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Foot Warmer

The FootWarmer module redirects some heated airflow in the driver’s footwell to the right foot. The current footwell vents direct most heated air to the left footwell area. While our FootWarmer will not create instantaneous heat, it is noticeably more comfortable as you drive in the cold.

Availability

Currently the FootWarmer is only available for the Refreshed Model S (April 2016 and newer).  It does not fit in the older classic Model S. The Model 3 and X uses a different airflow that appears to distribute the airflow more evenly to the feet. Our FootWarmer installs in less than a minute, and only requires a phillips screwdriver to lock the module into place. No cuts or modifications are required to your Tesla and it can be removed at any time.

FootWarmer Module (red) with locking screw

Heat Distribution Analysis

The following two-minute time lapse shows a shoe on the accelerator getting a 10 degree rise over a 2-minute period.  No foot was in the shoe to avoid skewing the results with body heat. The fan was set at 8, and airflow directed to the feet.  Without the Footwarmer insert, almost no heat appears on the shoe.

thermal_foot_warming

Thermal Imaging with FootWarmer

In actual use, as you’d expect, the heating is not instantaneous. For me, it makes a noticeable difference over time. Prior to the FootWarmer, my right foot seems to never get warm when driving in the cold, especially my toes. If your feet never get cold, you obviously don’t need the FootWarmer!

Ordering

I made a small number of FootWarmer modules, and they are available to be purchased on eBay for $18.75, and includes free USA shipping.  I’m not sure I’ll make more once these sell out as it’s just too much work to make these.

buy on eBay

Installation
  1. Insert the included screw partially in the hole of the FootWarmer – 1 or 2 turns at most (screw will be loose).
  2. In your car, move the seat to the rear for more room to work.
  3. Locate the footwell vent hole under the dash:
    install_1
  4. Complete your installation by viewing this 1 minute installation video. On the final step screwing in the lock screw, do NOT use a power screwdriver and stop when the screw is seated to avoid stripping it out.
Creating the FootWarmer

I went through 11 designs to create the final easy to install optimized FootWarmer module. It turns out it’s not quite as easy as I expected to redirect airflow! The thermal imaging helped me complete a design that gets the desired results.

Each FootWarmer is made using a 3D printer, taking over an hour for each part. Even with higher resolution printing, the quality is not quite up to injection molding standards. You may notice some minor imperfections that do not affect the function of the FootWarmer. Each part also requires some post hand work and machining to complete each module.

I hope you enjoy using the FootWarmer!

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