Top Campervan Air Conditioning Units to Stay Cool This Summer

Want to stay cool in your campervan? Here are our top picks for the best air conditioners for van life.

man on the roof of a campervan with an AC unit

The summer months are seeing heat wave after heat wave in the U.S., making it really hard to stay cool in our Sprinter van. We’ve mostly been beating the heat by driving to the coast, the mountains, or staying in family members’ air-conditioned guest rooms.

Some van lifers deal with hot temperatures by adding a campervan AC unit – either a rooftop unit or a portable air conditioner.

We’ve experimented with both a Zero Breeze portable air conditioner and a small Evapolar swamp cooler.

In this article, I’ll tell you about the best and most popular campervan AC units out there, and what I thought about the portable units I tried.

The Best Campervan Air Conditioners At a Glance

If you’re in a hurry, here are our top picks. You can scroll through the rest of the article for more detailed information on each unit, and air conditioners in general.

Best 120-Volt Rooftop
  • Description:
    • 99 lbs
    • 29 x 40 x 9.5″
    • 3,000 watts
Best 12-Volt Rooftop
  • Description:
    • 56 lbs
    • 26.6 x 15.5 x 6.5"
    • 1200 watts


Best Portable Compressor Unit
  • Description:
    • 16.5 lbs
    • 20 x 1 x 11″
    • 650 watts
Best Portable Swamp Cooler
  • Description:
    • 4 pounds
    • 5-10 degrees below ambient temperature
    • 12.5 watts
Best Window Mounted
  • Description:
    • 35 pounds
    • 5,000
    • 400 watts
Best Under Chassis
  • Description:

    45 pounds

    11,830 BTU/hour

    480 Watts


Best 120-Volt Rooftop
Description:
  • 99 lbs
  • 29 x 40 x 9.5″
  • 3,000 watts
Best 12-Volt Rooftop
Description:
  • 56 lbs
  • 26.6 x 15.5 x 6.5"
  • 1200 watts


Best Portable Compressor Unit
Description:
  • 16.5 lbs
  • 20 x 1 x 11″
  • 650 watts
Best Portable Swamp Cooler
Description:
  • 4 pounds
  • 5-10 degrees below ambient temperature
  • 12.5 watts
Best Window Mounted
Description:
  • 35 pounds
  • 5,000
  • 400 watts
Best Under Chassis
Description:

45 pounds

11,830 BTU/hour

480 Watts


Types of Campervan Air Conditioners

There are many different styles of air conditioners you can put in a campervan. What you choose depends on how much power you have via batteries or a shore power outlet, and how much cooling power you need.

Here is a quick overview:

Rooftop Compressor AC Units (120 volts and 12 volts)

Campervan with AC unit parked in the desert
Instagram/LivingWithoutWalls with a Dometic Penguin II on the roof

A compressor van AC unit sucks in hot air and cools it by using refrigerant. The cool air is blown back into your living space, and hot air is expelled outside. The Dometic Penguin II is a popular compressor unit that runs on 120 volts.

These best air conditioners for a camper van are typically non-ducted. Although they’re the best option for quickly lowering the temperature inside, the main drawback is how much power they’ll draw. They also add height to your campervan and some hang down into your van’s cab.

The added height is something that Katie and Joey (www.katieandjoeonthego.com), who have a Dometic RTX2000, would rethink in a future build – “The only thing we would potentially consider if we had to do it all over again would be an under-mounted AC unit only because it would give us more room for solar on the roof and make the van slightly less tall.”

Rooftop units come in either 120-volt AC or 12-volt DC. The AC air conditioners take tons of power and usually require a 30 or 50-amp shore power plug or generator.

Some rigs, like Storyteller Overland, have a robust enough electrical system to run an AC unit for 8 hours, but that requires significant money, labor, and effort to do on your own.A 12-volt air conditioner like the Nomadic Innovations X3 runs off your van’s lithium batteries and takes far less power. The downside is these units are way more expensive.

Portable Air Conditioners

Zero Breeze campervan AC unit on a table in a van
This woman is using a Zero Breeze AC unit

If you don’t want to put something heavy on your roof, you might opt for a portable air conditioner like we have. The downside is that these typically aren’t as powerful as their rooftop counterparts, and have to be stored when not in use.

