Your RV roof air conditioner is one of the most essential appliances for climate control, especially if you camp in the spring or summer. It’s the reason most campers ultimately upgrade from tent camping to RVing. Whether you want to replace, add, or upgrade your RV air conditioner, we’re here to help.
Learn everything you need to know about RV air conditioners, from choosing the right size to ensuring you have all the correct parts.
Key Takeaways
- RV air conditioners come in several types: roof-mounted (ducted or non-ducted), window, and portable units. Each has pros and cons based on cooling power, installation, space, and efficiency.
- Choosing the right RV A/C depends on factors such as RV size, BTU rating, power source, brand compatibility, thermostat type, and desired extra features (e.g., heat pump, soft start, condensate pump, etc.).
- Top rooftop A/C models from Dometic, Furrion, Coleman-Mach, GE, and others offer varying cooling capacities, profiles, and features; proper generator sizing and optional A/C covers help optimize performance and longevity.
Types of RV Air Conditioners
The most popular type of air conditioner is an overhead RV A/C installed on the roof. This type blows air directly into the RV or distributes it through a ducting system. In recent years, we’ve seen an emergence of window and wall-mounted units, especially in smaller RVs. While less common, portable RV air conditioners can also be found in modern RVs.
Need help determining which is best for you? Let’s review the best RV air conditioners by type.
RV Roof Air Conditioners
The most popular, and for good reason, RV roof air conditioners don’t take up any space inside the RV. They are the most effective at distributing air, especially in a ducted system. These units provide the most efficient cooling, and many can also deliver heat if you have a model with a heat pump or strip. Although leading the charts in performance, they also lead the charts in power draw and replacement cost.
| Pros | Cons |
| Powerful | Expensive to Replace |
| Don’t Take Up Interior Space | Large Power Draw |
| Heat Pump Option | Adds to Overall RV Height |
Ducted versus Non-Ducted RV A/C Units
There are two types of roof-mounted A/C units: ducted and non-ducted. In a ducted system, ducts run through the RV’s floor, walls, or ceiling, and vents deliver the air throughout the floor plan.
A non-ducted system has only one vent at the distribution box. Air blows straight down from the unit into the RV. Non-ducted systems are standard for small RVs, while ducted systems are common in larger RVs with multiple rooms.
Distribution boxes are usually specific to ducted or non-ducted RVs, so you’ll need to know which type you have before selecting one.
RV Window A/C Units
One issue with using an overhead air conditioner on a small camper is the potential to freeze you. Most manufacturers consider a small RV air conditioner to be 13,500 BTU, which is too much for a small RV, even on the lowest setting. With a smaller RV, you also likely have a more limited power supply, and window units draw about half as much power as an overhead A/C, on average.
| Pros | Cons |
| Won’t Freeze You Out | Takes Up Wall Space |
| Smaller Power Demand | Unsightly |
| No Addition to RV Height | Less Efficient Cooling |
Portable RV Air Conditioners
A portable air conditioner is most likely used in an RV to supplement a roof or wall-mounted unit. Its downsides include reduced cooling capacity, added setup time, and reduced storage space. However, it also has positives, such as quiet operation and less strain on your wallet.
Portable air conditioners are also an option for RVs without an air conditioner or a temporary A/C replacement. The best part is that adding one does not require significant modifications, like cutting into the roof or walls.
| Pros | Cons |
| Easy Install | Poor Efficiency |
| Easy to Move Design | Requires Setup |
| Cost Effective | Takes Up Storage Space |
How To Choose an RV Air Conditioner
The choice of an RV air conditioner can be overwhelming. There is an endless list of options and plenty of compatibility concerns. Let’s go over some common deciding factors to help you make a suitable choice.
Brand
There are two schools of thought behind choosing the right RV air conditioner brand. The first is choosing the same brand you have now to ensure compatibility. The second is choosing a different brand, with the expectation that you may have to replace multiple components to ensure everything works together. It’s a good idea to pick one that offers a system with the features you need. Here are some of the top RV air conditioner brands:
Size (BTU Rating)
When most people talk about an RV air conditioner’s size, they refer to its BTU rating. British Thermal Units, also known as BTUs, are essentially a measure of power. The higher the BTU rating, the greater its cooling capacity. Most manufacturers offer a smaller 13,500 BTU RV air conditioner and a larger 15,000 BTU RV air conditioner. There are some oddball ratings as well, such as 11,000 BTU for smaller RVs.
Several factors, such as the size of the RV, insulation properties, and number of rooms, must be considered when choosing the correct size (AKA BTU rating) for your RV. We recommend sticking with the manufacturer’s suggestion, which you can get by calling the manufacturer directly with your vehicle identification number (VIN).
If your camper did not come with an air conditioner and you want to add one, you can use the general size chart below as an estimate.
| RV Length | BTU Requirement |
| <20 | 13,500 |
| 20-30 | 15,000 |
| >30 | 27,000-30,000 |
Manual or Electric
A manual system is controlled via the distribution box, so you must adjust settings directly on the ceiling or wall-mounted RV air conditioner. This may pose an issue if you’re shorter or have a high ceiling.
