How to Keep your RV Cool in Summer

keep your rv cool in summer

How to Keep your RV Cool in Summer

keep your rv cool in summer

Table of Contents:

Summer is the perfect season for RV adventures. However, RVs can get hot, so you will want to take some steps to prepare for beating the heat. Keeping cool is not just about staying comfortable but also staying safe. High temperatures can result in rapid dehydration, overheating, or even heat stroke. Here are our top tips for how to keep your RV cool in summer so your journey will be safe and enjoyable. 

How to keep my RV cool in the Summer

How to stay cool in an RV without air conditioning

In some circumstances, it is preferable to rely on sources other than air conditioning to keep cool. Running the A/C expends a lot of energy, and there are other more energy-efficient and cost-effective ways to keep cool. Here are three simple alternatives to staying cool in an RV without air conditioning.

  • Maximize Shade

One effective way to stay cool in an RV without air conditioning is by maximizing shade. Parking your RV under trees can significantly reduce the amount of direct sunlight hitting your vehicle. If natural shade isn’t available, you can create your own using tarps or reflective sunshades. These can be positioned to cover windows and the roof, where heat penetration is most intense. In the northern hemisphere, park the vehicle so it is facing north. Positioning your RV so that the largest windows face away from the sun can help keep the interior cooler.

  • Promote Ventilation

Another great strategy is improving ventilation within the vehicle. Opening windows and roof vents promotes cross-ventilation, allowing hot air to escape and cooler air to enter. Portable fans, such as floor or window fans, also aid in circulating air throughout the RV. For added cooling, one hack is to create a makeshift air cooler by placing a bowl of ice or a wet cloth in front of the fan. Ensure that vents and fans are not blocked by furniture or other items.

  • Minimize Heat-Generation

Keeping cool means reducing heat. Minimize heat-generating activities during the hottest parts of the day. For instance, cooking indoors can significantly increase the indoor temperature, so consider using an outdoor grill or preparing meals that don’t require cooking. Additionally, energy-efficient LED lights produce less heat than traditional incandescent bulbs. Keeping appliances like laptops and televisions turned off when not in use can also help reduce the overall heat inside the RV. By following these measures, you can maintain a cooler and more comfortable living space even without air conditioning.

How to cool a camper without electricity

Not everyone wants or needs the luxury of air conditioning while enjoying the outdoors. Cooling a camper without electricity requires a combination of natural ventilation, strategic use of shade, and simple, low-tech solutions to manage the temperature. Here are three effective methods:

  1. Utilize Natural Ventilation

Maximizing airflow is crucial for cooling a camper without electricity. Open all windows, roof vents, and doors to create cross-ventilation. This allows cooler outside air to flow through the camper, pushing the hot air out. Positioning the camper to catch prevailing breezes can also enhance this effect. At night, when temperatures drop, open windows to let in the cool air and close them during the day to keep the heat out.

2. Create Shade

One of the best ways to keep cool is to take advantage of shade either by enhancing available shade or creating shade when it is limited. Park your camper under trees or other natural shade whenever possible. If natural shade isn’t available, use tarps, reflective sunshades, or DIY solutions like reflective blankets to cover the roof and windows. These materials can reflect the sun’s rays, significantly reducing heat absorption. Additionally, setting up the RV awning or a canopy on the side of the camper can provide extra shade and keep the area around your camper cooler.

3. Use Low-Tech Cooling Strategies

There are several simple methods to cool your camper without electricity. One effective technique is to hang wet towels or sheets in front of open windows. As the breeze passes through the damp fabric, it creates a cooling effect through evaporation. Another method is to fill a shallow pan or bowl with ice and place it in front of a battery-operated fan. The air blowing over the ice will create a cooler airflow. Additionally, using light-colored bedding and clothing can help keep your body temperature down, and placing reflective window covers or insulated curtains on the windows can help prevent heat from entering the camper.