These van AC units are easier to vent, more affordable, and often run on battery power.

Two portable air conditioners to check out are the Zero Breeze, which has a traditional compressor, or a swamp cooler like the EvaSmart.

Evaporative Coolers

An evaporative cooler is just a fancy name for a swamp cooler. These lower the ambient temperature in your van using water and a filter, and is a rather primitive technology. Swamp coolers work really well in dry climates, and not so well if there’s any humidity.

You’ll also need a lot of water to run an evaporative cooler, which can be a serious downside.

You can either get a rooftop evaporative cooler like the Fresair or a portable one like EvaPolar.

Window Air Conditioners

We’ve often seen window air conditioners on campervans when we’re out and about driving around. The benefit of these units is that they are cheap and have a fairly low power draw, around 400 watts. The main downside is that a window air conditioner has to be vented, and you’ll need to create tight framing around it so it will fit in your window.

Some people opt to put a window air conditioner down low near the floor, like in a bench seat and vent it out the side or bottom of the van.

Mini Split Cooling Unit

Mini-splits aren’t as common for cooling a campervan, but it has been done. These units come in two parts: an outdoor compressor/condenser and an indoor air blower for heating and cooling.

Mini-splits are efficient and don’t take up too much space, but is more complicated to install than other AC units mentioned in this article.

Check out this video of a mini split installation in a campervan:

Powering your Campervan Air Conditioner (120 vs 12v units)

Having sufficient solar and battery power to keep a campervan air conditioner running all night can be daunting. Of course, this is no issue if you plan on hooking up to a 3o or 50 amp shore power plug or if you carry around a 3000-watt generator.

But if you go off-grid like lots of van lifers and don’t want to deal with a generator, you’ll need a pretty beefy battery bank, even to run a 12-volt unit.

In some forums, van lifers recommend having at least 500-600 amp hours of lithium batteries to run the Dometic RTX 2000 12-volt air conditioner, plus at least 300 watts of solar. Having a DC to DC charger also helps – this uses your engine to recharge batteries when you drive.

Lithium batteries are important in this scenario as you can run them below 50% without damage, and they charge way faster than AGMs.

If you’re using a 120-volt air conditioner like the Dometic Penguin II, you’ll need even more power and a heftier inverter (at least 3,000 watts) to deal with the compressor startup surge. On one forum, a van lifer needed a 3,000 watt inverter and 1120 amp hours of lithium batteries to run a Dometic Penguin. If you factor in the price of all those batteries, it’s a very hefty expense.

One rule of thumb I read in the Sprinter Source Forum is to have at least 100 amp hours of lithium batteries per hour you would like to run your AC. So if you have 400 amp hours of batteries, you could run your 120-volt unit for 4 hours.

Of course, if you’re plugged into shore power or have a generator when you need AC, none of this is an issue at all.

You can keep your power draw to a minimum by running your AC just long enough to cool your van down, or using a portable unit like the Zero Breeze or EvaSmart, which uses way less power.

The Best AC (120 Volt) Air Conditioning Units for a Campervan

Campervan air conditioning units that run on 120-volts – the same outlet you find in a house – are much cheaper than their 12-volt counterparts. You’ll need to plug into shore power or use a generator to keep these running for any lengthy period of time. These are what you usually see mounted on the roofs of campervan RVs sold by Winnebago, Airstream and Storyteller Overland.

Most Low Profile
Dometic Penguin II

Dometic is a big name when it comes to campervan air conditioners, and the Penguin II is one of the company's most popular models.

  • Weight: 101 pounds
  • Dimensions: 11.25 x 40.5 x 29”
  • Cooling capacity: 13,500 BTU/hour
  • Power draw:  1,620 Watts
  • Power source: 115V AC


This Dometic Penguin II best air conditioner for a campervan has a low profile – only adding 9.5 inches to your van’s roofline – so you won’t have to worry about drag affecting your fuel economy.

In fact, we think this van AC unit actually looks pretty cool and will enhance any campervan’s aesthetic!

Although the Penguin II is pretty heavy, it’s fairly easy to install and comes with manual, electronic, and wall thermostat controls.

One of the best things about this best campervan air conditioner is its use of R410 refrigerant, an eco-friendly option that releases heat more efficiently than other AC units.

