The Ultimate RV Air Conditioner Buying Guide

As the sun beats down on your RV, transforming it into a mobile sauna, the importance of a reliable air conditioner becomes more than just a luxury — it’s a lifeline. A well-functioning RV air conditioner can be the difference between a comfortable interior and a sweaty, sleepless night. In this RV air conditioner buying guide, we'll equip you with everything you need to know to make an informed decision, from understanding the different types of RV AC units to installation considerations and FAQs. 

1. Benefits of Having an RV AC System
2. Exploring Different Types of RV AC Units
3. Understanding the Components of an RV Air Conditioning System
4. Determining Cooling Power Requirements
5. Single-Zone vs. Multi-Zone Systems
6. Comparing Features
7. Retrofitting Options
8. Installation Considerations  
9. FAQs About RV Air Conditioners 

Before we dive into the nitty-gritty details, let's quickly highlight some of the benefits of having an RV air conditioner. First and foremost, it's all about comfort. No matter where your travels take you, you can always retreat to a cool and refreshing oasis inside your RV. Additionally, a properly functioning AC system can help improve air quality by filtering out dust, pollen and other allergens, creating a healthier environment for you and your loved ones. Let's not forget about sleep — with a reliable AC unit, you can rest easy even on those hot summer nights. 

RV air conditioners come in various shapes and sizes, each with its own set of pros and cons. The most common types include rooftop units, wall-mounted or side-mount units, under-bench units and ducted versus ductless (or non-ducted) systems. Depending on your RV's layout and your personal preferences, you'll want to carefully consider which type of AC unit best suits your needs. 

RV air conditioning systems consist of four primary components, all essential for a complete and functional cooling system for your rig. These components can be purchased individually or as complete kits, and additional parts can be acquired to supplement existing systems. For the purposes of this guide, we’ll specifically look at the components of a rooftop unit. 

The RV rooftop AC unit serves as the central module responsible for cooling the air inside your RV. Equipped with a condenser, fans and other essential components, it operates using power from your RV's electrical system. Typically mounted on your RV's roof, this unit can also be installed using alternative mounting options to suit your preferences. 

The air distribution box, or ADB, is mounted on the ceiling and acts as the conduit for distributing freshly cooled air throughout your RV. Connected to the rooftop RV AC unit via an opening in the roof, the ADB ceiling assembly includes an air filter and can have multiple fan speeds to enhance air circulation and distribution efficiency. 

Functioning as the system's brain, the AC controller communicates with all other components to regulate interior temperatures effectively. By receiving input from the thermostat, the controller instructs the rooftop air conditioner and ADB on the amount of cool air required to maintain the desired temperature settings inside the RV. This ensures the AC system's optimal performance and energy efficiency. 

The thermostat serves as the user interface and control panel for your RV AC system. It has a digital display, interactive buttons and a range of features that allow you to adjust settings and monitor temperatures inside your RV accurately. Whether you prefer basic functionality or advanced features, the thermostat provides convenient control over your cooling system. 

With these four components working together seamlessly, you can enjoy a comfortable and refreshing environment inside your RV. Whether you're retrofitting an existing system or installing a new one, understanding these components is crucial for achieving efficient and reliable cooling performance. 

One of the most critical factors to consider when choosing an RV air conditioner is its cooling power, measured in BTUs (British Thermal Units). The size of your RV and its insulation will dictate how many BTUs you need to effectively cool the space. It's essential to ensure that your RV's electrical system can support the power requirements of your chosen AC unit to avoid any potential issues down the road.  

Another decision you'll need to make is whether you need a single-zone or multi-zone AC system. Single-zone systems cool the entire RV with a single thermostat, while multi-zone systems allow you to control the temperature in different areas independently. Depending on your RV's layout and your specific cooling needs, one option may be more suitable than the other. 

