Keeping an enclosed trailer comfortable during hot weather requires a reliable air conditioning system. We researched and compared the top models based on manufacturer specifications, industry standards, and aggregated owner feedback. Our evaluation focuses on cooling performance, durability, ease of installation, and value to help you choose the right unit for your trailer.
| Photo | Product | Score | Buy |
|---|---|---|---|
 |
Dometic Brisk II 13,500 BTU Best Overall 13,500 BTU, 14.5 amps, 30.5 x 27.5 x 10.5 inches |
9.0 | 🛒 Check Price |
 |
Coleman Mach 15 15,000 BTU Best High-Capacity 15,000 BTU, 14.5 amps, 30.5 x 27.5 x 10.5 inches |
8.7 | 🛒 Check Price |
 |
RecPro RV Air Conditioner 13,500 BTU Best Value 13,500 BTU, 13.5 amps, 30 x 27 x 10 inches |
8.4 | 🛒 Check Price |
|
🚗
|
Airxcel 47000 Series 13,500 BTU Best Quiet Operation 13,500 BTU, 12.5 amps, 30.5 x 27.5 x 10.5 inches |
8.1 | 🛒 Check Price |
|
🚗
|
Furrion Chill 15,000 BTU Best Design 15,000 BTU, 14.5 amps, 30.5 x 27.5 x 10.5 inches |
7.8 | 🛒 Check Price |
 |
Atwood Air Command 15,000 BTU Best for DIY Installation 15,000 BTU, 14 amps, 30 x 27 x 10 inches |
7.3 | 🛒 Check Price |
 |
Advent Air 13,500 BTU Budget Pick 13,500 BTU, 13 amps, 30 x 27 x 10 inches |
7.0 | 🛒 Check Price |
1. Dometic Brisk II 13,500 BTU: Best Overall
The Dometic Brisk II is a top choice for enclosed trailers, offering 13,500 BTUs of cooling power suitable for trailers up to 250 square feet. In our evaluation, it consistently delivers strong airflow and maintains temperature even in extreme heat. Owner feedback highlights its quiet operation and durable construction, making it a dependable option for long trips.
However, its 14.5 amp draw can be a limitation for trailers with smaller electrical systems. If your trailer runs on a 15-amp circuit, you may need to upgrade or use a generator. This unit is best for those with adequate power supply and a need for solid cooling.
- High cooling capacity for medium to large trailers up to 250 sq ft
- Quiet operation with multi-speed fan settings
- Easy to install with standard 14×14 roof opening
Pros: Excellent cooling performance; Reliable brand with good support
Cons: Higher power draw may require generator upgrade
2. Coleman Mach 15 15,000 BTU: Best High-Capacity
The Coleman Mach 15 delivers top-tier cooling with 15,000 BTUs, ideal for larger enclosed trailers. Our research shows it handles high ambient temperatures effectively, and owner reviews praise its consistent performance. The adjustable thermostat and two-speed fan provide good control over comfort.
Its weight (around 85 pounds) can make installation challenging without assistance. Additionally, the higher power requirement may not suit all electrical setups. This is best for owners of large trailers who prioritize maximum cooling and have the power to support it.
- Powerful 15,000 BTU output for large trailers up to 300 sq ft
- Two-speed fan and adjustable thermostat
- Compatible with standard 14×14 roof openings
Pros: Exceptional cooling capacity; Proven rugged design
Cons: Heavy unit may require two-person installation
3. RecPro RV Air Conditioner 13,500 BTU: Best Value
The RecPro 13,500 BTU unit offers a budget-friendly option without sacrificing essential cooling. In our comparison, it provides adequate performance for trailers up to 200 square feet. Owner feedback indicates it cools well in moderate climates and is easy to install with included hardware.
However, it is not as quiet as higher-end units, and some users report minor vibration at higher fan speeds. If noise is a concern or you need cooling in extreme heat, you may prefer a more premium model. It is a solid choice for cost-conscious buyers.
- Affordable alternative to premium brands
- Decent cooling for medium trailers
- Includes gasket and installation hardware
Pros: Good value for the price; Simple installation process
Cons: Slightly noisier than premium models
4. Airxcel 47000 Series 13,500 BTU: Best Quiet Operation
The Airxcel 47000 Series is designed for those who prioritize quiet operation. In our evaluation, it runs noticeably quieter than many competitors, making it suitable for sleeping or quiet environments. Its lower amp draw also eases power demands.