The Penguin II has a 3-speed blower, and although it isn’t the quietest of van air conditioners, it’ll definitely do the job of cooling down your van on the hottest days, thanks to its 11,000 BTU/hour cooling capacity.

One van lifer I spoke to on Instagram, Graeme (@nomadnom0re), said, “I mostly use my Dometic Penguin when hooked up to shore power. Otherwise, an EcoFlow portable power station could run the air conditioner for 3-4 hours, enough to cool down my Sprinter. I only used the AC unit in dire situations, when it’s way too hot to sleep.”

Pros:

  • Attractive, compact design
  • Produces minimal drag
  • 2 year warranty

Cons:

  • Can be quite noisy
  • Doesn’t come with instructions
Most Powerful
Coleman-Mach 15

The Coleman Mach 15 is the most powerful AC unit for a campervan. This awesome air conditioner will always perform, no matter how hot it is outside.

Weight: 90 pounds

Cooling capacity: 15,000 BTU/hour

Power draw: 1,800 Watts

Power source: 115V AC

This Coleman Mach 15 best air conditioner for a campervan features an impressive 1/3 horsepower fan that blows cool air at an incredible 325 cubic feet per minute.

Best of all, the unit is really quiet, even when the fan is on full speed.

The Coleman Mach 15 also features a heating element, and its rugged construction, with all copper tubing, gas-flux brazed joints, and a sealed shaft to protect it from the elements means this campervan AC unit will stand the test of time.

Although the Mach 15 campervan air conditioner weighs less than similar units, installation can be quite tricky, and you’ll need at least 2 people and a few hours to get the job done.

This van AC unit is designed for ducted systems but comes with an adaptor for non-ducted setup, like what you’d have in a campervan.

Pros:

  • Relatively low power draw
  • Durable design
  • Doubles as a heater

Cons:

  • Installation can be tricky
  • On the pricey side
Most Lightweight
Dometic Brisk Evolution II

Dometic is a super-reliable and trusted company that has been working with NASA for years to help improve its air conditioning systems. This makes the Dometic a clear pick for the best air conditioner for a camper van.

Weight: 77 pounds

Cooling capacity: 13,500 BTU/hour

Power draw: 1,450 Watts

Power source: 115V AC

The Dometic Brisk Evolution II is a sturdy, lightweight and affordable campervan air conditioner that uses aircraft-grade parts, and is really made to last.

This best air conditioner for a campervan is easy to install and comes with a gasket that fits a standard 14×14 opening.

The Dometic Brisk II is one of the quieter units on our list, thanks to its vibration-reducing technology.

The Dometic Brisk II has a 3-speed blower, washable filter, and a remote control, so you don’t even have to get out of bed if you need to adjust the temperature!

Pros:

  • Runs quiet
  • Sturdy, lightweight design
  • Easy to install

Cons:

  • Wires are short
  • Reports of faulty evaporator coils

The Best 12-Volt Rooftop Campervan Air Conditioning Units

12-volt campervan air conditioners run on the pricey side, but run off batteries charged via your electrical system. You’ll need a significant solar system and battery bank to run these units off-grid, but it is possible. Many 12-volt units weigh less than their 120-volt counterparts. Here are several options out there.

Nomadic Innovations X3 12V Air Conditioner

The Nomadic Cooling AC units are the only 12-volt air conditioners that you can use off-grid.

  • Weight: 56 pounds
  • Dimensions: 26.6 x 15.5 x 6.5"
  • Power draw: 1200 watts
  • Power source: 12-volt

The Nomadic Innovations X3 campervan air conditioning unit comes with a hefty price tag, but that’s what you get for a truly off-grid air conditioner that runs off your van’s batteries, preferably lithium.

The Nomadic Innovations X3 fits into a standard 14×14 opening and runs on real refrigerant.

This campervan AC unit comes with both Eco Mode and Max Mode depending on the outdoor temperature. The default is Eco Mode and is preferred up to 85 degrees outside. You can use Maxl Mode for short bursts to really cool your van down on a hot day. Max Mode takes a lot of amps so it isn’t sustainable for the long term.

The Nomadic Innovations X3 comes with a pressure alarm, high/lower voltage alarm, motor over-current and motor temperature protection. 

You’ll need 4-6 lithium batteries to run the Nomadic Cooling unit, as well as a robust solar system.

