Can You Put Air Conditioning in a Caravan? A Complete Guide

Jul 12, 2025

Yes, you can put air conditioning in a caravan—but it’s not as simple as slapping on a fan and hoping for the best. From power limits to roof weight woes, Caravan and Motorhome Air Conditioning takes planning. Curious if your setup can handle it? Keep reading—we’ve got you (and your sweat) covered.

Planning Your Caravan Air Conditioner: The Complete Checklist

Before choosing an air conditioning unit, there are a few things to check.

You’ll need to consider your caravan’s electrical system, overall size, insulation, and structure. These determine what type of air con you can install, whether it will run efficiently, and how well it cools your space.

Making the right choice early on will save you time, money, and frustration later.

Choosing the Right Type of Air Conditioner for Your Van

Caravan owners have several air conditioning options, each with its own pros and cons. It all depends on your available space, your cooling needs, and how much effort you’re willing to put into installation.

Here are the three main types to consider.

Dometic FreshJet caravan air conditioner installed on the roof of a vehicle, with trees and sky in the background.

Rooftop Air Conditioners: Powerful and Space-Saving

Roof-mounted units are a top pick for many caravan owners. They offer strong cooling performance while saving precious interior space.

Well-known brands like Dometic and Truma produce compact models suitable for a variety of caravan sizes.

If you want high cooling capacity with minimal intrusion, this option is worth considering.

Under-Bunk/Ducted Systems: A Hidden and Quiet Alternative

Though not mentioned earlier, these systems are designed to stay out of sight. They’re ideal for larger caravans where aesthetics and quiet operation matter.

Cool air is distributed through ducts, making them very discreet. However, installation can be complex and is best left to professionals.

Portable Units: The Flexible, No-Installation Option

Portable air conditioners are great for those who prefer flexibility. They don’t require installation and can be moved as needed.

They sit inside the caravan and are ideal if you have limited roof space or don’t want to modify your vehicle.

These are especially popular for smaller caravans and DIY enthusiasts.

EcoFlow portable air conditioner with matching battery unit on a white background.

Sizing and Power: What You Need to Know Before You Buy

Calculating the Right Cooling Capacity (kW/BTU) for Your Caravan's Size

Your caravan’s size and insulation directly impact how much cooling you’ll need.

Portable units can deliver up to 3.5kW, while roof-mounted ones can go as high as 4kW. Larger caravans or those used in hot climates will benefit from higher capacity units.

Make sure to match the unit's output to your van’s actual needs—bigger isn’t always better.

Understanding the Power Consumption and Electrical Requirements

Most caravans operate on a 12V system, which isn’t always sufficient for air conditioning. Air con units often require 240V mains power or specialised power upgrades.

Typical power usage ranges from 500W (small portables) up to 5,000W (large split systems). You may need to upgrade your caravan's electrical system to handle the load safely.

Consult your caravan manual or a licensed electrician before proceeding.

Powering Your Unit: On-Grid and Off-Grid Solutions

Using Mains Power at a Campsite

If you're plugged into mains power at a campsite, running an air conditioner is straightforward.

Just make sure the supply can handle the wattage. Most modern campsites provide a 10A or 16A connection, which is enough for most mid-sized units.

Remember to monitor your total power draw to avoid tripping breakers.

A Guide to Off-Grid Power: Solar Panels, Batteries, Inverters, and Generators

Off-grid setups are a bit trickier. You’ll need a combination of solar panels, deep-cycle batteries, and an inverter to run an air conditioner for any length of time.

Smaller units may run for short periods on battery power, but longer use often requires a generator. The bigger the unit, the more demand it places on your system.

Plan ahead to avoid running out of power on a hot day.

EcoFlow portable air conditioner paired with a foldable solar panel on a white background.

Installation, Operation, and Maintenance

The Installation Process: DIY vs. Professional

Key Considerations: Weight, Structural Support, and Sealing

Installing air con isn’t just about cutting a hole and plugging it in. Units can be heavy, and your caravan needs to support the extra weight.

Vents must be sealed properly to avoid water ingress. Walls and roofs must also handle vibration and movement while on the road.

If in doubt, consult a professional installer for safety.

When to Call a Licensed Professional for a Safe Install

A licensed technician ensures the job is done correctly. They’ll assess your van, confirm compatibility, and help you avoid damaging your structure or voiding warranties.

They can also advise on the best unit for your space and power setup. While professional help adds to the cost, it offers peace of mind and better long-term reliability.

Getting the Most Out of Your Air Conditioner

Tips for Efficient Cooling and Energy Saving

Run your air con during the coolest part of the day to reduce strain. Keep windows and doors closed, and use reflective blinds or curtains to block heat.

Position your caravan in the shade where possible. Using fans alongside your air conditioner can also help circulate cool air more efficiently.

Simple tweaks can make a big difference in comfort and power usage.

Essential Maintenance for a Long-Lasting Unit

To keep your air conditioner running smoothly, regular maintenance is key. Clean or replace filters as needed, check seals for cracks, and ensure vents remain unobstructed.

Annual servicing is a good idea—especially for rooftop or ducted units. A little care goes a long way in extending your system's lifespan.

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