An electric system uses a wall-mounted thermostat for operation. Although most prefer a wall thermostat, manual systems are easier to install because you don’t have to run wires through the walls and ceiling.
Features
There are many features to consider, but not all brands offer the same options. It’s smart to select only what you need. Generally, the more features it has, the more expensive it will be. A few examples of standard features are listed below:
- Heat Pump – Provides extra heat in colder months. Works best above 40 degrees Fahrenheit.
- Heat Strip – Designed to remove the chill, it should not be a primary heat source.
- Soft Start – Reduces start-up energy demands, allowing for a smaller generator.
- Condensate Pump – Channels condensation away from the roof and out a drain tube.
- RV Air Conditioner Soft Starter – Reduces the amount of power needed to start your A/C. Great for boondocking.
Best RV Air Conditioner Models to Consider
Our top-rated RV air conditioners will help you find a reliable system to keep you cool this summer.
Dometic FreshJet 3 Series RV Air Conditioner
The most innovative rooftop air conditioner on the list is a Dometic RV air conditioner, the FreshJet 3. The FreshJet offers upgraded efficiency, quieter operation, and e-coated coils for added durability.
| Profile Height (in.) | Weight (lbs) | Rating (BTUs) |
| 13.8” | 64-66 | 13,500 or 15,000 |
Furrion Chill HE RV Roof Air Conditioner
The Furrion Chill is a highly efficient rooftop air conditioner with durable features like vibration protection and a thermal-insulated shroud.
| Profile Height (in.) | Weight (lbs) | Rating (BTUs) |
| 13.5” | 82-93 | 13,500 or 15,000 |
Coleman Mach Quiet Series 15 Air Conditioner
The Coleman Mach is one of the most tried-and-true RV rooftop air conditioners. This high-performance air conditioner offers superior cooling and unrivaled durability.
| Profile Height (in.) | Weight (lbs) | Rating (BTUs) |
| 13.8” | 83.5 | 15,000 |
Dometic Penguin II High-Capacity Air Conditioner
What’s unique about the Penguin is its low-profile design, which improves aerodynamics and helps cut down on fuel costs. Pair this with a high-performance motor for maximum cooling power, and you have an excellent rooftop RV air conditioner.
| Profile Height (in.) | Weight (lbs) | Rating (BTUs) |
| 11.25” | 101 | 13,500 |
GE R32 Deluxe RV Air Conditioner
The GE air conditioner is cost-effective and reliable. It has rubber grommets to reduce vibrations, a glossy shroud to increase aesthetics, and easy-to-maintain coils for cleaning.
| Profile Height (in.) | Weight (lbs) | Rating (BTUs) |
| 13.9” | 80 | 13,500 |
What Are the Different Rooftop Air Conditioner Components?
RV roof air conditioning systems are a collection of components that work together to deliver cool air throughout your camper. The main element is your roof-mounted unit, followed by the distribution box, a control module, and the thermostat. Some units come as a kit with all the needed items, whereas others require you to purchase them separately. Here’s how each component in the system functions:
The A/C Unit
The main component of an air conditioner for RV roofs is the unit itself. The unit contains all the internal air conditioning parts, such as the coils, condenser, compressor, etc.
Distribution Box
The distribution box is mounted inside the RV to the ceiling directly below the A/C unit. It distributes air throughout the RV through one or multiple vents.
Control Module
The control module is mounted to the distribution box or inside the unit. It controls all the settings, such as air speed and temperature. It is the system’s brain that communicates with the A/C unit, distribution box, and thermostat.
Thermostat
The thermostat tells the A/C unit when to turn on/off. It can be mounted on the wall (electric) or to the distribution box (manual).
Shroud
The shroud protects the internal components of the A/C unit. Typically constructed of polypropylene, these covers are durable and weather-resistant.
Air Filter
The air filter is installed inside the distribution box in front of the vent. It blocks allergens, such as dust, pollen, mold spores, and more, from entering the RV.
What Size Generator Do I Need for My Air Conditioner?
Generally, most 13,500 BTU RV air conditioners will require at least 3,500 starting watts, and 15,000 BTU RV air conditioners will need upwards of 4,000 starting watts.
When camping off-grid, there’s no access to shore power. Air conditioners draw too much power for your batteries, forcing you to use a portable RV generator. Unfortunately, generator sizing can be tricky. Due to space, weight, and fuel concerns, you’ll usually want to use a generator that is as small as possible.
Like generators, most air conditioners have running and starting wattage requirements. Starting watts represent how much power the unit requires on startup, and running watts represent how much power it needs to stay running. The starting watts can be almost double the running watts. An A/C soft start can reduce the power starting requirements.
Learn more in this generator sizing guide.
Do I Need An Air Conditioner Cover?
If you don’t have an RV cover, a rooftop air conditioner cover is noteworthy for protecting the assembly when your RV is in storage. Use an air conditioner cover to prevent dust, debris, moisture, and other potentially damaging substances from negatively impacting your vital components.