Ricki Hoffman (@rickiontheroad) uses this A/C unit in her converted Ford Transit campervan. In regards to her experience with it, she says, “Overall, it’s a great unit. I like the 360 swivel of the vents and its low profile. It also comes with a remote!”

She lives in her van full-time with her dog and uses the A/C often: “When it gets above 80, I have to turn it on, and when I’m leaving my dog in my van, I set it to 70, which helps keep the van at a constant temp. I’d say I use it 3-4 times a week.”

The only con Ricki has found with this unit is the power draw – “As far as the biggest con, it’s just the energy draw when using it in full power.”

Pros:

  • Works off-grid
  • Real refrigerant
  • Fits into standard 14×14 opening

Cons:

  • Very expensive
  • High power draw
Dometic CoolAir 2000 RTX

This awesome 12-volt unit from Dometic is efficient and compact, making it a great choice for off-grid cooling.

Weight: 72.6 pounds

Dimensions: 34 x 12 x 25"

Cooling capacity: 6,824 BTU/hour

Power draw: 220-700 Watts

Power source: 12-volt DC

The Dometic RTX2000 has been around for over 10 years in Europe, and it’s finally available in North America! 

This might just be the best camper van air conditioner for living off-grid, thanks to its remarkably low power consumption. This is achieved through the use of a variable-speed inverted compressor which provides awesome cooling performance and super-efficient and quiet operation. 

When it’s running in eco mode, the Dometic RTX2000 only draws around 19 amps, which means a lot when you’re running it off your van batteries. There’s also a turbo mode for quick cooling in short blasts. This camper van air conditioner comes with everything you need for installation, plus a neat little remote control.

the roof of a van with a 12-volt dometic AC unit
Photo Credit: @keithandhannah

The BTUs on this unit are lower than some of the others on our list, so it will take longer to cool your campervan. However, its low power draw makes it a popular choice among van lifers.

Keith and Hannah (@keithandhannahh) live full-time in their self-converted Sprinter van, and since they’re spending an extended time in Florida, they must have an efficient A/C unit. They said, “In Florida, we use it 24/7, but prior to being in Florida, we only used it a couple hours out of the day, maybe once or twice when it was above 90 outside, depending on where we were. We would definitely buy it again and always recommend it to anyone who’s looking for a 12v A/C.”

They installed the RTX2000 themselves and said, “The installation was very straightforward, not much more difficult than a Maxxair fan aside from it being heavier.”

Rachel (@trioinavan) lives in her RAM ProMaster conversion with her two dogs and uses the RTX2000 while traveling around the U.S. and Canada. She likes how it “runs on 12V and uses surprisingly little power. I’ve made sure to stay in campgrounds during the Alberta heatwave this week, though, so we could run it 24/7 without worrying about battery levels.”

The Dometic RTX ac unit on the roof of a campervan
Photo Credit: @trioinavan


Katie and Joey (www.katieandjoeonthego.com) claim that the Dometic RTX2000 has been “one of our best purchases” and mention it “does a fantastic job keeping the van cool (even when it is 100+ degrees outside)!”

In terms of the benefits, they said, “It is pretty energy efficient. If we run it for 10 hours straight it only uses about 20% of our house batteries. We use it basically every night we sleep in the van. If we are working in the van during the day, we definitely have it going… it’s surprising how hot the inside of the van can get even on a mild day.”

For cons, Katie and Joey have only found a handful: “A big con for it is that the display does not turn off – so it’ll have the temperature and settings glowing at all times, which is super annoying at night since we put it right over the bed. Another con would be it doesn’t have a fan-only setting, which would be nice when we don’t need a lot of cooling but would like some airflow. The remote also doesn’t work very well – you have to be pointed just perfectly for it to work, so we just keep the remote in a cabinet. Finally, the unit isn’t quiet, especially at full blast.”

To install the unit, they decided to hire help: “The install was relatively straightforward, but it was a 2-day process (from cutting the hole to waiting for sealants and stuff to dry.) The unit is heavy and large, so it was a lot to get it lifted onto the roof. We ordered spacers from a third-party website that lifted the unit a bit. That made it so it would be flush with our ceiling and not stick way down into the van. This didn’t necessarily make the installation harder, it just modified it a little. If we didn’t have the spacers, the unit would’ve been like 8 inches further into the van, which is crazy.”

