Refrigerator evaporator coil price manufacturers

Buyers must prioritize material integrity and thermal efficiency. Ensure the coils are made from high-grade aluminum (1000 or 3000 series) or deoxidized phosphorus copper (C12200) for optimal heat exchange. The tube wall thickness should typically be between 0.5mm and 0.75mm to prevent refrigerant leakage. Additionally, verify the hydrophilic coating on fins, which prevents water bridging and enhances defrosting efficiency.

Compatibility hinges on dimensional precision and refrigerant type. You must confirm the Btu/h cooling capacity matches your compressor's output. Request technical drawings to verify inlet/outlet tube diameters (common sizes include 6.35mm, 8mm, or 9.52mm) and the overall fin stack dimensions. Furthermore, ensure the coil is rated for the specific refrigerant used, such as R134a, R600a, or R290, as internal pressures and oil compatibility vary.

To ensure safety and durability, suppliers should provide UL or CE certification. Crucially, ask for leak detection test reports, specifically helium mass spectrometer leak testing with a sensitivity of at least 3g/year. For food safety and environmental compliance, ensure the materials meet RoHS and REACH standards, confirming the absence of hazardous substances in the coatings or alloys.

The price is primarily driven by raw material market rates (LME copper/aluminum prices) and customization complexity. Standard wire-on-tube evaporators are generally more cost-effective for domestic fridges, while finned-tube designs command a higher price due to increased surface area. Bulk volume discounts typically trigger at 500–1,000 units, potentially reducing the unit price by 15-25% compared to small-batch sampling.

Evaporator coils are fragile; pressure retention testing is your best safeguard. Require the supplier to ship coils pre-charged with dry nitrogen (0.02-0.05 MPa) and sealed with rubber plugs. Upon arrival, if the 'hiss' of escaping gas is absent when opened, the unit has a leak. Ensure the use of reinforced honeycomb cardboard packaging or wooden crates for LCL shipments to prevent fin deformation.

Focus on Total Cost of Ownership (TCO) rather than just the unit price. Negotiate for spare parts inclusion (e.g., 1-2% extra capillary tubes or sensors) and clear warranty terms (ideally 2-3 years). When sourcing via Made-in-China.com, prioritize Audited Suppliers who have undergone third-party onsite inspections by SGS or TÜV Rheinland to verify their actual production capacity.

Utilize Secured Payment services offered by reputable platforms like Made-in-China.com to ensure funds are only released upon proof of shipment. For high-value contracts, a 30% deposit and 70% balance against the Bill of Lading (B/L) is standard. Always conduct a pre-shipment inspection (PSI) to verify that the technical specs of the mass production match the approved samples.

Due to the high volume-to-weight ratio of evaporator coils, Sea Freight (FCL or LCL) is the most economical method. For urgent production line needs, Air Freight is possible but expensive. Ensure your supplier provides a Certificate of Origin (CO) to help you leverage Free Trade Agreements (FTAs) and reduce import tariffs in your destination country.