RV window insulation for summer

Window insulation prevents heat from entering the RV by blocking the sun’s rays. This is a great low-tech solution for keeping your RV cool during the summer. There are a few different ways to insulate RV windows depending on your preferences. Many people opt for heavy, light-blocking curtains for a more aesthetically pleasing solution. Some RVers choose to cover the windows with reflectors or Reflectix bubble insulation. If your budget is flexible and you typically travel to or live full-time in a hot climate, it may be worthwhile to replace single-pane windows with energy efficient dual-pane windows.

Solar shades and covers for RV cooling

Solar shades and covers are highly effective in reducing heat inside an RV by blocking and reflecting sunlight. These covers can be placed over windows, skylights, and even the roof to prevent the sun’s rays from directly hitting the interior surfaces. By reflecting most of the heat away, solar shades help maintain a cooler interior temperature, reducing the need for additional cooling methods. They are often made from reflective or light-colored materials that enhance their heat-repelling properties. This not only keeps the RV cooler but also helps protect the interior from UV damage.

Shades & Blinds

Shades and blinds are versatile options for controlling heat and light inside an RV. When closed, they block out direct sunlight, reducing heat absorption while providing privacy. Many shades and blinds are designed with reflective surfaces that further enhance their ability to repel heat. By adjusting the angle of blinds, they can also help direct light away while still allowing some natural light to enter, balancing comfort and brightness. Additionally, they can be easily retracted or adjusted to control the amount of light and heat entering the RV at different times of the day.


Curtains provide an additional layer of insulation and can significantly contribute to keeping an RV cool. Heavy or thermal curtains are particularly effective, as they can block out sunlight and create a barrier against heat. By keeping the curtains closed during the hottest parts of the day, you can prevent the sun’s rays from penetrating the RV’s interior. Light-colored or reflective curtains can enhance this effect by reflecting heat away from the windows. Moreover, curtains can be easily drawn or opened to regulate the temperature as needed.


Sun reflectors are specialized devices designed to reflect the sun’s rays away from the RV, reducing heat buildup. They are typically placed on the dashboard, windows, or other exterior surfaces exposed to direct sunlight. Made from reflective materials, these reflectors can effectively redirect sunlight away, preventing it from heating the RV’s interior. By keeping the sun’s heat out, reflectors help maintain a more comfortable temperature inside the RV, especially during peak sunlight hours. They are quick and easy to install and remove, making them a convenient and efficient cooling solution.

Maximize air conditioning efficiency in your RV

Maximizing air conditioning efficiency in your RV can help keep you cool and comfortable while reducing energy consumption. Conserving energy is more cost-effective and environmentally sustainable. Here are some tips for helping your air conditioning run as efficiently as possible.

Optimize Insulation

Ensure your RV is well-insulated to prevent cool air from escaping and warm air from entering. Check for any gaps or leaks around windows, doors, and vents and seal them with weather stripping or caulking. Adding thermal curtains or reflective window covers can also enhance insulation, keeping the cool air inside longer and reducing the load on your air conditioning unit.

Shade and Cover

Park your RV in the shade whenever possible to reduce the amount of direct sunlight heating up your vehicle. Use awnings, tarps, or other external shades to cover windows and the roof. Reflective sunshades on windows can also significantly reduce the heat entering the RV, allowing your air conditioner to work more efficiently.

Minimize Heat Generation

Unless necessary, avoid using heat-generating appliances during the day such as stoves, ovens, and even incandescent lights. Opt for LED lights, which produce less heat and conserve more energy. If possible, use a microwave or cook outside with a grill or propane stove. You may even consider no-cook meals, such as smoothies or sandwiches. Reducing internal heat sources helps keep the RV cooler, making your air conditioning system more efficient.

Use Fans to Circulate Air

Use fans to circulate the cool air more effectively throughout the RV. Ceiling fans, portable fans, or even small vent fans can help distribute the cooled air evenly, reducing hot spots and making the entire space more comfortable. Placing a fan near the air conditioning unit can also help push cool air into other areas of the RV more efficiently.

Maintain the Air Conditioning Unit

Regular maintenance of your air conditioning unit is crucial for optimal performance. Clean or replace air filters as suggested by the owner’s manual. This ensures good airflow and prevents the system from working harder than necessary. Check the coils and fins for dirt and debris and keep the exterior unit free from obstructions to ensure proper ventilation.

