Company

Dentwiton is a specialist heat pump manufacturer established in 2004, with a long-standing focus on the design and production of heat pump systems for residential and commercial applications.

As one of China’s established heat pump suppliers, Dentwiton offers a diverse product portfolio including EVI low-temperature heat pumps, multi-functional heat pumps, full DC inverter heat pumps, ground source heat pumps, water source heat pumps, heat pump water heaters, as well as hydraulic system components. All products are manufactured in compliance with EN14511 standards and are certified with CCC, CE, CB, KEYMARK, SAA, RoHS, TÜV, and ErP, meeting the regulatory requirements of multiple international markets.

To continuously enhance product quality and system reliability, Dentwiton collaborates with leading global component suppliers such as Panasonic, Copeland, Grundfos, and SANYO, integrating proven technologies into its heat pump solutions.

Over the years, Dentwiton has built its reputation on technically sound products, consistent quality, and professional partner support. Driven by ongoing innovation and practical engineering expertise, the company is committed to delivering reliable and energy-efficient heat pump solutions to partners worldwide.

Factory Production Line

Dentwiton operates a modern heat pump manufacturing facility located in Zhaoqing, Guangdong, China, with a total building area of 30,000 m². The facility is equipped with four dedicated production lines, enabling a monthly output of over 15,000 heat pump units, primarily focused on residential air-to-water heat pump products.

Advanced manufacturing equipment, combined with experienced production teams, ensures stable output and consistent build quality. The production site is supported by 20 senior R&D engineers and multiple low- and ultra-low-temperature performance testing laboratories, enabling close integration between product development, testing, and mass production.

With an annual production capacity exceeding 150,000 units, Dentwiton is able to support both residential and commercial heat pump projects with reliable lead times and flexible customization options. Through structured production processes and strict quality control at each stage, Dentwiton delivers efficient, reliable, and durable heat pump solutions to partners worldwide.

Technical Information

Advanced DC Inverter Technology

By integrating DC inverter compressors with intelligent inverter control systems, Dentwiton heat pumps are able to operate efficiently across a wide load range. At start-up or during high demand, the system runs at higher frequencies to deliver rapid heating. Once the target temperature is reached, the inverter adjusts to low-frequency operation, significantly reducing energy consumption while maintaining stable comfort.

This dynamic modulation enables higher seasonal efficiency, lower operating costs, and extended component lifespan.

Smart Remote Control System

Dentwiton heat pumps are equipped with a self-developed smart remote control platform, supporting remote operation via mobile APP. The system features highly integrated control logic, stable communication, and an intuitive user interface.

Users and service partners can easily monitor system status, adjust operating parameters, and access key performance data, enabling simpler operation, faster troubleshooting, and improved user experience.

Reliable Low-Temperature Operation

For cold-climate applications, Dentwiton applies EVI (Enhanced Vapor Injection) technology, significantly improving heating capacity and system stability under low ambient temperatures.

Compared with conventional heat pump designs, EVI technology enhances heating output by up to 30% in cold conditions, ensuring reliable performance in harsh winter environments and extending the operational range of air-source heat pumps.

Intelligent Defrost Control

Dentwiton has independently developed a PID-based intelligent defrost control strategy. The system precisely evaluates real operating conditions and initiates defrost cycles only when necessary.

This approach avoids unnecessary or excessive defrosting, reduces energy loss, and prevents system instability, resulting in higher overall reliability, improved efficiency, and longer system life.

Quality Control

Quality Control System

Dentwiton implements a structured, multi-stage quality control system throughout the entire manufacturing process, ensuring stable performance, reliability, and long-term durability of every heat pump unit.

System Design Quality Control

♝ System architecture design validation
♝ Component and module design review
♝ Enclosure and structural design verification
♝ Refrigerant piping layout design
♝ Electrical wiring and control logic design

Incoming Material Quality Control

♝ Supplier evaluation and qualification management
♝ Incoming material inspection and verification
♝ Heat exchanger leakage inspection
♝ Electrical unit and component inspection

Piping & Component Processing Quality Inspection

♝ Pipe bending and forming inspection
♝ Drilling and opening of piping interfaces
♝ Expansion and narrowing process control
♝ Surface smoothing, polishing, and cleaning
♝ Brazing and welding quality inspection

Assembly Process Quality Control

♝ Welding quality control and inspection
♝ Leakage testing of refrigerant circuits
♝ Vacuum process verification
♝ Refrigerant charging accuracy control
♝ Piping insulation bonding inspection
♝ Acoustic insulation and damping material application
♝ Control system wiring and connection verification

Certification

Certifications & Compliance

Dentwiton manufactures heat pump products in compliance with EN14511 standards and maintains a comprehensive certification system to support global market access.

