IHOUMEX RV Thermostat 7330F3852 Coleman Mach Replacement — 12V Single-Stage, Auto/On Fan, High/Low Speed (Black)

The IHOUMEX 7330F3852 is a 12V single-stage RV wall thermostat designed to replace Coleman Mach-series controls and manage heating, cooling and fan speed in recreational vehicles.

This compact wall-mounted thermostat fits a range of Coleman Mach air conditioners and provides manual temperature regulation, Auto/On fan control and high/low fan-speed options. Built for RV use, it uses a simple mechanical readout and six color-coded wires for straightforward installation. The design focuses on reliability and ease of use so you can restore or upgrade cabin climate control without complex programming.

Which Coleman Mach models will this thermostat work with?

The 7330F3852 is compatible with many Coleman Mach air conditioner families commonly found in RVs. It supports single-stage cooling and standard fan controls used across Mach series units, covering several specific model numbers.

• Compatible with Coleman Mach 15, Mach 3 Plus, Mach 1 Power Saver, Mach III Power Saver, Mach 8 Polar Cub, Mach 8 and Roughneck families.
• Listed as compatible with Coleman Mach models 8330-336, 337, 338, 339, 368 and 386.
• Works as a direct wall thermostat replacement when wiring and function match the original control.

How do I install the IHOUMEX 7330F3852 in my RV?

Installation is intended to be simple for someone comfortable with basic RV electrical work. The thermostat uses six color-coded wires and includes wiring instructions; follow the original wiring pattern and disconnect power before starting.

• Turn off RV battery and shore power before handling wiring for safety.
• Match the six color-coded wires to the existing thermostat connections per the included diagram.
• Mount the wall plate, secure the thermostat and restore power to test functions.

What controls and features does this thermostat offer?

The unit provides manual temperature readout with basic mode and fan controls suited for standard RV HVAC systems. It supports Auto and On fan modes plus selectable high/low fan speeds to balance comfort and power use.

• Mechanical temperature readout for straightforward set-and-forget operation.
• Auto/On fan control to allow system-managed or continuous fan operation.
• High and low fan-speed selection for two-stage airflow options.

Is this thermostat durable enough for life on the road?

Components and housing are chosen to withstand normal RV conditions, including vibration and variable temperatures encountered during travel and storage. The 7330F3852 is built to be a long-lasting replacement when installed correctly and maintained as part of the vehicle’s HVAC system.

• Sturdy ABS-style housing designed for wall-mounted RV applications.
• Simple mechanical parts reduce electronic complexity and ease troubleshooting.
• Intended for single-stage HVAC systems commonly used in RVs.

Who this is for: RV owners, technicians and fleet managers who need a reliable, no-frills replacement thermostat for Coleman Mach-series air conditioners. Choose this model if you want a straightforward 12V single-stage wall control with easy wiring, basic fan options and broad Mach-series compatibility—especially useful for restoring factory-style operation after a failed control or when upgrading to a clean, consistent wall unit.