Hangzhou Kairui Mechanical and Electrical Engineering Co., Ltd. is a trade and technology-based engineering company specializing in the maintenance and repair of central air conditioning systems and the sale of parts.

Hangzhou Kairui Mechanical and Electrical Engineering Co., Ltd. is a specialized company focused on providing central air conditioning commissioning, repair, maintenance, cleaning, as well as central air conditioning host unit repair, automatic control and energy efficiency, and host unit parts as its core business.
Our company offers Trane UC800 and CH530 software programs, Trane air conditioning maintenance programs, and provides computer repair, binding, upgrading, and replacement of damaged parts services. We provide maintenance services for all Trane screw machines, centrifugal machines, scroll compressors, and lithium bromide units that use the above control systems.
The company's main business includes:
1. System Services: Commissioning, repair, maintenance, and overhaul of imported and domestically assembled central air conditioning host units; power measurement and energy-saving transformation of air handling units and motors; freeze protection and replacement of chilled and hot water coils; cleaning and washing of high, medium, and low-efficiency air filters; internal and external cleaning of fan coil units; cleaning and maintenance of chilled and cooling water systems; and integrated transformation of host units, water pumps, and cooling towers.
2. Parts Support: Lubricants for imported and domestically assembled electric cooling air conditioning host units, oil filters, refrigerant filters, refrigerants, water inlet temperature sensors, main control modules, display modules, input and output modules, start modules, time relays, air switches, electronic expansion valves, CH530, UC800 control modules, expansion valves, angle valves, bearings, oil pumps, guide vane motors, compressor overhauls, chemical cleaning agents, pre-filming passivators, high-efficiency algaecides and bactericides, belts, pulleys, bearings, surface coolers for air handling units, high, medium, and low-efficiency air filters, water pump bearings, etc.
3. Discounted provision of Trane UC800 and CH530 software programs, Trane air conditioning sales and maintenance programs, and services for computer maintenance, binding, upgrading, and replacement of damaged parts.
4. Carrier commissioning software, Carrier ProView software, decrypted, allowing direct login without a Carrier account or password.
5. We have extensive experience in repairing Trane TRANE, Carrier CARRIER, YORK York, and FRICK screw compressors and centrifugal machines. Our main services include repair of Trane RTWC, RTWD, RTWS series water-cooled screw compressor chilled and hot water units, Trane RTAC air-cooled chilled water units, Trane RTXA air-cooled screw heat pump units, Trane central air conditioning equipment repair, and cold storage equipment repair. YS, YK, YT, YCWS, YEWS, and air-cooled and water-cooled unit series, 19XR, 19XL, 30XHC/Y, 30XW, and other Carrier system chilled water units.
Centrifugal and screw compressor maintenance and repair services include: Compressor stator and motor repair, compressor oil replacement, pressure sensing equipment inspection and replacement, replacement of internal compressor bushings, connecting rods, pistons, gaskets, valve plates, and valve pieces, repair of Trane screw compressor male and female rotors, bearing replacement, slide valve repair, solenoid valve and load controller repair, oil circulation system maintenance and cleaning, compressor body cleaning and repair, as well as replacement and sale of various compressor-related parts.
Central air conditioning unit maintenance and repair services include: Refrigeration compressor repair, inspection and replacement of various sensors, control circuit system inspection, refrigerant system cleaning, system leak detection and welding repair, condenser tube cleaning and descaling, cooling tower maintenance, unit replacement of refrigeration oil, replacement of refrigerant filters, replacement of dryers, and provision of regular inspection and maintenance services.
Nationwide coverage: Hangzhou, Suzhou, Shanghai, Nanjing, Beijing, Hefei, Fuzhou, Xiamen, Guangzhou, Shenzhen, Dongguan, Nanning, Guilin, Guiyang, Kunming, Changsha, Chongqing, Chengdu, Wuhan, Zhengzhou, Taiyuan, Xi'an, Dalian, Shenyang, Harbin, Hohhot, Lanzhou, Xining, Urumqi, etc.
Our services are available across the country, with coverage in major cities in all provinces and municipalities. We provide year-round on-site maintenance and repair services for central air conditioning brands such as Carrier, Trane, York, McQuay, Dunham-Bush, Climaveneta, Gree, Midea, Haier, Fitian, Daikin, Hitachi, LG, and others.
24-hour service hotline: 13606085660 (same number for WeChat), providing central air conditioning maintenance and repair services anytime, anywhere.