Product Certifications

♚ Certified according to EN14511 for air-to-water heat pump performance
♚ Certified with CCC, CE, CB, Keymark, ISO, SAA, and RoHS
♚ Compliant with ErP regulations for energy-related products
♚ Approved by TÜV SÜD for product safety and performance evaluation

Energy Efficiency Certification

♚ Dentwiton’s latest DC inverter heat pump series has achieved the ErP A+++ energy label, verified by TÜV SÜD, representing the highest energy efficiency class currently available
♚ The ErP energy labeling system (A+++ to G) provides a transparent and standardized method for evaluating heat pump energy performance

Market Access & Certification Support

♚ Support partners in preparing and applying for market-specific certifications
♚ Assist with technical documentation, testing coordination, and compliance requirements
♚ Help partners accelerate product approval and import processes in their target markets

Proprietary

Patents & Innovation

Backed by long-term investment in research and development, Dentwiton has built a solid foundation of intellectual property and technical innovation in the heat pump industry.

Authorized Patents & Intellectual Property

♛ A total of 240 authorized patents, including 35 invention patents
♛ Patents covering key technologies such as EVI (Enhanced Vapor Injection), advanced defrosting strategies, and low-noise system design
♛ 7 registered copyrights, including
  – 4 software copyrights related to control and system logic
  – 3 design and artistic copyrights

Innovation & R&D Recognition

♛ Recognized with multiple national-level invention excellence awards
♛ Awarded high-tech product certifications based on technical innovation and practical application
♛ Continuous investment in R&D to support long-term product differentiation and system-level innovation

Component Quality Assurance

Dentwiton operates a mature and well-established supply chain system, built on long-term cooperation with internationally recognized component manufacturers. Through years of collaboration, Dentwiton has developed stable partnerships with leading global brands such as Mitsubishi and Panasonic, forming a solid foundation for product quality and system reliability.

Key components—including compressors, electrical parts, and control-related elements—are sourced from proven, industry-leading suppliers, ensuring consistent performance, long-term availability, and stable quality across different product generations. These long-standing partnerships allow Dentwiton to integrate reliable components while maintaining strict quality standards throughout the manufacturing process.

By combining trusted global components with Dentwiton’s own system design, testing, and quality control processes, the company is able to deliver heat pump solutions that offer high operational stability, long service life, and reduced lifecycle risk. This component-level quality assurance is one of Dentwiton’s core strengths in supporting long-term ODM and OEM cooperation.

Laboratory

Certified Testing Laboratories

Dentwiton has established a comprehensive testing and validation system, combining in-house laboratories with strategic cooperation laboratories operated together with internationally recognized certification bodies. This structure ensures full-cycle product verification from development to mass production.

Performance & Capacity Testing

♝ Four performance testing laboratories in total
  – Two in-house performance laboratories located within Dentwiton’s manufacturing facility
  – Two co-established performance laboratories operated in close cooperation with SGS, Intertek, and TÜV, all located within the same industrial park
♝ Comprehensive performance testing including heating and cooling capacity verification under standard and extended operating conditions

Low-Temperature & Extreme Condition Testing

♝ Dedicated ultra-low-temperature testing laboratories, supporting operation verification down to –45°C
♝ Low-temperature durability and stability testing for cold-climate heat pump applications
♝ The –45°C testing capability is recognized as a benchmark within the domestic heat pump industry

Acoustic & Reliability Testing

♝ One professional acoustic laboratory for heat pump noise and sound performance evaluation
♝ Four long-term operation (endurance) testing laboratories for continuous reliability verification
♝ One transport vibration testing laboratory to simulate logistics and handling conditions
♝ One salt spray testing laboratory to evaluate corrosion resistance and long-term material durability

Third-Party Recognition & Cooperation

♝ Laboratories recognized by internationally respected organizations
♝ Long-term strategic cooperation with SGS, AHRI, Intertek, and TÜV
♝ Testing capabilities aligned with international standards to support global market certification and compliance

We have focused on residential air-to-water heat pump technology from the start. That

focus shows up in the details installers care about: defrost behaviour, low ambient

performance and the indoor modules that make a system complete.

With years of dedicated focus on residential air-to-water heat pumps, we have built deep technical expertise and extensive product development experience. This foundation enables us to support customers with faster, more efficient, and truly differentiated OEM/ODM development.

We also collaborate with external accredited laboratories to accelerate testing and validation, ensuring every customized product meets market requirements with confidence.

With a stable 25-35 days lead time, Dentwiton ensures reliable and efficient delivery for OEM/ODM orders. Beyond customized products and responsive after-sales service, we also provide partners with full marketing support—including product brochures, promotional posters, and marketing videos—to help accelerate market launch.

In addition, we offer tailored training programs and professional training materials to equip sales and technical teams with the knowledge they need to succeed.