Coleman Signature Mach 3 RV AC | 38263-065 | 13.5K BTU | Polished White

Cool your RV reliably with the Coleman Mach Signature Mach 3 RV Air Conditioner (Part #38263-065) in polished white — the Signature-series variant of the popular 13,500 BTU Mach 3 platform. With 320 CFM of airflow matching the bigger Mach 15, R-32 next-generation refrigerant, and the same proven medium-profile design that fits any standard 14"×14" roof opening, this Signature Mach 3 delivers reliable cooling with an upgraded premium polished-white shroud finish.

⭐ Polished White Signature Finish

Standout appearance vs the standard Mach 3 Plus: this Signature variant features a polished white shroud finish — a premium look that upgrades the exterior appearance of your RV roof over the standard textured finish.

Prefer Textured White Instead?

If you prefer the standard textured white shroud finish, see the Coleman Mach 3 Plus RV Air Conditioner (38203-066) — Textured White. Same internal specs and performance — different shroud finish.

Other Signature Mach 3 Finish Options

• Coleman Signature Mach 3 (38263-066) — Arctic White
• Coleman Signature Mach 3 (38263-068) — Polished Black
• Coleman Signature Mach 3 (38263-069) — Textured Black

13,500 BTU — The Preferred Mid-Range Choice

13,500 BTU of cooling — substantial output for most RV cooling scenarios:

• Mid-size to large travel trailers and fifth wheels
• Smaller motorhomes
• RVs in moderate to warm climates
• Setups with typical cooling loads (well-insulated, normal sun exposure, average size)

320 CFM Airflow — Matches the Mach 15

One of this platform's standout specs: 320 CFM of evaporator airflow — the same airflow rating as the much larger 15,000 BTU Mach 15. That airflow capacity makes this unit equally effective in both ducted AND non-ducted ceiling assemblies. Strong airflow pushes cool air through long ducted runs while still maintaining performance in non-ducted installations.

R-32 Next-Generation Refrigerant

Uses R-32 refrigerant — the next-generation low-GWP refrigerant that replaces R-410A in all new Coleman Mach production:

• Approximately 70% lower global warming potential than R-410A (GWP ~675 vs ~2,088)
• Zero ozone depletion potential
• Improved energy efficiency in many operating conditions vs R-410A
• Meets 2025 EPA AIM Act refrigerant requirements

The 38xxx prefix across all current Coleman Mach models indicates R-32 charge. Note: R-32 is classified as A2L (mildly flammable) — service must be performed by a qualified technician using appropriate equipment.

Built for Years on the Road

Shares Coleman Mach's engineering discipline across the lineup:

• All-copper tubing throughout the refrigerant circuit — no aluminum compromises
• Gas-flux brazed joints — higher integrity than standard soldering, resists vibration fatigue and thermal cycling stress
• Large evaporator and condenser coils with raised lance-style fins — maximizes heat transfer surface area
• Medium-profile shroud (13.8" tall) — lower aerodynamic drag than older standard-height units

Signature Mach 3 vs. Mach 15 — Which Should You Pick?

Same medium-profile platform, same 320 CFM airflow, same R-32 refrigerant, and same 14"×14" mounting standard as the Mach 15. The key difference: BTU capacity.

• Signature Mach 3 (13,500 BTU) — the right choice for mid-size to large RVs with typical cooling loads in moderate to warm climates; draws 13.1 amps
• Mach 15 (15,000 BTU) — the right choice for large motorhomes, long fifth wheels, heavy cooling loads, or extreme heat climates

For most RV owners not regularly camping in extreme summer heat, the Mach 3 is more than adequate cooling. The Mach 15's additional 1,500 BTU advantage matters most when sustained pull-down in high ambient temperatures or large/poorly-insulated spaces is needed.

Optional Heat Strip

For shoulder-season comfort without firing up the furnace, a compatible resistance heater assembly (sold separately) drops into the Signature Mach 3 to add electric heat capability. The unit itself is cool-only.

⚠️ Ceiling Assembly & Thermostat Sold Separately

The 38263-065 is the upper (rooftop) unit only. A complete installation requires:

• A compatible ceiling assembly — ducted or non-ducted (sold separately)
• A compatible thermostat / wall control (sold separately)

The unit ships with a pre-installed roof compression gasket on the base — no additional roof sealant required for the rooftop unit itself. Professional installation recommended given the unit weight, electrical connections, and need for a secure leak-free roof mount.

⚠️ Important Shipping Notes

• Freight items cannot be returned — confirm fitment, dimensions, and configuration before ordering

What's Included

• 38263-065 Rooftop Air Conditioner (upper unit)
• Pre-installed roof compression gasket
• Mounting hardware
• Owner's documentation

Must Be Purchased Separately

• Ceiling assembly (ducted or non-ducted)
• Thermostat / wall control
• Optional resistance heat strip assembly

Key Features

• 13,500 BTU cooling capacity
• 320 CFM evaporator airflow — matches the bigger Mach 15
• R-32 next-generation refrigerant — 70% lower GWP vs R-410A
• All-copper tubing with gas-flux brazed joints
• Large coils with raised lance fins for maximum heat transfer
• Medium profile — 13.8" tall, more aerodynamic than older standard-height units
• Ducted AND non-ducted compatible
• 14" × 14" standard roof opening — fits all standard RV roof vent openings
• Pre-installed roof compression gasket
• Signature series — polished white premium shroud finish
• Textured white sibling available: Coleman Mach 3 Plus 38203-066
• Optional heat strip compatibility (sold separately)
• Backed by a 2-year limited manufacturer parts and labor warranty

Specifications

• Brand: Coleman Mach / Airxcel
• Series: Signature Mach 3
• Part Number: 38263-065
• Function: AC only (cool only)
• BTU Capacity: 13,500 BTU
• Voltage: 115 VAC
• Frequency: 60 Hz, single phase
• Cooling Amps: 13.1 A
• Evaporator Airflow: 320 CFM
• Refrigerant: R-32 (Low-GWP, A2L class)
• Tubing: All-copper with gas-flux brazed joints
• Coil Design: Large evaporator and condenser coils with raised lance fins
• Heat Pump: No (cool only)
• Profile: Medium profile
• Shroud Dimensions: 13.8" H × 26.1" W × 38.0" L
• Roof Opening: 14" × 14" standard
• AC System: Ducted or non-ducted
• Color/Finish: Polished white (Signature series)
• Weight: 79.5 lbs
• Roof Gasket: Pre-installed compression gasket included
• Textured White Sibling: Coleman Mach 3 Plus 38203-066
• Warranty: 2-year limited manufacturer warranty (parts and labor)