Key ParaM.:R134a, R404A, R407A, R407F, R448A, R449A, R452A, R513A,380-460V
Brand name:Danfoss
Model number:121U8521
Product Condition:Factory New / New Surplus
Packaging:Wooden Box / Carton
Delivery time:7~14 days (About)
Warranty:1 Year
Parameter details:Download PDF
Payment methods:![]()
* PayPal and credit card payments for sample orders, Large-value and bulk orders can be settled via T/T with official invoice. Any brand and model—inquire directly!










The Danfoss Compressor is high quality!
We can also provide the following models
SM124A7CAG
SH590B6ACY
SH300A3ACR
MT100HS4EVE
SM110A4RD
SH780A4ABI
MT064HM3YVE
SH301B7ALJ
SY380A9XM
SM148A7AQ
DSH184A9ABC
SY380A4CAW
SH760B6ALU
SY380A7CQ
SZ120A4XZ
HRH040U7LP6 120U1241
SZ120A6RL
SH195B9AAJ
SZ175A9CAJ
SH368B7ALR
SM175A7CW
SH282A4AAI
SH161A4AJT
SH105A7ACL
MTZ044HJ4CVE
LLZ018T2LQ9A 121L9549
SH322B3ACA
SH760A6ABA
MT018JA3EVE
SM161A6PAV
SH345B6AAJ
DSH140A7ALT
SH535A6ALH
SH281B9ALU
SH161B9ALS
SH282A9ABU
SH420A4AAC
SH535B7AAT
SM161A7PBG
MT125HU5JVE
DSH140A7AAU
SZ161A4YS
SH482A6ALM
SH242B3AAT
SZ110A7CBQ
MTZ044HJ1MVE
SY300A4AT
SY300A7AF
SY240A3XD
SM124A4VJ
SH760B4ABW
SZ300A7VZ
SM175A7CG
MT032JF5GVE
SH282B9ALC
SM147A6RE
SH260A9ALP
SH725A3ABQ
SH184A4ABP
SH725B4ALL
SH970B4ABN
MT080HP7PVE
DSH282
SM100A9VF
SM100A3PAN
MT125HU6RVE
SH304A9ACV
SZ147A4XM
SH090A4AJP
WSH140A3ALE
SH210B9AAM
SZ110A9PBA
SH380A9AKA
SH475B9ACK
MT032JF9HVE
SH780A6ABQ
SH120A7ABS
SH105A3ALO
SM147A7VC
SZ161A3XZ
WSH090A4ALF
VTZ038AJNR1B
DSH120A9AAN
SH475A3ACT
MT040JH5MVE
MT056HL7CVE
SH380B4ALM
SH184A9ALG
SZ148A6CAH
SZ084A3AP
SH301B7ABI
SM124A4RO
SH475B6AAD
SH240A6AJA
SY380A6YW
SH865B7ACS
DSH140A9ALF
SH380B4ACI
SH590A6ACE
SH260A3AAZ
SH090B6ACW
SH180A4AJI
SH195B9ACU
SZ240A3PN
MTZ072HN7WVE
SH140B7ACL
NTZ048AGNR1A
SH230B7ABA
DSH120A3ALL
SH301B9ACL
SH260B7AAY
SM084A3PBY
SZ147A9RK
SH475A7ABZ
SM112A9PD
SH322B6ABV
SH180A9ACX
MT072-5VI
SZ100A7RM
MT036JG1WVE
SM161A7CS
SH184A3ALZ
SH281B3AAN
SZ185A7RJ
SH560A6ACM
SZ161A3RP
SH184B9ABM
SM185A9CBM
SM161A4YV
SH485A4ALK
SM084A4XF
SY380A7CZ
SH295B9AAG
SH105A6ACU
SZ148A9AN
SM148A4PAE
SH195B9ACG
SH360B4ABE
SM112A9CAW
SM124A9RH
SM110A7XS
SZ185A9PAW
SZ185S3QC SZ185-3QAI
For more information,please contact us freely
Please confirm the compressor is in stock and verify its core specifications before purchasing. We prioritize matching you with inventory from your local distributor, We provide actual photos for your confirmation before packaging and shipping.
Please select the expedited option at checkout. For lightweight items, you can request "overnight or 2-day shipping". Our customer service will then confirm the expedited schedule (including preparation and shipping), with most orders delivered globally within 2-5 days.
Please ensure that you are purchasing a genuine product, which includes original manufacturer certification and professional test reports.
Unless caused by human error, we promise free replacement or full refund. We provide a total of 3 years of warranty coverage, comprising a 1-year original manufacturer's warranty and an additional 2-year(In-House Warranty) extended warranty for repairs and support.
We offer a repair kit that includes essential installation parts prone to wear and tear. For details, please contact our customer service.
We support a variety of mainstream payment methods (e.g., Visa, PayPal, TT). Our checkout process is quick and secure, with orders processed within the same day.
If you require a single, high-volume delivery, please inquire about our bulk order or wholesale pricing. We can then coordinate a delivery schedule and shipping time.
1. Before shipping, we will send you photos of the actual product for your confirmation ( eg. nameplate, appearance, and report).
2. The product comes with a 1-year manufacturer warranty policy and 3-year in-house warranty.
3. If the product is damaged during transportation or cannot be repaired due to non-human-caused within 1 year, no return, we will directly refund or resend the new product.
4. For select items, we will include a repair kit ( Special Needs Customer Service ).
5. Enjoy a worry-free experience throughout the entire process. Feel free to request quotes and place orders with confidence, we will provide 5-star service until you are satisfied.
6. Shipping and Taxes: See Quotation.
A: The choice depends on capacity and application. We recommend: Screw for large, stable loads and high efficiency; Reciprocating for smaller capacity or specialized low-temperature use; and Centrifugal for very high-capacity HVAC/chiller applications. We offer a data-driven sizing analysis.
A: Our systems are designed with industry-standard interfaces and utilize high-quality, globally recognized components. We ensure that critical accessories and spare parts are readily available through our own supply chain and cross-reference to minimize emergency lead times.
A: We perform a comprehensive heat load analysis that considers ambient temperature, product load, air infiltration, insulation U-values, and processing time. We use this data to select a compressor with the optimal capacity and EER/COP (Energy Efficiency Ratio/Coefficient of Performance) for your target temperature.
A: We provide a comprehensive warranty package (typically $12$-$24$ months on the compressor). We maintain a global inventory of critical spares and commit to an emergency parts lead time (e.g., $24$-$72$ hours to major industrial hubs) to ensure minimal operational disruption.
A: We provide a detailed TCO breakdown encompassing purchase, installation, maintenance, and projected energy costs. We prioritize Variable Speed Drive (VSD) compressors and advanced control systems to modulate capacity, minimizing energy consumption during part-load operation and maximizing long-term savings.
A: Absolutely. Our primary strength lies in supply capability. Whether it's OEM manufacturing or global inventory searches—from components to complete units—we can match your needs with the nearest partner's inventory for rapid delivery. Our global alliance enables transactions at wholesale agency rates. Welcome aboard! Cheers!!