I went with LLumar CTX 35% on the passenger and drivers doors and 80% AIR ceramic for the front windshield. Both are super easy to see out of at night. Probably would have gone a little darker on the windshield (70% Expel or similar) to reduce the heat a bit more.

I did not dint over the factory tint on the rear window, but think you solution to go to 70% over them would help with heat reduction (believe the factory tint is about 20% on the RDX rear windows). The two key heat areas for the RDX are the windshield and pano-sunroof. I am not a fan of tinting sunroofs as they absorb too much heat in the glass, rather I made a custom shield out of a windshield reflector - which is amazing at reducing the heat from the pano roof. Especially with the summers in Texas and Florida.

 

Summers in St. Louis, MO are hot and humid and so far, the RDX A/C has proven meager.

I have the fronts tinted but I am thinking about re-tinting w/ a ceramic tint and adding the windshield to reduce that inside heat and improve night vis (it's tough for my older eyes, too).

Also, let's hear some more about that 'custom shield' you made for the sunroof, @Texasrdx21 .

 

Good quality Ceramic tint on the Windshield makes a world of difference and driver and passanger doors. The rest is a waste of money.
****(LLumar, Expel. Suntek, 3M or KAVACA). Look at the TSER (Total Solar Energy reduction), as that is the best measure of heat reduction overall. Too dark on the windshield (to me anything less than 70%), and driving at night or in rainy conditions is difficult. Plus, more likely to get a ticket.

This is the light weight windshield I slide between the pano roof shade and glass. It defects all the sun and adds some insulation. Definitely notice a big difference. Plus, I never open the sunroof or shade. If you do, you may want to look at other options, as the shade going back will get stuck when you try to open it with my solution - possibly a costly fix.
https://www.walmart.com/ip/Auto-Driv...0&from=/search

Also:
1) Rinsing out the front of the radiator with a low pressure garden hose (that's where the ac radiator is) increases the cooling capabilities.
2) Make sure the cowling under the windshield arms is clean, as that is where the clean air comes to the inside air cabin box.
2) Change the air cabin filter ($10-$12 on amazon - 5 minute install).
3) Getting a AC tune up - checking for leaks, checking everything is working correctly and ensuring the system is correctly charged.

All of those combined made a huge affect on the cooling in the super hot summer temps.

 

I ordered one of those sun shields today, how did you slide it into place? I assume you open the shade half way or so, slide the shield as far back as you can and then hold the front part up as you close the shade?

 

Exactly. I open the Shade about a foot or so, slide the shade in till it hits the back and leave the two attached sunshade straps slightly visible in the front (that way it reminds me its there - so I don't open the sunroof by accident).
Note:
1) Silver reflective part facing UP (toward the glass).
2) I believe one pane is folded over in the back and front - as it's longer than the pano roof.
*Never had an issue with the light weight shade sandwiched between the glass and pano roof shade. I was surprised on how much it helped.
**New Cabin Air filter, rinsing out the AC radiator in front of the radiator with a garden hose (NOT high pressure) and windshield+front windows ceramic tint add to making the Acura's AC work noticeably better. Though, it will never be meat locker cold like a Lexus or Infiniti.

 

Thank you, I installed it this morning and it was a piece of cake. The only thing I did different was that I folded the 2 center panes over instead of the front and back so that the open spot at the mirror cutout is gone. This was the first time in 6 years that the sun shade has been opened so it took longer to look up the operating instructions than it did to slide the shield in place.

I think it was one of your posts a few years ago that mentioned Llumar tint. We had the front doors and windshield done with their Air 80 film at the time, mostly for the UV protection but I think it's helped with heat rejection also.