Ralph from Flexfilm here. We put our Nanoflex ceramic film to the test with the most apples-to-apples comparison we could dream up: two nearly identical Tesla Model S sedans baking in southern sunshine—one fully tinted (70 % Nanoflex on the windshield, 50 % on every other window) and one bone-stock from the factory.
The Experiment in a Nutshell
- Location · 89 °F mid-day, cloud-free Georgia sky
- Vehicles · Both 2017 Model S, identical paint & interiors
- Condition · Parked side-by-side, power off, doors closed for heat soak
- Goal · Compare how quickly and how efficiently each car’s A/C reaches 74 °F and how many fan bars it needs to hold that temp
Why Fan Bars Matter
Tesla’s climate control uses a bar graph (0–10) to show blower speed. Fewer bars = less electrical draw = longer range and less cabin noise. We recorded:
- Peak bars when AUTO first kicked in
- Time to hit 74 °F
- Steady-state bars needed to maintain 74 °F for 5 minutes
Results
| No Tint (Factory Glass) | Nanoflex 70 / 50 | |
|---|---|---|
| Cabin temp after heat-soak | > 100 °F | > 100 °F (~3 °F lower) |
| Peak fan bars at AUTO | 10 bars (max) | 8 bars |
| Time to reach 74 °F | ≈ 5 min 45 sec | ≈ 3 min 10 sec |
| Steady-state fan bars | 6 bars | 3 bars |
What It Means on the Road
- Lower starting temp · Nanoflex knocked a few degrees off the initial oven effect.
- 50 % faster cool-down · Cabin comfort arrived in just over three minutes vs. almost six.
- Half the blower speed · Holding 74 °F required only 3 bars—meaning quieter rides and less battery drain.
Specs are great, but nothing beats a real-world bake test. Nanoflex paid off in every metric that counts: range, comfort, and time-to-cool. Want those results in your EV or daily driver? Grab Nanoflex at FlexfilmStore.com or ring us for a local dealer referral.
