Summer can be an amazing time to go camping, but the hot summer sun can turn your RV into a metal sweat-box. In this article we’ll look at some simple tips on how to keep your RV cool in the summer.
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Table of Contents
- 1 How to Keep an RV Cool
- 2 Ways to Prevent your RV from Heating Up
- 2.1 1) Park in the Shade
- 2.2 2) Cover your Roof Vents (with a reflective surface)
- 2.3 3) Put Sun Shades on the Window and Doors
- 2.4 4) Use Larger Window Sun Shades when necessary
- 2.5 5) Another Reflective option – Use an “Emergency Blanket” on windows to reflect heat
- 2.6 6) Extend your Awning to create shade
- 2.7 7) Get an Awning Sun Shade
- 2.8 8) Ensure your Fridge’s External Vents are Clear
- 3 Cooling your RV down
- 4 MAINTAINING a Cool RV
- 4.1 13) Keep the exterior door closed and try to minimize frequent openings
- 4.2 14) Don’t use the stove or oven
- 4.3 15) Turn off interior lights and consider switching to LED lights
- 4.4 16) Open up windows in the cool evening air and close them in the morning
- 4.5 17) Open up cupboards, cabinets and doors in the evening
- 4.6 YOU MAY ALSO LIKE
How to Keep an RV Cool
In this article we’ll look at 3 main categories:
- Ways to Prevent your RV from Heating Up
- How to Cool your RV, or how to cool yourself in your RV (there is a difference)
- How to Maintain Cool in your RV
About 10 years ago I lived in an old mobile home without air-conditioning – and I live in one of the hottest parts of Canada (and yes, it does get hot here). So I had to utilize many of these tips and tricks to help cool down my trailer without air-conditioning.
I hope some of them help you too.
Ways to Prevent your RV from Heating Up
The best way to cool down a hot RV is to prevent it from getting hot in the first place.
The following tips are ways to help keep the sun off your RV, and to prevent it from heating up your RV.
1) Park in the Shade
This sounds obvious, but it still needs to be stated: park in the shade if you can. The shade provided by large trees, hills or even buildings can make a huge difference in the internal temperature of your RV.
If you’re reserving a spot at a campground you’ve never been too, check out Google Maps or other mapping services that allow a good bird’s eye view of the property to scope out trees and shady spots.
2) Cover your Roof Vents (with a reflective surface)
This foam-based vent filler from Camco has a reflective surface that gets tucked up inside your RV’s ceiling vent. (Fits into 14-inch RV vents.) It helps reflect the sun’s rays off your RV. Its insulating abilities help your RV stay cooler in the summer (and warmer in the winter).
It is currently very well-rated with 4.8 stars out of 5, and over 4,100 customers have rated it on Amazon.
Don’t forget your shower skylight…
Get a measurement for your shower’s skylight…you may want to put something on that to block the sun too. (Some options are listed below.)
3) Put Sun Shades on the Window and Doors
This 16-inch by 25-inch reflective sun shade can be used on RV doors or windows. It uses velcro strips to stay in place.
It’ll help prevent the sun’s rays from entering through the window, but some Amazon reviewers noted that it is not a “blackout” option: some light still came through. If you want to see more details on Amazon click here.
And lower your RV’s pull-down shades or blinds if you have them.
4) Use Larger Window Sun Shades when necessary
This sun shade from Camco is similar to the one mentioned above, but it is larger and better suited for large RV windows. It is 62-inches long by 26-inches wide. It also uses velcro strips to “stick” to the window or door. By sticking this tightly to the window it helps reflect the sunshine off your RV and helps keep your RV cooler (and darker).
It is well-rated at 4.7 stars out of 5 with over 1,000 customer ratings on Amazon.
5) Another Reflective option – Use an “Emergency Blanket” on windows to reflect heat
If you don’t want to buy a dedicated sun shade then an emergency blanket (that hikers often pack with them and look like large tin foil sheets) can be used to reflect the suns rays off your RV’s windows.
Ideally you’d tape them to the outside of your RV’s windows so the window itself doesn’t get hot in the first place. But if you don’t like this “look”, you can tape it inside directly against the window.
If you want a more commercial product with better insulating properties check out these rolls of Reflectix foil bubble wrap.
6) Extend your Awning to create shade
Extend your awning to help shade your RV (if it’s on the sunny side). This will not only shade the windows on that side of your RV, but the walls too.
7) Get an Awning Sun Shade
An awning shade like this one (from Tentproinc) can really help to make your outdoor seating area more comfortable. And some reviewers on Amazon claimed it helped reduce the heat inside their RV too. (If that wall of the RV is cooler then less heat transfers inside.)
It attaches to the top slot of your awning, and anchors to plastic stakes in the ground: they claim you can set it up in minutes. This particular product comes in various sizes and currently has a very high rating of 4.8 stars out of 5 on Amazon.
