
Guangdong Sunrain Air Source Energy Co., Ltd. manufactures air source heat pumps and related hot water and thermal energy systems, supported by strong R&D and advanced testing capabilities.
Guangdong Sunrain Air Source Energy Co., Ltd. develops, manufactures, and markets renewable-energy heating solutions, with a focus on air source heat pumps for industrial, commercial, and residential applications. The product scope covers heat pump water heaters, heating and cooling heat pumps, swimming pool heat pumps, EVI and inverter heat pumps, heat pump dryers, water tanks, and heat pump–solar composite solutions.
The company operates a dedicated heat pump production base in Shunde, Guangdong Province. Backed by an R&D team of more than 50 experienced engineers, Sunrain supports product development from design through verification and reliability testing. The company has invested nearly RMB 10 million in advanced laboratories, with testing capabilities ranging from small units to commercial heat pumps up to 300 kW.
Sunrain emphasizes end-to-end quality management across development, testing, production, installation, and service. With multiple specialized production lines—including domestic and commercial heat pump lines as well as water tank, controller, and metal cabinet lines—the factory supports high-capacity, automated manufacturing for global buyers seeking efficient, renewable thermal solutions.

Supported by a strong R&D team of more than 50 professional and experienced engineers, the company advances product design, verification, and performance optimization for a full range of heat pump solutions.
A complete quality management system controls the full process from heat pump development and testing to production, installation, and service, supporting consistent performance across applications and climates.
Nearly RMB 10 million has been invested in advanced laboratories capable of testing products from small heat pumps to commercial systems up to 300 kW, strengthening validation for demanding projects.
Guided by a healthy and sustainable development concept, the company promotes new energy products worldwide and advances cleaner, more efficient thermal solutions.
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