Coleman Mach 5600 BTU Electric Heat Kit 38203-4551
Coleman Mach 5600 BTU Electric Heat Kit 38203-4551 — Product description
Coleman's 5,600 BTU electric heat kit turns a heat-ready Mach rooftop assembly into a heat-and-cool unit. It runs on 120V shore power and takes the morning chill off without burning propane. Fits low-profile 35xxx and 45xxx and medium-profile 38xxx and 48xxx assemblies, not Mach 8.
Cool mornings in the RV don't have to mean firing up the propane furnace. This Coleman electric heat kit adds 5,600 BTU of warmth straight through the rooftop AC you already own, as long as that unit is running a heat-ready ceiling assembly. It's the simple way to take the chill off before the sun comes up.
Here's how it works. Coleman builds certain Mach ceiling assemblies as heat-ready, meaning they're wired and sized to accept an electric heat element. This kit is that element. It drops into the assembly, runs on 120V shore power, and turns your air conditioner into a heat-and-cool unit. No separate heater to mount, no extra ductwork, no propane burned.
Fitment matters, so check your assembly before ordering. This kit is made for the low-profile 35xxx and 45xxx series and the medium-profile 38xxx and 48xxx series. It does not fit Mach 8 units. If your ceiling assembly isn't the heat-ready version, the kit won't have the wiring it needs, so confirm that first.
Who's this for? Anyone who camps in shoulder season, spring and fall, when the nights dip but you're plugged into shore power at the site. Electric heat off the rooftop unit is quiet, even, and it doesn't touch your propane supply. That's a real advantage when you're trying to stretch a tank or you just don't want the furnace cycling all night.
A word of honesty. This is supplemental electric heat, not a furnace replacement. In mild cold it does a great job warming the cabin. When temperatures drop hard below freezing, you'll still want your propane furnace for the heavy lifting. Think of this as the every-morning comfort layer, the thing you reach for far more often than the furnace.
It's a genuine Coleman part, MPN 38203-4551, built to match the ceiling assembly it installs in. If you're comfortable working around your rooftop unit's wiring, it's a straightforward add. If you're not, any RV tech will have it in and running in short order.
Key Features
- 5,600 BTU electric heat output takes the chill off cool mornings without firing up the propane furnace
- Runs on 120V shore power, so it heats while you're plugged in at the campsite
- Drops into Coleman Mach heat-ready ceiling assemblies, low profile (35xxx / 45xxx) and medium profile (38xxx / 48xxx)
- Turns your existing rooftop AC into a heat-and-cool unit, no separate heater to mount
- Genuine Coleman part, MPN 38203-4551, built to match the ceiling assembly it installs in
- Not compatible with Mach 8 units, so confirm your assembly before ordering
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 Mach 5600 BTU 120V Electric Heat Kit |
|---|---|
| Brand | Coleman |
| Manufacturer Part Number | 38203-4551 |
| UPC | 755790009459 |
| Product Type | Electric Heat Kit |
| Heat Output | 5,600 BTU |
| Voltage | 120 Volt |
| Compatible Assemblies | Coleman Mach heat-ready ceiling assemblies: 35xxx / 45xxx low profile, 38xxx / 48xxx medium profile |
| Not Compatible With | Mach 8 |
| Manufacturer | Coleman RVP |
Frequently asked questions
What does this heat kit do?
It adds 5,600 BTU of electric heat to a Coleman Mach heat-ready ceiling assembly, turning your rooftop air conditioner into a heat-and-cool unit that runs on 120V shore power.
Will it work with any Coleman Mach air conditioner?
No. It fits heat-ready ceiling assemblies in the low-profile 35xxx and 45xxx series and the medium-profile 38xxx and 48xxx series. It does not fit Mach 8 units.
Do I need a heat-ready ceiling assembly?
Yes. The ceiling assembly has to be the heat-ready version, which is wired and sized to accept the heat element. If yours isn't heat-ready, this kit won't have the wiring it needs.
What voltage does it run on?
It runs on 120V, so it heats when you're connected to shore power at the campsite.
Can this replace my propane furnace?
Think of it as supplemental heat. In mild cold it warms the cabin nicely without burning propane, but when temperatures drop well below freezing you'll still want the furnace for the heavy lifting.