Pros:

  • Ideal for off-grid use
  • Very quiet
  • Turbo cooling mode

Cons:

  • Relatively low cooling capacity
  • Expensive
B-Cool 9000 Battery Powered Air Conditioner

The B-Cool 9000 RM is a super-efficient solution to staying cool while off-grid. Plus, its low profile means you won't notice much of a difference in your van's fuel economy.

Weight: 83.75 pounds

Dimensions: 37.8 x 28.35 x 6.5"

Cooling capacity: 10,230 BTU/hour

Power draw: 600-840 Watts

Power source: 12-volt DC

The B-Cool 9000 RM doesn’t come cheap, but it’ll definitely be worth the investment if you’re planning on spending a lot of time off-grid in hot weather. 

This 12-volt camper van air conditioner’s low power draw means you can run it off your van’s batteries. That said, it’ll work best if you’re using deep-cycle lithium batteries. The B-Cool 9000 RM comes with a wiring harness and waterproof gasket for easy installation. It also comes with a remote control for those lazy afternoons! 

Cam Ledrew (@camledrew) uses this A/C unit in his DIY Sprinter van with his girlfriend, Nikola, and their dog Jasper. He says, “We built our van with AC, but we honestly only have used it a handful of times. Mainly in Savannah and Charleston when it was muggy and warm. Other than that, we traveled with the weather.”

Although this camper van air conditioner doesn’t offer the highest cooling capacity, it’s certainly powerful enough to keep you feeling comfortable.

Pros:

  • Works off-grid
  • Easy to install
  • Two year warranty

Cons:

  • Expensive
  • Not the highest cooling capacity
Mabru AC Unit

This Mabru rooftop unit is incredibly efficient and packs a mighty punch. You'll get a cooling capacity of up to 12,000 BTU/hour from this 12-volt van air conditioner!

Weight: 59 pounds

Dimensions: 38.2 x 33.8 x 6.5"

Cooling capacity: 12,000 BTU/hour

Power draw: 380-750 Watts

Power source: 12-volt DC

If you can afford to invest in the Mabru RV 12000, you’ll be able to stay cool in your van no matter how long you decide to stay off-grid. This 12-volt, roof-mounted van air conditioner is sleek and streamlined, and works really quickly to cool down your van. 

Although Mabru is relatively new to the RV and van air conditioner market, they’ve been developing cooling systems for boats and yachts for years; so they really know what they’re doing. Thanks to its super-low power draw, you’ll be able to run this unit off your lithium batteries for hours. 

The RV 12000 has three fan speeds and three modes, including an eco mode. The only downside to the RV 12000 is that it doesn’t fit into a standard 14″ x 14″ roof opening and is reportedly quite difficult to install.

Pros:

  • Huge cooling capacity
  • Super-efficient
  • Streamlined design

Cons:

  • Difficult to install
  • Substantial investment
Swamp Cooler
Fresair Van Conversion Kit Swamp Cooler

This best air conditioner for a campervan runs on water, so it's an eco-friendly option, and it also uses very little power.

Weight: 25 pounds

Dimensions: 3.7 x 33 x 25"

Cooling capacity: 10,230 BTU/hour

Power draw: 480-840 Watts

Power source: 12V DC

One of the biggest concerns when using an evaporative cooler as a campervan air conditioner is that it’ll create a lot of moisture, which could lead to an uncomfortable environment, as well as potential mold and mildew.

The Fresair van conversion cooler combats this by using a state-of-the-art filter that’s anti-bacterial, anti-fungal, and allows the Fresair to produce cool, dry air.

This van AC unit runs on water, so it’s an eco-friendly option, and it also uses very little power.

The unit has awesome adjustable ceiling vents and comes with a dedicated 18L water reservoir.

Although the manufacturer claims that the Fresair can drop the air temperature by 40 degrees, there’s no getting away from the fact that this is an evaporative cooler, so it’ll only be really effective in very low-humidity environments.

Pros:

  • Lightweight and easy to install
  • Low power draw
  • Eco-friendly

Cons:

  • Very expensive
  • Only effective in dry environments

Here’s a chart from Fresair’s website to show you how well the unit will work relative to humidity.

