Yes, heat will be an issue, even with tint added to your windows. I personally don't find tint to be enough to reduce heat build-up inside the van during warm summer days. But then again, I'm used to living in cool weather climate around 55 to 65 degrees on most days. So anything much warmer in the upper 80s or 90s is too warm for me. I keep multiple analog and digital thermometers inside the van, and I know the exact temperature at all times. Anytime my thermometer reads in the high 90s or even 100 plus, that's just absurdly warm for me to be inside the van, and I would be sweating like crazy. That's when I hang out at the mall or air-conditioned movie theaters! <img class="emoticon bbc_img" src="/images/boards/smilies/biggrin.gif"> <br><br>This is an example of the folding/collapsible sun shade that I use for my van's large 3 bay windows. What's nice about this shade is that it's tall enough to simply stay put by itself inside the window-sill of my conversion van. In other words, I don't need to use tape or velcro or anything, the shade simply stays put on its own. The shade is not wide enough to cover the entire length of my bay windows, I would say roughly a few inches are exposed on the left and right sides of the bay windows. But that's okay for me, because I can use those few exposed inches to look outside of the window whenever I need to. This product below is *not* the exact one I use, but is a close match to the one I got from a local O'Reilly Auto Store. I use 3 of these sunshades for my 3 large bay windows of my van. It is IMPOSSIBLE for anyone outside to look through the window with this sunshade. Plus it adds extra heat reduction, without having to use that reflectix stuff. When not needed, this shade folds down into a compact circle.<br><a href="
http://www.amazon.com/Altus-Platinum-Magic-Shade-Sunshade/dp/B000EBKG90/ref=pd_sim_sbs_hg_4" rel="nofollow" target="_blank">
http://www.amazon.com/Altus-Platinum-Magic-Shade-Sunshade/dp/B000EBKG90/ref=pd_sim_sbs_hg_4</a><br><br>As for my windshield, I use the jumbo size folding/collapsible sun shade. Here's an Amazon link for the windshield shade I use, which works great. I really like this product, and it's large enough to fit my van's windshield on a Ford E150 van. I like this type of design much better versus the usual accordian-like sun shade that over time will deterioriate and get bent out of shape. When not needed, this collapsible shade folds down into a compact circle. Here's a link.<br><a href="
http://www.amazon.com/gp/product/B008CHI9EC/ref=oh_details_o06_s00_i00?ie=UTF8&psc=1" rel="nofollow" target="_blank">
http://www.amazon.com/gp/product/B008CHI9EC/ref=oh_details_o06_s00_i00?ie=UTF8&psc=1</a><br><br>I also use this sun shade that blocks sunlight in between the windshield mirror. This is surprisingly useful and blocks out the sunlight from hitting your eyes while driving when the visors are not sufficient. Warning: Sometimes you might get a defective unit which will start peeling off over time, if so, send back for an exchange. Here's an Amazon link.<br><a href="
http://www.amazon.com/gp/product/B006B1LI7Q/ref=oh_details_o07_s00_i00?ie=UTF8&psc=1" rel="nofollow" target="_blank">
http://www.amazon.com/gp/product/B006B1LI7Q/ref=oh_details_o07_s00_i00?ie=UTF8&psc=1</a><br><br>I also use these folding/collapsible static cling-on sun shades for the side door windows (driver and passenger side doors). One brand is larger, and the other is smaller (I like the larger one better). Here are Amazon links below. These also help to block the view from anyone outside looking into your front door windows. You can still see out the windows with this shade on. You can probably even drive with this on too, but I don't recommend it. Really easy to use, and you can easily take the shade off in seconds and folds down into a small circle when not needed.<br><a href="
http://www.amazon.com/gp/product/B00B7M7BN4/ref=oh_details_o08_s00_i00?ie=UTF8&psc=1" rel="nofollow" target="_blank">
http://www.amazon.com/gp/product/B00B7M7BN4/ref=oh_details_o08_s00_i00?ie=UTF8&psc=1</a><br><a href="
http://www.amazon.com/gp/product/B006ZVV0NO/ref=oh_details_o08_s00_i01?ie=UTF8&psc=1" rel="nofollow" target="_blank">
http://www.amazon.com/gp/product/B006ZVV0NO/ref=oh_details_o08_s00_i01?ie=UTF8&psc=1</a><br><br>Here's the digital thermometer/clock device that I use from Radio Shack. I have 2 of these for the front and rear of my van. I always know the exact temperature to the 1/10 of a degree. This thermometer also has a separate remote sensor, but I don't use it. I like the bottom button which I can press to turn on the LCD light at night time to see the readings. Plus it has some type of weather forecast feature that is suppose to predict whether it will be sunny or raining soon.<br><a href="
http://www.radioshack.com/product/index.jsp?productId=11361231" rel="nofollow" target="_blank">
http://www.radioshack.com/product/index.jsp?productId=11361231</a><br><br>Plus I have at least 6 or 7 different types of portable fans in different sizes. Some are powered by 12 volts, others by USB, others by batteries. I have 2 of these 12 volt clip-on fans from Camping World which are clamped onto the wooden panel of my conversion van near the ceiling and are pointed towards the bed. The fan head also rotates automatically about 180 degrees if you want, or can be locked into same position. See link below.<br><a href="
http://www.campingworld.com/shoppin...35393333&gclid=CKGK6Kje67gCFYai4AodtVAAvQ" rel="nofollow" target="_blank">
http://www.campingworld.com/shoppin...35393333&gclid=CKGK6Kje67gCFYai4AodtVAAvQ</a><br><br>As you can tell, when it comes to sun shades and reducing heat build-up in my van, I don't mess around!! I take heat reduction seriously, haha! Heck, I would get an air conditioner too, but I simply don't have any more room inside my van! Fortunately, my van's built-in air condition works great whenever I need it! <img class="emoticon bbc_img" src="/images/boards/smilies/eek.gif"><img class="emoticon bbc_img" src="/images/boards/smilies/thumb.gif"><br><br>