Regular maintenance will keep your air conditioning running smoothly and prevent breakdowns. If the unit suffers an unexpected failure, air conditioning units are typically covered under an extended warranty plan. Investing in a trustworthy RV warranty can extend the lifetime of your RV. Get a quote today.

RV insulation ideas

RV insulation prevents hot air from penetrating the RV and cool air from escaping the interior. There are several different ways to insulate your RV. Here are some tips to maximize insulation.

Insulate Windows and Doors – Ensure there is a tight seal on door and window frames. Check the caulking or signs of wear, such as cracking or dryness. Replace seals as needed.

Upgrade the Skirting – RV skirting provides a barrier between the elements and RV undercarriage. The skirting helps block heat radiation from the ground. Upgrading skirting with the right materials will provide better insulation.

Block Vents

If you notice warm drafts in your RV, then the air conditioning is not performing optimally. Warm air may be entering the RV through vents. To prevent this, block the vents and skylight with vent cushions or covers while the air conditioner is in use. Insulating the vents with foam boards is another effective solution. Covering the vents helps maintain insulation while the air conditioning is running.

Seal Exterior Compartments

Hot air may enter and warm the RV via exterior storage compartments. Ensure there is a proper seal along all compartments. Inspect for damaged seals. Reapply caulking as necessary, then seal it with new weather stripping.  

Upgrade Wall Insulation

If you want to take additional steps to maximize the efficiency of your air conditioning, it could be worthwhile to consider upgrading the wall insulation in your RV. Wall insulation helps regulate the interior temperature of the RV by preventing heat radiation. Here are three types of RV insulation, their benefits, and their drawbacks.

  • Fiberglass insulation – Fiberglass insulation is the most used type of insulation in RVs. It is strong, lightweight, and relatively inexpensive to produce. It has a high thermal resistance rating, meaning it is effective at maintaining temperature in the interior of the RV. However, fiberglass is not as durable as other insulation types and is more susceptible to damage caused by moisture.
  • Rigid foam insulation – By contrast, rigid foam insulation is more durable and moisture resistant than fiberglass. Available in varying thicknesses and thermal resistance ratings, this type of insulation is suitable for a broad range of climates. Some drawbacks include affordability and ease of installation.
  • Spray foam insulation – Spray foam is an affordable insulation solution. It creates an excellent seal and repels moisture well. However, spray foam is somewhat challenging to install and typically has a lower thermal resistance rating.

Cooling systems upgrades for RVs

Upgrade to a High-Efficiency Air Conditioner

One effective upgrade for your RV cooling system is installing a high-efficiency air conditioner. Modern units are designed to be more energy-efficient, providing better cooling while consuming less power. These air conditioners often come with features such as programmable thermostats, variable-speed fans, and better insulation, which improve their overall performance. By upgrading to a high-efficiency model, you can enjoy a cooler RV environment with lower energy costs. Plus, newer units tend to be quieter, adding to the comfort of your RV experience.

Install a Vent Fan System

Adding a vent fan system is another great way to improve your RV’s cooling capabilities. Roof-mounted vent fans can significantly increase airflow, drawing hot air out and bringing cooler air in, especially when parked in a shaded area. These fans are typically powered by the RV’s battery and can be controlled by thermostats to automatically activate when temperatures rise. Vent fans are also useful for lowering humidity and improving air quality inside the RV. This upgrade is relatively easy to install and can make a noticeable difference in comfort levels.

Add Reflective Roof Coating

Applying a reflective roof coating is a cost-effective way to reduce heat absorption and improve cooling efficiency in your RV. These coatings are designed to reflect the sun’s rays, preventing the roof from becoming excessively hot and subsequently heating the interior. Reflective roof coatings not only lower the temperature inside the RV but also protect the roof from UV damage, extending its lifespan. This upgrade can be easily applied as a DIY project or by a professional, providing long-term benefits in terms of cooling and maintenance. Additionally, this solution complements other cooling efforts, such as air conditioning and ventilation systems.

