Control Components

Control components are the “brain” of chillers, responsible for signal reception, command execution and parameter adjustment, ensuring stable and precise system operation. HSTTEC supplies a full range of control parts for HVAC and refrigeration systems.

Covers mainstream electric actuator brands including Belimo, Honeywell, Siemens, Johnson, Schneider and Danfoss. Suitable for HVAC and refrigeration valve systems, it features fast response, stable operation and high adjustment accuracy. It precisely controls valve opening to realize automatic regulation of flow and temperature, serving as core basic executive parts for building automatic control systems.

Covers mainstream frequency converter brands including Danfoss, ABB, Siemens, Schneider, Yaskawa and INVT. Widely applicable to HVAC fans, circulating water pumps and various industrial and commercial motors. It precisely adjusts motor speed for dynamic working condition adaptation, effectively reducing energy consumption and operating noise, and optimizing equipment efficiency for energy-saving renovation and daily maintenance.

Covers mainstream low-voltage electrical brands including Schneider, ABB, Siemens, Eaton, CHINT and Delixi. Including breakers, contactors and relays, it ensures safe power distribution and circuit protection for chiller and HVAC systems, ideal for batch maintenance replacement.

We supply genuine original flow switches of ALCO, WIKA, KOBOLD, Ifm and Gems. As core hot-selling safety parts for chillers with complete models and sufficient stock, it professionally monitors water flow conditions, triggers protection against abnormal flow and water shortage, and prevents chiller damage for stable long-term operation.

We supply genuine original pressure switches of ALCO, Danfoss, Emerson, Saginomiya, KOBOLD and WIKA. Core safety control parts for chillers with complete models and sufficient stock. It precisely monitors pipeline pressure in refrigeration and water systems, automatically provides high/low pressure protection to avoid equipment overload and failure, ensuring safe and stable unit operation.

Covers mainstream temperature and humidity controller brands including Honeywell, Siemens, Johnson Controls, Schneider and Danfoss. Popular hot-selling parts for HVAC and building automation. It collects real-time environmental data and realizes automatic equipment adjustment with high precision, suitable for building automation and constant temperature and humidity control scenarios.