Installing A Window Air Conditioner In Your Camper

how to install a window air conditioner in a camper

Installing a window air conditioner in a camper van is a great way to keep cool during the summer. While most window AC units are designed for houses or apartments, they can be installed in RVs too. There are several benefits to using a window AC unit in your RV. They are generally more budget-friendly than rooftop units, which can cost anywhere from $1000 to $3,500 plus installation costs. Window units are also removable, which means you can take them out during the winter to let natural light into your RV.

When choosing a window AC unit for your RV, there are a few things to keep in mind. First, consider where you want to install it. If you plan on travelling with the unit in place, avoid sticking it out the side, as this may make your RV too wide. Many people choose to install window AC units on the back wall of their RV.

You should also think about the power requirements of the unit. RVs have limited power loads, so you'll need to make sure the window AC unit won't trip the breaker each time you try to run it. Additionally, consider the cooling capacity of the unit and make sure it's appropriate for the size of your RV.

Overall, installing a window AC unit in your camper van can be a great way to stay cool during the hot summer months. With the right unit and installation, you'll be able to enjoy a comfortable and cool space no matter where your travels take you.

Characteristics Values
Installation location Window, back wall, floor
Installation cost $200
Installation time 2-3 hours
Installation difficulty Medium
Power consumption 440-520 watts
BTU 5,000-6,000
Noise level Quiet

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Choosing the right air conditioner

  • Cooling capacity: The cooling capacity of an air conditioner is measured in British Thermal Units (BTU). A higher BTU rating indicates greater cooling power. For effective cooling, aim for an air conditioner with at least 5,000 BTU.
  • Power source: Camper vans typically use either shore power (plugged into a fixed outlet) or a house battery system. If you frequent RV parks or have access to shore power, a 120-volt AC unit is a cost-effective option. However, if you prefer off-grid adventures, a 12-volt AC unit is more efficient and better suited for running off your battery system.
  • Efficiency: Efficiency is crucial, especially if you want to reduce your carbon footprint or conserve battery power. Look for air conditioners with a high Energy Efficiency Ratio (EER) or Seasonal Energy Efficiency Ratio (SEER). These ratings indicate how effectively the unit cools relative to its power consumption.
  • Noise level: Air conditioners for camper vans can be loud, ranging from 35 to 75 decibels. If you prioritise a peaceful environment, consider investing in AC silencers or additional insulation to minimise noise.
  • Installation: Consider your DIY skills and the complexity of installation. Some air conditioners come with templates for an exact fit, making the process more straightforward. Ensure a proper seal is created between the AC unit and the van's roof to prevent leaks and prolong the life of your air conditioner.
  • Type of air conditioner: There are three main types of AC units for camper vans: ducted, non-ducted, and rooftop units. Ducted air conditioners consist of separate interior and exterior units, which may be impractical for smaller vans. Non-ducted ACs are the most common, drawing air from the van's interior and blowing it back out. Rooftop air conditioners are typically designed for larger Class A or C RVs and may be bulky for a camper van.
  • Durability and maintenance: Opt for trusted brands with a reputation for durability. Additionally, consider the long-term maintenance requirements. Regular cleaning of condenser coils and intake filters is essential to prevent freezing and ensure optimal performance.
  • Space and portability: If space is limited in your camper van, a portable AC unit may be your best option. These units are easy to move and store when not in use. However, they tend to be less powerful and less efficient than fixed installations.

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Cutting the right-sized hole

The first step in installing a window air conditioner in a camper is to cut a hole in the side of the camper. This hole will allow the air conditioner to pull in ambient air from outside, which is necessary for the air conditioner to function properly. The size of the hole will depend on the size of the air conditioner, but it should be large enough to accommodate the unit with some extra space for ventilation.

When cutting the hole, it is important to use the appropriate tools and safety gear, such as gloves and eye protection. It is also crucial to measure twice and cut once, as the saying goes, to ensure that the hole is the correct size and in the correct location.

Once the hole is cut, it is important to seal it properly to prevent water leaks and drafts. This can be done using a suitable sealant or caulk. It is also a good idea to add some insulation around the hole to keep the cold air in and the hot air out.

If possible, it is recommended to have a professional cut the hole, as they will have the experience and expertise to do it safely and effectively. However, with the right tools and careful planning, it is possible for a DIY enthusiast to tackle this project.

In addition to the hole for the air conditioner itself, it is important to cut a second hole directly behind the unit to allow for heat exhaust. This will ensure that the hot air from the air conditioner does not enter back into the camper. Proper ventilation is crucial for the efficient operation of the air conditioner and to prevent overheating.

Furthermore, consider the condensation that will be created by the unit as it cools the air. Typically, air conditioners are designed with a fan near the condensation pan to help evaporate the water, but this may not be sufficient, especially in hotter climates. Drilling a hole in the condensation pan and attaching a hose or creating a funnel system to guide the water out of the camper is recommended. This will prevent water from soaking the floor of the camper.

Overall, cutting the right-sized hole is a crucial step in installing a window air conditioner in a camper. It is important to consider the size and placement of the hole, as well as proper sealing and ventilation, to ensure the efficient operation of the air conditioner and maintain the comfort of the camper.

