when you don't need the full furnace. Being able to pick between furnace and heat strip is handy. The strip sips a little power for a mild chill, and the furnace does the heavy lifting when the temperature really drops.

The LCD display keeps the current temperature, setpoint, and mode right in front of you, and the programmable scheduling lets you set it and forget it. Program a cooler overnight setting and have the coach warming back up before you're out of bed. Fan control is flexible too. You get low, high, and auto fan speeds, plus an auto or on fan mode. Auto cycles the fan with the compressor. On keeps air moving continuously, which helps even out temperature swings in a longer rig.

The capacitive touch case gives you a flat, wipe-clean face with no mechanical buttons to wear out or collect grime. It runs on 12 volt DC, so it wires straight into your rig's house power. One thing worth knowing on any 12V thermostat: give it a clean, steady feed. A weak or shared circuit that sags when the compressor kicks on can cause the display to reset, so it pays to wire it to a solid source.

Because the control board is included, this is a full replacement kit rather than a face-only swap. If your old board is fried or you're upgrading from an analog thermostat, you've got the piece that actually switches the loads. Plan your install around the AC compartment for the board and a dry, protected interior wall for the touch panel. Keep the head out of direct sun where you can, since LCD panels don't love baking behind a window all day.

This control is made to run Dometic air conditioners, so it's the natural choice when you're keeping a Dometic system in the family and want the head and board matched from the factory. If you're not sure whether your unit is a single-zone setup or which mode options your air conditioner supports, check your model before you order, or reach out and we'll help you sort it out. We'd rather get you the right part the first time than have you guessing at the parts counter.