The company's main products are aluminum tube type two-phase heat exchangers. Custom Rear-Door Heat Exchanger Factory.
Core Dimensions: 1775 (L) x 86.6 (W) x 440 (H) mm
Mold Size: 9.52 x 25 x 21.65 mm
Fin Type: Corrugated foil fins (fin spacing 2.12 mm, fin thickness 0.15 mm)
Material: All-copper construction (2 mm aluminum plate)
The copper-tube aluminum-fin evaporator is designed to provide efficient, reliable, and durable heat transfer for a wide range of applications.
Its core measures 315 mm in length, 50.8 mm in width, and 63.5 mm in height, with an overall extended height of 281 mm and mold dimensions of 7 × 21 × 12.7.
This compact yet highly effective design allows for easy integration into HVAC systems, portable cooling units, and industrial thermal management setups, delivering consistent performance without occupying excessive space.
The heat exchanger features hydrophilic aluminum foil with a sheet spacing of 1.75 mm and a thickness of 0.105 mm, which increases the effective heat transfer area, improves condensate drainage, and ensures stable operation under varying environmental conditions.
Copper-aluminum welded piping provides secure, leak-free connections while optimizing refrigerant flow, combining the thermal conductivity of copper with the lightweight, corrosion-resistant properties of aluminum. The all-aluminum core, together with 1.5 mm aluminum sheet metal, ensures a lightweight yet durable structure capable of withstanding long-term operation.
A buyer compares two quotes for the same duty: a 9 kW direct-expansion evaporator for a rooftop unit. One supplier ships in 21 days, the other in 45. The price gap is 34 percent. Both drawings show the same face area, the same fin spacing, and the same tube diameter. The difference hides in three l...
READ MOREA maintenance technician stops in front of a rooftop unit that is blowing warm air on a hot afternoon. The filter is clean, the thermostat is correctly set, and both fans are running. The problem is almost certainly inside the sealed refrigerant loop. That loop, repeated in nearly every air conditi...
READ MOREWhen a chiller leaves the factory, its efficiency, reliability and operating cost have already been determined by a small set of design choices. The most consequential of those choices sit inside the refrigerant circuit: the evaporator, where heat is absorbed from the building water loop, and the c...
READ MOREA Rear-Door Heat Exchanger is commonly used in equipment where heat dissipation efficiency and installation space need to be carefully balanced. Unlike traditional heat exchangers installed in open areas, rear-door mounted systems require optimized airflow paths, compact structures, and reliable thermal performance within limited installation dimensions.
The effectiveness of a rear-door heat exchanger depends on several design factors, including fin arrangement, tube distribution, airflow direction, and heat load requirements. Proper structural planning helps improve cooling efficiency while reducing pressure loss, making the system more suitable for applications such as equipment rooms, industrial cabinets, and enclosed cooling environments.
Material selection directly affects the service life, manufacturing efficiency, and operating stability of heat exchangers. Rear-door heat exchangers often work in environments where dust, humidity, temperature changes, and long operating cycles may create additional challenges for component durability.
Hangzhou Yijie Refrigeration Technology Co., Ltd. has 12 years of deep expertise in heat exchangers and holds multiple core technologies. Breaking through the limitations of traditional copper material, the company adopts high-performance aluminum tube technology. This reduces material costs by more than 30% while offering significant advantages in mass production, helping customers achieve efficient production and reliable heat exchange solutions.
The company's products have passed 500-hour standard salt spray tests and 50,000 pressure cycle verification. Their corrosion resistance and compressive strength far exceed national standards, providing strong support for applications that require long-term operating reliability.
Different installation environments create different requirements for rear-door heat exchanger performance. For example, equipment installed in machine rooms may focus on continuous cooling stability, while enclosed industrial systems may require stronger resistance to environmental factors and easier maintenance access.
| Performance Factor | Impact on Heat Exchanger Operation |
| Airflow Organization | Determines cooling uniformity and prevents excessive temperature accumulation. |
| Tube Structure | Influences refrigerant circulation efficiency and heat transfer stability. |
| Surface Durability | Affects resistance against moisture, corrosion, and long-term environmental exposure. |
| Structural Strength | Ensures stable performance during repeated thermal and pressure changes. |
Rear-door heat exchangers are increasingly applied in systems where efficient heat removal is required without increasing overall equipment size. Their compact structure makes them suitable for enclosed environments where traditional cooling methods may have limitations.
With strong custom service capabilities, Hangzhou Yijie Refrigeration Technology Co., Ltd. provides heat exchanger solutions for various scenarios, including household AC, automotive AC, dehumidifiers, cold chain systems, eco-friendly equipment, machine rooms, and warehouses. This wide application experience allows heat exchanger structures to be adjusted according to different operating conditions and equipment requirements.
The long-term performance of a rear-door heat exchanger is influenced not only by the original design but also by operating conditions and maintenance practices. Dust accumulation, airflow blockage, and environmental contamination may gradually reduce heat transfer efficiency if not properly managed.
Regular inspection of airflow passages, surface cleanliness, and operating temperature conditions helps maintain stable cooling performance. Selecting a heat exchanger with verified corrosion resistance and pressure durability can also reduce unexpected downtime and support more reliable equipment operation throughout its service cycle.
Rear-Door Heat Exchanger Manufacturers 
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