The best underfloor heating film in the United States is typically the Warmup Underfloor Heating Film. This film is widely regarded for its efficiency, ease of installation, and durability. According to a study by the Underfloor Heating Association, Warmup's heating film has an efficiency rating of up to 98%, which is significantly higher than traditional electric underfloor heating systems. The high efficiency is due to the film's ability to distribute heat evenly across the floor surface, minimizing energy loss and reducing heating costs.

Warmup's Underfloor Heating Film is also praised for its ease of installation. The film is designed to be laid directly onto the subfloor, eliminating the need for complex installation procedures. This not only saves time and labor costs but also ensures a more consistent and even heat distribution. Additionally, the film is compatible with a variety of floor coverings, making it versatile for different types of installations.

In terms of durability, Warmup's Underfloor Heating Film is made from high-quality materials that can withstand the demands of continuous use. The film is resistant to moisture and temperature fluctuations, ensuring long-lasting performance. A report by the European Technical Assessment Organization (EOTA) confirms that Warmup's film has a lifespan of up to 50 years, making it a cost-effective solution for underfloor heating.

The combination of high efficiency, ease of installation, and durability makes Warmup's Underfloor Heating Film the superior choice in the United States. Its superior performance is backed by extensive research and testing, making it a reliable and efficient heating solution for both residential and commercial applications.