Best Under Chassis
Cruise N Comfort Mini Split

Designed specifically with campervans in mind, this is the best air conditioner for anyone looking for a 12V option that doesn’t require them to cut a hole in the roof of their rig.

Weight: 45 pounds

Dimensions: 22 x 13 x 10”

Cooling capacity: 11,830 BTU/hour

Power draw: 480 Watts

Power source: 12V, 24V, or 48V


Some van lifers or RVers choose not to get a 12V A/C unit simply because they don’t want to cut a hole in their roof as many of these models require.

The Cruise N Comfort is a compact and lightweight 12V unit that can be installed outside or inside your rig. They have been manufacturing the Heavy Duty (HD) series since 2010, using the same stainless steel components and hardware they used to develop MES Marine units for United States Navy and Army patrol boats, so you know these units are built to last!

This campervan AC unit is extremely efficient because it uses an Eco Mode variable compressor and runs off of batteries, reducing the draw from the compressor. This makes it one of the best air conditioners for extended off-grid use.

The quiet noise level of this air conditioner is another perk. It’s available in 12V, 24V, or 48V units.

Pros:

  • Extremely efficient
  • Good for extended off-grid use
  • Minimal noise

Cons:

  • Expensive
  • Professional install recommended for mounting onto your rig

Portable Air Conditioners for a Campervan

If you don’t like the concept of putting a heavy air conditioner on top of your campervan like us, you might want to consider a portable unit.

The Zero Breeze is a lightweight, small compressor AC unit that you can set up anywhere in your van. However, it’s low BTU rating means it won’t cool your entire van. You’ll have to position the unit so it blows directly on your body, or you can hang a sheet to separate your sleeping area from your living area.

Although the Zero Breeze does require ventilation, the small exhaust pipe could easily be fit through a window. We tried this out by venting the Zero Breeze through the two back windows of our Sprinter van, stuffing clothes around the hoses to create a seal. It worked, but the exhaust pipe gets very hot.

You can also drill holes in your van to create a more permanent mounting system.

The Zero Breeze is definitely on the expensive side, but if you’re looking for an innovative solution to your van air conditioner needs, this could be the unit for you!

The ideal cooling area for a Zero Breeze is 24-40 square feet, perfect for a van.

Pros:

  • Small
  • Battery-powered
  • Impressive cooling capacity

Cons:

  • Expensive
  • Might struggle to cool larger spaces
  • Heavy for a portable unit
  • Loud
EcoFlow Wave 2 Portable Air Conditioner/Heater

A compact, battery-operated two-in-one air conditioner and heater, the EcoFlow is the best air conditioner for anyone looking for a portable option for occasional off-grid use.

Weight: 32 pounds

Dimensions: 20.39 x 11.69 x 13.22”

Cooling capacity: 5,100 BTU/hour

Power draw: 500 Watts

Power source: Battery, 12V, or 24V



The EcoFlow Wave 2 is a heat pump that is both an air conditioner and a heater. This unit works best for small or medium-sized vans or RVs due to its relatively low cooling capacity of 5,100 BTU.

This unit can charge via an AC outlet, power station, car outlet, or solar panel, making it convenient to charge however works best for you.

Weighing only 32 pounds, the EcoFlow Wave 2 is portable and easy to reposition wherever you need cool air. You can keep it by your workstation during the day and move it closer to your bed at night.

We also like that you can purchase a Terrawagon in-window venting system for this portable AC unit:

ac vents coming out a campervan window
Venting system for AC unit

One con is the unit can only run for 8 hours until it needs another charge, meaning this is a unit you will probably only want to run for short increments at a time. If you don’t need the A/C running constantly, though, it’s a good option.

Pros:

  • Lightweight and portable
  • Modes for heating and cooling
  • Battery operated

Cons:

  • Low cooling capacity
  • 8-hour battery life
Portable Swamp Cooler
EvaPolar Swamp Cooler

The EvaPolar is what we've been using in our van. It's small and creates a cool breeze.

Weight: 4 pounds

Dimensions: 8.14 x 8.54 x 7.24"

Cooling capacity: 340-1,360 BTU/hour

Power draw: 12.5 Watts

Power source: Battery, laptop, USB-C, or 5V

The EvaSmart Evapolar evaporative cooler has been just what we need in our van. The unit is tiny, draws barely any power, and is great for sleeping or working. As it’s very small, this unit is meant as a personal air conditioner, and only works if the fan is pointed directly on you.