When comparing different RV air conditioner models, there are several key features to consider. These include capacity, efficiency ratings, noise levels, aerodynamics, road readiness, unit size and color options. Additionally, some units have advanced features like built-in heat strips or programmable thermostats, which can enhance your overall camping experience.

• Capacity: Capacity refers to the AC unit's cooling power, measured in BTUs. Higher BTUs mean more cooling capacity. Choosing the right capacity ensures efficient cooling for your specific RV size. Too little, and you’ll swelter; too much, and you waste energy. 
• Efficiency Ratings: Efficiency ratings indicate how well the AC converts electricity into cooling. Look for Energy Star ratings. Efficient units save energy, reduce costs and minimize your carbon footprint. 
• Noise Levels: Noise levels are measured in decibels (dB). Quieter units create a more peaceful environment, which won’t interrupt your conversation or disturb your sleep. 
• Aerodynamics: Aerodynamic designs reduce wind resistance while driving. Better aerodynamics improve fuel efficiency and stability on the road. 
• Road Readiness: Some units are built to withstand vibrations and outdoor exposure during travel. Since durability matters, your AC should be able to handle bumpy roads and weather extremes. 
• Unit Size: Consider the physical dimensions of the AC unit, especially for rooftop installations. Proper sizing ensures a snug fit without scraping bridges or low-hanging branches. 
• Color Options: Some manufacturers offer color choices to match your RV’s aesthetics because style matters — even in the great outdoors! 
• Advanced Features: Some advanced features of RV AC units elevate comfort and functionality, ensuring a pleasant experience regardless of the weather conditions. Built-in heat strips extend usability into colder seasons, providing warmth when needed. Programmable thermostats allow for precise temperature control, catering to individual preferences and maximizing cooling comfort. Dehumidification modes effectively regulate humidity levels within the RV, creating a more enjoyable environment by preventing excess moisture buildup. Additionally, air filters enhance air quality by trapping dust and allergens, promoting a healthier indoor atmosphere for occupants.  

If you're looking to upgrade your RV's existing air conditioning system, you'll be pleased to know that there are retrofitting and conversion options available for seamless integration. Whether you’re replacing an old unit or installing a new one for the first time, choosing a model compatible with your RV’s specifications and layout is essential. 

When it comes to installing your new RV air conditioner, you'll need to decide whether to tackle the job yourself or hire a professional. While DIY installation can save you money, it requires the right tools and experience to ensure a successful outcome. On the other hand, hiring a professional installer can provide peace of mind, knowing that the job is done correctly. 

By now, you should have a solid understanding of what to look for when choosing a camper air conditioner. Armed with this knowledge, you can confidently select the perfect cooling solution for your next adventure.  
 
To wrap up our guide, let's address some common questions about RV air conditioners: 

The best AC unit for a small RV depends on factors such as the size of the RV, insulation and personal preferences. However, some popular options for small RVs include compact rooftop units or wall-mounted / side-mount units with lower BTU ratings, which are designed to cool smaller spaces efficiently. 

Yes, you can leave an RV air conditioner on for extended periods, but you must consider power consumption and strain on your RV's electrical system. It's generally recommended to use the AC intermittently to avoid overworking the system and to conserve energy when possible. 

The most powerful RV air conditioners can have BTU ratings ranging from 13,500 to 15,000 or higher. Among the most powerful models are rooftop units designed for larger RVs or those traveling in hot climates. Matching the AC’s power output to your RV’s size and cooling needs is essential for optimal performance. 

Portable AC units can cool an RV, but their effectiveness may vary depending on factors such as the unit's BTU rating, the size of the RV, insulation and ambient temperature. While portable units offer flexibility in placement and can be used in various settings, they may not provide as highly efficient cooling as rooftop or built-in AC systems designed specifically for RVs. 

RV air conditioners can consume a significant amount of electricity, especially when running at full capacity. It's essential to monitor power consumption and manage energy usage to avoid draining the RV's batteries or overloading the electrical system, especially when boondocking or using generator power.