However, its cooling output is slightly less effective in very hot conditions compared to other 13,500 BTU models. Some owners note it struggles when temperatures exceed 100°F. This unit is best for moderate climates or users who value silence over maximum cooling.
- Low noise operation for quiet comfort
- Compact design fits standard openings
- Energy-efficient with lower amp draw
Pros: Very quiet running; Lower power consumption
Cons: Less cooling capacity than similarly sized units
5. Furrion Chill 15,000 BTU: Best Design
The Furrion Chill stands out with its stylish low-profile look and easy to use digital controls. Our research shows it performs well in standard conditions, and the remote control adds convenience. The washable filter is a nice touch for maintenance.
However, some owner reviews mention reliability issues in dusty or off-road conditions, with components failing sooner than expected. If you use your trailer in harsh environments, this may not be the most durable choice. It is ideal for those who prioritize aesthetics and ease of use over ruggedness.
- Low-profile low-profile exterior design
- Digital thermostat with remote control
- Easy-to-clean washable filter
Pros: Modern aesthetics; Convenient remote control
Cons: Durability concerns in dusty environments
6. Atwood Air Command 15,000 BTU: Best for DIY Installation
The Atwood Air Command targets DIY enthusiasts with its easy to use installation design. We found the instructions clear, and the unit fits common roof openings without modifications. It provides adequate cooling for medium-sized trailers.
However, its build quality is less durable than competitors like Dometic or Coleman, and some owners report plastic components cracking over time. This unit is a good entry-level option for those who want to install it themselves and are on a tighter budget, but may not withstand heavy use.
- Designed for easy DIY installation
- Includes detailed installation manual
- Compatible with most standard roof vents
Pros: Straightforward installation process; Decent cooling for the price
Cons: Build quality is not as sturdy as premium brands
7. Advent Air 13,500 BTU: Budget Pick
The Advent Air 13,500 BTU is the most budget-friendly unit we evaluated. It offers basic cooling for small enclosed trailers, and its lightweight design makes installation easier. For occasional use in mild climates, it can provide sufficient relief.
However, it struggles to cool larger spaces or maintain temperature in extreme heat. Owner feedback indicates it may not last as long as more expensive models, with some reporting failures after a few seasons. This unit is suitable for those with minimal cooling needs and a strict budget, but serious users should invest in a higher-quality option.
- Lowest cost option in our lineup
- Basic cooling for small trailers under 150 sq ft
- Lightweight design at 65 pounds
Pros: Very affordable; Lightweight and easy to handle
Cons: Limited cooling capacity and airflow
Frequently Asked Questions
What size AC do I need for my enclosed trailer?
The size depends on your trailer’s square footage and insulation. As a rule of thumb, 13,500 BTUs is sufficient for trailers up to 200 square feet, while 15,000 BTUs covers up to 300 square feet. We recommend measuring your trailer and consulting the manufacturer’s guidelines.
Can I install a rooftop AC on any enclosed trailer?
Most rooftop AC units require a standard 14×14 inch roof opening and sufficient roof structure to support the weight (typically 70 to 90 pounds). Check your trailer’s roof construction and reinforcement before purchasing. Some trailers may need additional bracing.
Do I need a special generator to power a trailer AC?
Yes, you need a generator or shore power that can handle the AC’s starting surge (often 2-3 times running amps) and continuous draw. For a 13,500 BTU unit (13-15 amps), a 2,000-watt generator is usually sufficient, but 3,000 watts is safer for startup.
How do I maintain my trailer AC?
Regular maintenance includes cleaning or replacing the air filter every month during use, checking for debris on the condenser coils, and ensuring the roof seal is intact to prevent leaks. Annual professional inspection is recommended.
Are inverter AC units better for trailers?
Inverter AC units are more energy-efficient and quieter, but they are less common in the RV/trailer market. They can run on lower power and have variable speed compressors. However, they are typically more expensive and may require specialized installation.
Our Verdict
After researching and comparing the top models, our top pick is the Dometic Brisk II 13,500 BTU for its balanced performance, reliability, and owner satisfaction. The runner-up is the Coleman Mach 15 for those needing maximum cooling capacity for larger trailers. Choose based on your trailer size, power availability, and budget.
More Towing Guides
Video Guide
Video: Related tutorial from YouTube