Use these additional resources to learn more, upgrade, or troubleshoot:
- Top RV Air Conditioner FAQs
- How To Improve A/C Efficiency
- RV Air Conditioner Maintenance Tips
- Why Is My RV AC Dripping Water Inside?
Let us know what RV air conditioner unit you prefer or if you have any questions in the comments below.
This is great information. I would like to know because I have two Dometic’s and one Coleman Mach in my destination camper why my kitchen Dometic and spare bedroom Colemen went out within a year of one another. The camper is only six years old. The kitchen AC is original and the spare bedroom is only four years old. I am pretty sure I know why but want to hear it from experts. The scenario. Camper AC usage prior to April 2025, 13 overall months. Half was not under a carport but the other half under a carport. April 2025, AC usage began with a single person residing in the destination camper with a cat and two adult huskies in NC. The huskies shed like crazy of course because they should be in AK and not NC. Or a normally colder state. Kitchen AC went out August of 2025. Looked at the blades and coils and looked like the AC was building a blanket out of dog hair. Did not clean it at the time and just told the person do not use the kitchen for now since there are two other ACs but make sure to take the filters out and replace them and I would do it once a month given the amount of dog hair. May 2026, Coleman Mach in spare bedroom begins to make same sounds as Dometic in Kitchen. Last week husband goes to check and was trying to turn the blades and had this sticky goo on his fingers. He stated is smelled like cherries. Again massive dog hair and it was worse because it also had the sticky goo. Discovered the person is using Renuzuit gel air fresheners throughout the camper. Explained you cannot do that and to stop. The coils also had a ton of goo and dog hair. Decided not to clean while person resides in the camper because chances are they will destroy the final AC in the unit. Put in portable until the move which will not be soon enough. They called a home repair place who said no its not possible for Renuzuit or dog hair to do that. Then told me to call the repair place and have them come out. Called this home AC repair place and inquired and I said did the person happen to mention it is a camper. As in an RV. No. Well. It is. Oh well I don’t know anything about repairing campers AC’s. Those are built differently from a home. I know. I have a giant Trane outside. Dometic and Coleman have stated is more than likely the cause of the failure but to know for sure a tech needs to come out. I am just hoping to get some input from those that work in the industry. Not that I am going to do anything to the tenant because they are broke that is why they are residing in the camper. They are moving here in the next few months thank the Lord. They have caused other damage.
Thanks for such an impressive detailed comment Tina!
I reached out to our Technical Service team to get their insights:
Mechanically speaking, if you are fairly handy, you should be able to utilize your immeasurable patience to carefully clean the inside and outside coils and fan blades, as well as the return air plenum and ceiling ductwork. A couple of drops of oil on the fan bushings and/or bearings would be a great idea. Then a deep clean of the RV (with the ACs off so they don’t get fouled up again) to get everything back to a healthy standard.
Remember that the dog hair, air freshener, and whatever else was going on in there didn’t just affect the ACs. It will infiltrate everything such as the fridge, furnace, floor ducts, cabinets, closets, and drawers. Let it air out for a few days following the deep clean and then give the ACs and any other appliances a full test run. Then repeat the testing a few times over the course of a week or so. RVs aren’t meant to be parked and lived in without regular maintenance, and the waste water system is maybe the most difficult to keep in good shape. You can also chemically treat and power flush the black and grey tanks, as well as perform a sanitation of the fresh water system with sodium hypochlorite (household bleach).
New ACs are very expensive, as is the labor to pay a technician to attempt a cleaning of the RV and everything in it. This is why a good first recommendation is to attempt the deep clean yourself.
The source of the oily, fruit smelling goo could be many things. Air freshener sprays, air wick style diffusers, vape pens, incense, and stovetop fruit reductions. No matter the source, it has to be removed. It’s definitely smart to wear rubber gloves and N95 style respirators during the cleanup.
Hope this helps!
I didn’t see any noise level ratings in decibels. It’s not the outside level that matters, rather it’s the inside that counts. Especially if the roof-top air conditioner is not ducted. I find it hard to believe that an air conditioner manufacturer can’t make a quiet roof-top unit, especially since there are home window units that are very quiet and have a capacity of 5,000 BTU to 10,000 BTU. For small travel trailers of 22 feet and shorter there is a market for a unit that actually cools and dehumidifies, and is QUIET.
These are some great points Rich!
In my experience, the air conditioner manufacturers are the best resource for finding decibel ratings on their specific products.
Hi my ac unit is damaged I am looking to replace the unit but I don’t know what unit to buy, I have a 2010 travel lite m-700 standard. Can you point me to the right one.
Hi Alexander!
I’d recommend contacting the Service Department at your local Camping World (https://rv.campingworld.com/rv-collision-renovation). They’ll likely need a make/model for the AC unit itself to help identify a compatible replacement, but could also provide a quote for the removal and replacement if you’re interested. Hope that helps!