8) Ensure your Fridge’s External Vents are Clear
An RV fridge pulls heat from the inside of the food compartment and exhausts it outside. If this external vent is dirty or obstructed then this heat will “back up” and contribute to warming up your RV. And the fridge will have to work harder to maintain a cool temperature.
You can purchase rack fans that’ll attach to the external refrigerator vents to aid in the exhaust of this hot air away from your fridge to the great outdoors.
Cooling your RV down
So far we have looked at options to help prevent your RV from getting hot. These included various ways to block the sun and create shade.
Now we’re going to look at ways to cool down your RV.
9) Get your Air Conditioner Serviced and Clean the Air Vents or Grill
If you have an air conditioner on your RV then you need to ask yourself if it is working optimally. Have you had it serviced recently?
An air conditioner is usually the largest electricity draw in your RV. So if your air conditioner isn’t serviced properly then it won’t “blow cold”, and it’ll be wasting electricity (and therefore your money).
And clean the A/C vents and ducts (if you have a ducted system) or the A/C’s grill if you have a non-ducted system. We want to maximize air flow and limit obstructions.
10) Get a New Reversible Roof Fan (this could be key)
If you have an older RV its ceiling fan may not be working very well. This means hot air is staying “stagnant” in your enclosed trailer or motorhome.
We know hot air rises…so you want a ceiling fan that can exhaust that hot air outside. There are new replacement roof fans that’ll fit into different size roof openings – generally 12”X12″ or 14’X 14″ – and they’ll move more air and be quieter than most base models.
There are several reviewers on Amazon that claim a new replacement fan made a huge difference in the comfort of their RV.
To improve ventilation in your RV the roof van will pull the hot air out the top, and to let new fresh air in you can crack a window on the shady side of your RV.
The fan shown here – the Maxxfan Plus by MaxAir – has the option to run it with the overhead vent closed. They call this ceiling fan mode. Not all fans have this, but you should get a fan that provides reversible air flow.
When the ceiling fan blows air down upon you it gives you a cooling sensation because of the evaporation of moisture from your skin. It doesn’t actually cool the air down. (That is what an air conditioner is for).
Look for a roof fan that can:
- pull hot air out of the RV and exhaust it outside and
- blow air down upon you to give you a cooling sensation (this is particularly good for sleeping quarters so you don’t need the A/C running all night).
11) Use a personal fan or table top fan
I mentioned above that a fan doesn’t actually cool the air, but it does provide us with a cooling sensation…and as long as it provides me with some relief I don’t care how it works.
The fan shown in the picture above is rechargeable, portable and they claim it can go almost 24 hours on a charge. What’s cool is that its base is a clamp. So it can lay flat on a table, or you can use the clamp to grip the side of a table, a camping chair, beach umbrella, etc…
And the cost is reasonable.
If you want a more powerful, plug-in table top fan, there are lots of options out there including the expensive Dyson line of fans, or you may like this one below: it is remote controlled!
12) Put a Bowl of Ice in Front of a Blowing Fan
I learned this trick from a friend of mine who camped in an old metal trailer in the hot Arizona sun. If you have melting ice or cold water in your cooler, toss it into a bowl and place it in front of your table fan. The air passing over the ice water gets chilled and provides you some better relief.
And I learned from this article on Angie’s List that if you don’t have any ice then a damp cloth placed over the fan will have a similar cooling effect. (I’ve yet to try this.)
Sick of having a cluttered and messy RV?
MAINTAINING a Cool RV
If you’ve done your best to prevent your RV from warming up in the first place, or if you’ve turned on your RV air-conditioner to cool it down, then there are some simple things you can do to help KEEP your RV cool.
13) Keep the exterior door closed and try to minimize frequent openings
14) Don’t use the stove or oven
On hot days you should plan to use your outdoor kitchen or campfire to cook meals, or eat meals that don’t require cooking (like sandwiches and salads).
15) Turn off interior lights and consider switching to LED lights
If your RV still has incandescent light bulbs or halogen lights then make sure you turn these off: they do emit heat.
And if you can, you should consider installing LED lights which give you light (obviously) but they don’t release heat.
16) Open up windows in the cool evening air and close them in the morning
Keep the windows closed during the daytime to prevent hot air from infiltrating your RV, but open up the windows at night if you are camping in a place with cool evenings.
17) Open up cupboards, cabinets and doors in the evening
In the evening when the temperature has cooled down you should open up your cabinets, cupboards and bedroom doors to allow trapped air to circulate. I learned from this article by EZ Snap that air in enclosed spaces like this may stay warm and contribute to heating your RV.
I hope some of these ideas on how to keep your RV cool in summer will help you have a really COOL summer.
You may also like this article on choosing a generator for your RV (since an Air-conditioner is such a power hog).
75 clever RV Organization Accessories (that RV’ers snatch up like hotcakes)
Plus check out:
- 8 RV Cord Storage Ideas
- How to keep your RV windows from Sweating
- Want to document your camping trips? Check out this RV Journal and Logbook
- Or are you sick of cluttered RV? Check out this RV Organization planner and bundle.
Tim from LearnAlongWithMe.com