Yamato Juken Continues to Provide Highly Energy-Efficient Homes, Winning 'House of the Year' for 16 Consecutive Terms

Yamato Juken Co., Ltd. (Headquarters: Kobe, Hyogo; Representative Director: Yoshiki Kawamoto; hereafter "Yamato Juken"), a custom home builder, has been awarded the House of the Year for the 16th consecutive term.

■ 16 Consecutive Years of Recognition

Yamato Juken, which specializes in highly energy-efficient custom homes, received the Special Excellence Award at the House of the Year 2025. Since its first entry in 2009, the company has been recognized for 16 consecutive terms as a builder of "excellent homes that contribute to energy conservation and CO2 reduction." Furthermore, the company has won the Grand Prize a record four times (in fiscal years 2014, 2017, 2023, and 2024), including an unprecedented two consecutive years.

■ Award-Winning Product: Enege AF+

The winning model, "Enege AF+," achieves an extremely high thermal insulation performance with a UA value of 0.28. It exceeds HEAT20/G2 grade and insulation grade 6 standards, featuring high airtightness with a C-value of 0.5 or less. It is equipped with the "Air Flow System" for indoor air circulation and the "AQUA Sitter," a ceiling-embedded humidification unit developed in collaboration with Panasonic. This system allows for temperature and humidity control throughout the house using only two air conditioners. Additionally, the company was highly evaluated for its contributions to carbon neutrality, including proposals for "energy self-sufficient and resilient homes" combining solar power, V2H, and storage batteries, as well as its efforts in off-grid housing, use of eco-friendly materials, and waste reduction during construction.

■ About House of the Year

Organized by the Japan Center for Area Development Research, this award recognizes excellent homes that contribute to total energy conservation and CO2 reduction by considering the building structure and equipment as a set. Evaluation criteria include the energy-saving performance of the building envelope and equipment, the adoption of diverse energy-saving methods, health and comfort, and efforts to promote energy-efficient housing. (https://www.jcadr.org/hoty/)

■ Commitment as an Award-Winning Company

Yamato Juken's mission is to "bring Japanese housing up to global standards" by promoting only highly airtight, highly insulated, and energy-efficient homes. For many years, the company has pursued the creation of healthy, comfortable homes with minimal temperature differences—a standard taken for granted in Western countries—to make Japan's living environment safer and more secure. The company believes that promoting such energy-efficient homes leads to a reduction in CO2 emissions and contributes to the improvement of the global environment. By winning this award for 16 consecutive terms, the company reaffirms its commitment to fulfilling this mission as a leader in promoting energy-efficient housing.

＜Company Overview＞

Company Name: Yamato Juken Co., Ltd. (URL: https://www.yamatojk.co.jp/)