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1 Month Update on Model 3 Solar Roof (Ecoflow Heatguard Solar Film)

Sep 2, 2026

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1 Month Update: EcoFlow Heat Guard Solar Film for Tesla Model 3

1 Month Update: EcoFlow Heat Guard solar film on Tesla Model 3. Reliability, power, and practicality.

This review is a one-month update on the EcoFlow Heatguard solar film installed on a Tesla Model 3. The product is designed to reduce reliance on the electrical grid and is used by the author on a daily basis.

Характеристики и установка

Солнечная пленка состоит из двух отдельных панелей, каждая мощностью 125 Вт и силой тока 6 А. Панели могут быть подключены как параллельно, так и последовательно, в зависимости от используемой портативной зарядной станции. Для маломощных станций рекомендуется параллельное подключение для поддержания низкого напряжения. Для высокомощных станций, таких как Pecron F3000, предпочтительно последовательное подключение, обеспечивающее напряжение 50 В и силу тока 12 А. При параллельном подключении к Pecron F3000, низкое напряжение не позволяет станции распознать подключенные панели.

Установка пленки осуществляется с помощью двусторонней клейкой ленты 3M VHB. Перед снятием защитной пленки с ленты рекомендуется тщательно выбрать местоположение панелей и убедиться в симметричности их расположения, так как после установки демонтаж может повредить сами панели из-за высокой адгезии ленты. Автор отмечает, что лента оказалась значительно прочнее, чем ожидалось, и панели надежно держатся даже при скоростях свыше 80 миль в час.

Operation and Efficiency

The film covers the car's glass roof from the windshield to the point where further placement would be illegal due to visibility restrictions. The panels do not directly contact the glass; there is a layer of adhesive tape between them, which prevents the glass from overheating under the film.

Despite the film partially obstructing the view through the panoramic roof, the author considers this a minor drawback, given the hot climate and the desire to minimize sunlight penetration into the cabin. An additional roof cover is used for extra sun protection.

In conditions of variable cloudiness and weak sunlight, the panels demonstrate an output power in the range of 135-138 W. Under full sunlight, the maximum output power recorded corresponds to the stated 250 W. When used in conjunction with other panels, they provide rapid charging for the Pecron F3000 portable power station.

The film kit was purchased for $450 USD from EarthTech Products. The author considers this cost justified, given the product's daily practical benefit.

Accessibility and Application

A similar kit exists for the Tesla Model Y, providing an output of up to 300W. The author recommends it for Model Y owners who are willing to sacrifice the view through the panoramic roof for an additional power source, especially for camping or off-grid living.

Conclusion

After a month of use, the EcoFlow Heatguard solar film has demonstrated high efficiency and reliability. The author plans to keep the film on the car for the entire duration of ownership. A significant increase in interest in the topic is noted, as evidenced by over 50,000 views of the original video in the past month. The author expresses gratitude for the support and subscriptions.

First Impressions and Installation

The author shares their first month of using the EcoFlow Heat Guard solar film on their Tesla Model 3, expressing complete satisfaction with the product.

  • The EcoFlow Heat Guard solar film has been installed on a Tesla Model 3 for about 30 days.
  • The film is securely attached using 3M VHB double-sided tape.
  • The film's form factor is very convenient.
  • No wind noise or loss of vehicle efficiency has been observed.
  • The film covers the glass roof from the beginning to the end of the windshield without obstructing the view.

Technical Specifications and Connection

Technical specifications of the panels, their power, current, and connection capabilities (parallel/series) depending on the charging station are described in detail.

  • Each panel has a power of 125W and a current of 6A.
  • Panels can be connected in parallel (for low voltage) or in series (for high voltage).
  • The Pecron F3000 charging station requires a series connection (50V, 12A) for correct panel identification.
  • With a parallel connection, low voltage may cause the station to not recognize the panels.

Installation Process and Fastening Reliability

The installation process requires care due to the strength of the 3M VHB adhesive tape, which becomes practically permanent after the protective layer is removed.

  • Installation requires time and precision.
  • 3M VHB tape is very strong; once the protective layer is removed, it is difficult to remove the panel without damage.
  • The tape does not damage the car's glass, but it can damage the panels themselves during removal.
  • The author is surprised by the tape's strength, with panels withstanding speeds over 80 mph.

Thermal Mode and Roof Contact

It is explained that the panels do not directly contact the glass thanks to a tape interlayer, which prevents them from overheating and does not affect the temperature underneath them.

  • The panels do not directly touch the car's glass roof.
  • There is adhesive tape between the panels and the glass, providing an air gap.
  • This prevents overheating of the panels and the car's interior.

Practicality and Visibility

The author plans to keep the film on the car for the entire duration of ownership, noting its practicality and convenience, despite partially blocking the view through the roof.

  • The author intends to use the film as long as they own the car.
  • The film is very practical, requiring no removal or installation.
  • The view through the panoramic roof is partially obstructed, but this is not an issue for the author.
  • The film helps block sunlight, which is relevant in hot climates.

Cost and Payback

The kit cost around $450, which the author considers a justified investment given the daily use and effectiveness of the panels.

  • The kit cost approximately $450 USD.
  • The purchase was made through EarthTech Products.
  • The author considers the price fully justified.
  • The solar kit is used daily immediately after getting into the car.

Performance and Charging

In conditions of variable cloudiness, the panels generate 135-138 W, and in full sun, they reach the declared 250 W, effectively charging the Pecron charging station.

  • Under variable cloudiness, the panels generate 135-138 W.
  • In full sunlight, the panels reach the declared power of 250 W.
  • The panels effectively and quickly charge the Pecron F3000 charging station.
  • The kit is also available for Tesla Model Y (300 W).

Aesthetics and Application

The author emphasizes the elegant appearance of the panels and their value for camping and off-grid living, especially for Model Y owners.

  • The appearance of the panels is described as "very elegant".
  • The author considers the kit an excellent investment.
  • There is a 300W kit for the Tesla Model Y.
  • The film is ideal for camping and off-grid living if roof visibility is not important.