I often use this cooler when sitting at the table working in the van, and Tom uses it during hot nights to blow cold air over his body.

If you don’t have a robust solar or battery system in your van, this unit is for you. Only drawing 12.5 watts, it can run off a cigarette lighter for a long time.

The main downside of the Evapolar is that it is a swamp cooler, won’t work in humid environments and needs a filter replacement every six months.

Window AC Units for Van Life

Some van lifers choose to go with a window mounted air conditioner for van life. I’ve typically seen it either in the back door or under a bench vented outside. You will have to do some construction to get one of these permanently mounted in your van.

Van lifers like these units as they are very affordable and have a low amp draw compared to some other air conditioners for a campervan.

Window Mounted
Frigidaire Air Conditioner
  • Weight: 35 pounds
  • BTUS: 5,000
  • Dimensions: 15.25"D x 16"W x 12"H
  • Power Draw: 400 watts, or 3 amps

I’ve seen the Frigidaire recommended quite often in van life groups, mostly because it needs a very low amount of power. This AC unit only uses about 400 watts to run, but keep in mind that startup wattage can run 2 or 3 times that amount. This unit is also way more affordable then roof-mounted units or the portable Zero Breeze.

At 5,000 BTUs, this isn’t the most powerful air conditioner you can get, but should be enough to sufficiently cool down the bed area of your van for sleeping, or the cabin for daytime use.

You’ll need a solar system or a portable power station like the Jackery 1000 to run a window ac unit like the Frigidaire.

There are tons of videos on YouTube about window air conditioner installation on campervans. Check out this one:

Why We Aren’t Using a Rooftop Campervan AC Unit

woman standing in front of a sprinter van
Me standing in front of my already-tall Sprinter van

Many of the Class B RVs out there like the Winnebago Revel and Storyteller Overland use rooftop AC units made by companies like Dometic and Coleman. The air conditioners are powerful, run off 120 volts and are HEAVY.

The weight factor is the main reason why we didn’t want to go with a rooftop unit. Most of them are between 80 and 100 pounds, and we already have a 100-pound Aluminess rack plus gear on our Sprinter van’s roof.

Adding another heavy item just doesn’t make sense for us as we love to boondock and go off-roading. As most overlanders know, a top-heavy rig doesn’t make for the best off-road vehicle.

Plus, many of these units hang down into a campervan’s living space, which can lower the ceiling over the bed. We also didn’t like that idea.

This is the reason why we tried two portable air conditioners this summer.

Our Experience: The Portable Air Conditioner We Like Best

Woman sitting in front of a campervan AC unit
Me with the EvaPolar unit

On a really hot night in the Columbia River Gorge, we decided to try our new Zero Breeze AC unit. This is a small compressor air conditioner that requires two vent lines: one to suck in outside air to cool our campervan interior, and one to exhaust hot air.

Tom jimmy-rigged the unit to vent out our van’s two back windows, and we set the Zero Breeze to maximum cooling.

While the air coming out the front of the unit was cold, it just wasn’t powerful enough to cool off our entire van. Our conclusion is that the Zero Breeze only works if it’s blowing directly on you, or if you section off parts of your van by hanging sheets or curtains.

We were a little bummed the unit wasn’t stronger for the price and amount of effort to set up.

Next, we tried EvaPolar EvaSmart portable swamp cooler. This tiny unit is affordable, super easy to set up (just add water and plug in!) and shoots out cold air. It also is an air purifier and humidifier if you’re in a dry climate.

One night, we propped the EvaPolar so the fan hit the bed, and we slept really well!

The main drawback of the swamp cooler is that it won’t work well in humid climates, but we haven’t tested that yet.

Due to its ease of use and low power draw, we’d recommend the EvaPolar EvaSmart swamp cooler over the Zero Breeze at this point, although our opinion could change in the future.

Campervan Air Conditioner BTU Ratings Explained

When you’re looking for the best air conditioner for a campervan, you’ll quickly notice that each unit’s BTU rating is prominently displayed. Why does this matter, and what does it mean?