Controlling humidity in RV 

Humidity control is important for ensuring comfort and preventing moisture accumulation. Too much moisture can result in mold or mildew, which poses a health hazard and causes damage to the RV interior. Here are some basic tips for reducing moisture and condensation in your RV.


Dehumidifiers are conveniently small, inexpensive appliances that remove excess moisture from the environment. They maintain a comfortable humidity level while preventing mold and microbes from thriving. Dehumidifiers work by drawing moisture from the air through cooling and releasing dry air.


Proper ventilation allows air to circulate in and out of the RV. To prevent condensation from accumulating overnight, keep the windows cracked. Keep windows open or use exhaust fans while participating in activities that produce steam, such as cooking or showering. Ventilation helps mitigate humidity.

DIY cooling solutions for your RV

DIY cooling solutions are a cost-effective alternative to keeping your RV cool during the summer months. Save money on products and professional installations while enjoying a more comfortable environment. Here are three simple projects to help maintain a comfortable temperature in your RV.

Make Reflective Window Covers

Creating and installing reflective window covers is a simple DIY project that can significantly reduce heat gain in your RV. Make your own reflective window covers with materials like bubble insulation or aluminum foil. Cut the pieces to fit your windows precisely. Secure them with Velcro strips or suction cups for easy placement and removal. These covers keep the interior cooler by reflecting sunlight away from the RV. This inexpensive solution can make a noticeable difference in maintaining a comfortable temperature inside your RV.

Create Vent Insulators

Another effective DIY cooling solution is making vent insulators. Use foam board or insulated cushions to cover roof vents and skylights. Measure the vent openings and cut the foam board to fit snugly, then cover it with a reflective material or fabric for added insulation. These homemade insulators can be easily inserted and removed, helping to keep cool air inside during hot days. They can easily be removed and stored when ventilation is needed.

Craft a DIY Evaporative Cooler

Creating a DIY evaporative cooler is a great low-tech way to cool your RV without relying on traditional methods.  You can create a simple evaporative cooler using a small fan, a container of water, and a sponge. Place the sponge in front of the fan and place it in a shallow container of water. As the fan blows air over the wet material, it produces a cooling effect through evaporation. This method is particularly effective in dry climates and provides a cost-efficient way to lower the temperature inside your RV.

Portable air conditioners for RVs

When choosing a portable air conditioner for your RV, there are some important factors to consider. Key factors for efficient cooling include cooling capacity rating, portability, features, and power consumption. The BTU rating indicates a unit’s cooling capacity. For an RV, you’ll typically need a unit with a BTU rating between 8,000 and 14,000, depending on the size of the RV. Be sure to choose the recommended rating for the size of the space.

Since RVs have limited space, the size and portability of the air conditioner are key considerations. Look for a compact and lightweight unit that can be easily moved and stored when not in use. Consider the dimensions and ensure it fits in your designated space without blocking movement within the RV.

Lastly, ensure that your RV’s electrical system can handle the additional load. Portable air conditioners typically require a power source, so verify the unit’s wattage and amperage requirements. Energy-efficient models can help minimize power usage and reduce strain on your RV’s power supply.


How do I keep my RV cool in extreme heat?

First, always try to park in the shadiest possible spot to avoid direct sunlight. Utilize the vehicle’s AC system to circulate cool air throughout the RV. Additionally, keep windows shut and blocked during the day and open at night if it’s cool enough. You may consider a floor or window fan for additional circulation.

Why do RVs get so hot?

Although they are larger than everyday vehicles, RVs have a relatively small indoor space that easily traps heat. RVs get hot due to high temperatures combined with a lack of ventilation. RVs typically have less insulation than a traditional home, making them less effective at blocking heat. Additionally, the metal and fiberglass materials absorb and retain heat, making the interior hotter.

How can I cool my RV down without AC?

Conserving energy during warm weather is important. There are some different ways to keep cool without running the AC. Floor fans and window fans help circulate air through the RV and can easily be moved between the sleeping area and living space. Keep the windows and curtains closed during the day to block heat. At night, crack the windows for ventilation. Park in the shade if possible and extend the awning during the day for a cool, shaded place to rest.

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