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Providing adequate ventilation

There are several ways to provide ventilation for the condenser coils:

  • Cut a hole in the floor of the camper and use ducts to direct the air to the condenser coils. This method ensures a constant supply of fresh air and can be designed to minimise any impact on the performance of the AC unit. However, it requires careful planning and execution to ensure a secure and functional installation.
  • Install the AC unit in a box that is vented to the outside, similar to a window installation. This method provides adequate ventilation while keeping the unit contained within the camper.
  • Place the entire AC unit outside the camper, with only the evaporator coil ducted inside. This configuration allows for more efficient cooling as the condenser coil is not affected by the hot air inside the camper.
  • Install the AC unit on the back wall of the camper, using inlet ducts that go through the floor to supply intake for condenser cooling air. This method ensures adequate ventilation while utilising the existing structure of the camper.

When designing the ventilation system, it is important to consider the size and number of vents or ducts. Restricting the condenser cooling air can lead to increased condenser temperature, decreased cooling output, and higher power consumption. Therefore, it is crucial to use ducts and vents that are large enough to provide sufficient airflow to the condenser coils.

Additionally, the placement of the AC unit and vents should be carefully considered. If travelling with the AC unit in place, avoid sticking it out the side of the camper, as this may make the vehicle too wide for the road. Many people choose to install the unit on the back wall or in an area that needs cooling the most, such as a room that has difficulty cooling down.

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Dealing with condensation

Cross Ventilation

Cross ventilation is a tried-and-true method for avoiding condensation. Keep a window or ceiling vent open to provide circulation and let moisture escape. This is especially important when doing activities that create extra water vapour, such as showering or cooking.

Temperature Control

Raising the indoor temperature can help curb condensation production. This is because raising the indoor temperature also raises the temperature of cold surfaces in the camper, such as glass. However, this may not completely eliminate condensation.

Dehumidifiers

Using a dehumidifier can significantly reduce humidity levels and help remove moisture from the air. This is especially useful if you are camping in cold climates or using single-pane windows for winter camping.

Vent Fans

Using vent fans in combination with a dehumidifier can be effective in reducing condensation. Open the vents above your stove and on the ceiling of your camper and run the fans a couple of times a day when things start to feel humid.

Avoid Hanging Things to Dry Indoors

Avoid hanging wet things to dry inside the camper, as this will add to the humidity. Use a laundry room dryer or hang towels and laundry outside to dry if possible.

Electric Space Heaters

Consider using electric space heaters instead of a propane furnace. Propane heaters emit a lot of moisture, while electric heaters will keep things nice and dry.

Cooking Methods

Pots and pans on the stove release steam into the air, so consider alternative cooking methods to reduce condensation. Use an RV oven, an Instant Pot, or cook outdoors if possible.

Window Insulation

Covering windows with a special window insulation film can help reduce condensation on the inside of windows. Double-pane RV windows are also a great option for reducing condensation and providing better insulation, but they are costly and heavy.

Cabinet Circulation

Keep cabinet doors open as much as possible when the weather is cold to allow air to circulate and prevent mould growth caused by trapped condensation. You can also place moisture absorbers, such as DampRid, in each cabinet to help absorb moisture.

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Powering the air conditioner

The power requirements of the air conditioner unit should be considered before installation. Camper vans have limited power loads, so it is important to ensure that the air conditioner unit will not trip the breaker each time it is turned on. The power draw of the air conditioner unit should not exceed the capacity of the camper van's electrical system.

If the air conditioner unit is to be powered by a generator, it is important to ensure that the generator has sufficient power output to run the air conditioner unit without overloading it.

In some cases, it may be necessary to upgrade the electrical system of the camper van to accommodate the power requirements of the air conditioner unit. This may involve installing additional batteries or upgrading the alternator.

It is also important to consider the efficiency of the air conditioner unit. A more efficient unit will consume less power for the same cooling output, reducing the load on the camper van's electrical system.

Additionally, the use of a soft start device or inverter can help reduce the power draw of the air conditioner unit during startup. This can be especially beneficial if the camper van's electrical system is near its capacity limit.

Proper wiring and fusing are crucial to ensure safe and efficient operation of the air conditioner unit. It is recommended to consult with a qualified electrician to ensure that the electrical system is properly sized and installed.

Finally, it is important to consider the location of the power source and the length of the power cable. The power source should be easily accessible and the power cable should be long enough to reach the air conditioner unit without causing any strain or damage.

By carefully considering the power requirements and electrical system of the camper van, one can ensure that the air conditioner unit is powered effectively and safely.

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Frequently asked questions

Window air conditioners are a great way to keep your camper cool during the hot summer months. They are generally more budget-friendly than rooftop units, which can cost anywhere from $1000 to $3,500 plus installation costs. Window units are also removable, which means you can take them out during the winter to let natural light into your camper. They are also great for targeting specific areas that need extra cooling.

When choosing a window air conditioner for your camper, consider the following:

- Installation location: If you plan on travelling with the unit in place, avoid sticking it out the side as this may make your camper too wide. Many people choose to install window air conditioners on the back wall of their camper.

- Power requirements: Campers have limited power loads, so you'll need to make sure the window air conditioner won't trip the breaker each time you try to run it.

- Cooling capacity: Make sure the cooling capacity of the unit is appropriate for the size of your camper.

The process for installing a window air conditioner in a camper will vary depending on the specific unit and camper. However, here are some general steps to follow:

- Cut a hole in the wall or window of your camper to accommodate the unit.

- Drill holes for ventilation and condensation drainage.

- Secure the unit in place using brackets or other hardware.

- Connect the unit to a power source.

To maintain and use your window air conditioner effectively:

- Regularly clean or replace the air filters.

- Ensure adequate ventilation and airflow around the unit.

- Monitor power consumption to avoid overloading your camper's electrical system.

- Cover or remove the unit during the winter months to protect it from the elements.

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