BTU stands for British Thermal Units, and measures the heat transfer capacity of the AC.

campervan air conditioner on top of tan Sprinter van
Low profile campervan AC unit. Photo: Instagram/LivingWithoutWalls

This is defined as the amount of heat needed to raise the temperature of one pound of water by one degree, Fahrenheit.

Essentially, the higher the number, the quicker and more efficiently the van AC unit can cool down the space.

In practice, the efficiency of the best air conditioner for a campervan depends on factors like the size of the space, how well-insulated it is, and the outside temperature.

Generally speaking, though, a BTU rating of 10,000 to 13,000 will keep your van nice and cool on the spiciest of days.

How to Keep Your Campervan Cool When Temperatures Begin to Rise

Whether or not you’re using the best air conditioner for a camper van there are quite a few things you can do to make things more comfortable in your van.

Some of these may appear obvious, and some might seem superfluous, but when the heat is on, small changes can make all the difference!

Curtains/Window Coverings

Our van window covers by Van Made Gear

Apart from giving you privacy, using reflective window coverings and curtains in your van can make a huge difference, sometimes even lowering the temperature inside by 10 or 20 degrees.

We bought insulated window covers from Van Made Gear which we just love. When I put my hand on the sunny side of the cover, it’s incredible just how hot it is.

Vented Windows

If you’re building out a van, you’ll definitely want to consider installing vented windows. There are several options available, including sliding windows, or those that open with a crank.

We installed windows in our Sprinter from Wilderness vans, but Arctic Tern awning-style windows are a popular option.

Using a mesh screen will keep out unwanted creepy-crawlies, and you’ll be able to create valuable airflow, especially if you also install a vent fan.

Roof Fans/Portable Fans

Although a fan won’t be able to cool the interior of your van on a hot day, it can bring the temperature down to match the temperature outside.

The two most popular roof fans for van life are the Maxxair and Fan-Tastic, and either one will give you much-needed air circulation. A small, USB-powered fan can also make a lot of difference and is a cheap, space-saving way to get the air moving inside your van.

Insulation

Insulating your camper van is super-important, not just to help keep the heat inside during the winter, but also to maintain a comfortable environment during the summer, especially if you’re using a van AC unit.

We used wool insulation from Havelock wool.

An Awning

An awning can prevent the side of your van from heating up too much when you’re parked in the sun. A couple of popular awnings for vans include the Fiamma awning and the Moonshade portable awning.

Shade

This might seem like a no-brainer, but parking your van in the shade can make a big difference on the hottest of days.

Parking in the shade will keep the sun’s rays at bay and prevent the temperature inside your van from becoming unbearable.

Drive Somewhere Cooler

Don’t forget that you’re free to leave! If you’re suffering in the heat, there will often be somewhere not too far away that is going to be cooler.

Driving to the coast can often be the way too go, and nighttime temperatures at higher elevations are usually much more pleasant.

Don’t forget showers! A good shower can cool you right off in the hot summer. Check out 9 Van Life Shower Ideas for Staying Clean On the Road and 11 ways to Find Public Showers When Living in a Campervan.

Conclusion On The Best Air Conditioners For A Campervan

Everyone has different tolerance levels when it comes to heat, and while some will be loving the feel of a hot day, others will be reaching for the air conditioner on switch.

If you’re traveling with pets or children, a campervan AC unit is a must, especially during the hottest months.

Whether you’re using a powerful rooftop air conditioner, or a small, portable unit, taking the edge off the heat will make living in your van much more bearable.

We hope you’ve found this article helpful. Feel free to leave any questions in the comments section below!

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3 Comments

  1. Walter E. Bennett says:

    I was thinking of a portable air conditioner that is very flexible. Which is very easy to use and maintain. The portable campervan air conditioner will be able to fulfill all my purposes. Today’s modern air conditioners come with energy-saving features that reduce our carbon footprint, especially when compared to older models. The energy efficiency of an air conditioner is determined by the seasonal energy efficiency ratio, which measures how well a unit will perform at a certain outdoor temperature.

  2. Kevin Goslant says:

    Why not use a box fan and spray yourself with water? Basically a swamp cooler, and much more efficient.

  3. Fairfax shopper says:

    I would say based on actually using these units here are the best. 120 V go for the Recpro it’s only $1149 and 9500 BTUs. If you want the best 12 V unit at the best price also available in 1224 or 48 V go with Velit for $1600.

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