Coleman 9420A381 Digital Heat Pump Thermostat
Coleman 9420A381 Digital Heat Pump Thermostat — Product description
The Coleman 9420A381 is a single-stage digital wall thermostat for Coleman Mach heat pump and gas furnace RV systems. It runs on 12 volt DC, gives you a clear digital readout, high/low fan speeds, and an Auto/On fan mode in a low-profile black case.
The Coleman 9420A381 is a single-stage digital wall thermostat built for Coleman Mach heat pump and gas furnace RV systems. If your old dial control finally gave up, or you just want a clean digital readout at the wall, this is the direct replacement for a Coleman Mach heat pump setup. It runs on 12 volt DC, so it wires straight into your RV's house electrical without any extra transformer.
What you get is straightforward, honest climate control. The digital readout shows you exactly where the temperature sits, no squinting at a dial. You get high and low fan speed control, so you can run it quiet overnight and step it up when the coach heats up midday. The fan mode switches between Auto and On. Leave it on Auto and the fan cycles with the system. Flip it to On and the fan runs continuously to keep air moving, which a lot of folks prefer for even temps front to back.
This is a single-stage control, meaning it manages one stage of heating and cooling. It's designed specifically for Coleman Mach heat pump systems, and it also handles gas furnace control in those setups. That's an important point. This isn't a universal thermostat you drop on any RV. It talks to Coleman Mach heat pump gear, so check that your rooftop unit and control box match before you order.
Installation is about as simple as it gets. The unit comes pre-wired to two electrical connectors, so you're plugging into existing harnesses instead of fishing individual leads onto screw terminals. That keeps the swap quick even if wiring isn't your favorite job. The black case measures 5-1/2 inches long by 3-3/4 inches wide by 1-1/8 inches deep, a low-profile footprint that sits flat against the wall without dominating the space.
If you're a full-timer or a weekend camper who wants dependable, no-nonsense temperature control that matches your Coleman Mach system, this is the replacement to grab. Wire it in, set your temp, and get back to enjoying the trip.
Key Features
- Single-stage digital control for Coleman Mach heat pump and gas furnace systems, one unit for both heating and cooling
- Digital temperature readout, no more guessing at a dial position
- High and low fan speed control for quiet nights and strong midday cooling
- Auto/On fan mode, cycle the fan with the system or run continuous airflow
- 12 volt DC operation wires directly into RV house power, no separate transformer
- Pre-wired to 2 electrical connectors for plug-in installation
- Black case, 5-1/2 in L x 3-3/4 in W x 1-1/8 in H low-profile footprint
Why Buy from NVN Marine
- Authorized Coleman reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Coleman 9420A381 Single-Stage Digital Heat Pump/Gas Furnace Thermostat |
|---|---|
| Brand | Coleman |
| Manufacturer Part Number | 9420A381 |
| UPC | 755790009237 |
| Type | Single Stage Digital Thermostat |
| Application | Coleman Mach Heat Pump Systems |
| Control | Heat Pump / Gas Furnace |
| Display | Digital Readout |
| Voltage | 12 Volt DC |
| Fan Speed Control | High / Low |
| Fan Mode | Auto / On |
| Case Color | Black |
| Wiring | Pre-Wired to 2 Electrical Connectors |
| Length | 5-1/2 in |
| Width | 3-3/4 in |
| Height | 1-1/8 in |
Frequently asked questions
Will this thermostat work with any RV air conditioner?
No. The 9420A381 is designed for Coleman Mach heat pump systems only. It controls both the heat pump and the gas furnace in those setups. Check that your rooftop unit and control box are Coleman Mach heat pump gear before ordering.
What voltage does it run on?
12 volt DC. It wires directly into your RV's house electrical system, so there's no separate transformer to add.
Is this a single-stage or multi-stage thermostat?
It's a single-stage control. It manages one stage of heating and one stage of cooling for your Coleman Mach heat pump system.
Does it control the furnace too?
Yes. In a Coleman Mach heat pump system it handles gas furnace control alongside the heat pump.
How does it install?
It comes pre-wired to two electrical connectors, so you plug into your existing harnesses instead of wiring individual leads onto screw terminals. That keeps the swap quick.
What fan options does it have?
You get high and low fan speed control, plus an Auto/On mode switch. Auto cycles the fan with the system. On runs the fan continuously for steady airflow.
What are the dimensions?
The black case is 5-1/2 inches long, 3-3/4 inches wide, and 1-1/8 inches deep.
