Filter

With two decades as a trusted leader in refrigeration compressors and their critical components, ascompressors.com understands that a clean and contaminant-free refrigerant circuit is paramount to system longevity and efficiency. Filters and filter-driers are indispensable guardians of your refrigeration and AC systems, meticulously removing moisture, acid, and solid contaminants that can cause catastrophic damage to your compressor and other sensitive components. As your dedicated supplier, we offer a comprehensive range of high-quality filters designed for the rigorous demands of commercial and industrial cooling applications.

A filter's primary role is to protect the compressor and expansion valve from impurities. Moisture, if not removed, can combine with refrigerant to form corrosive acids, leading to motor winding damage and component failure. Solid particles, such as metallic shavings or debris from system wear, can clog expansion valves and score compressor internal parts. By maintaining refrigerant purity, filters ensure optimal system performance, reduce maintenance costs, and significantly extend the lifespan of your valuable equipment.

Core Filter Series and Key Products:

Our extensive inventory includes a variety of filters and filter-driers, carefully selected for their filtration efficiency, moisture absorption capacity, and robust construction. We focus on providing solutions that offer unparalleled protection and peace of mind:

  • Liquid Line Filter-Driers: These are installed in the liquid line of the refrigeration system, typically after the condenser and before the expansion valve. They are the primary defense against moisture, acid, and solid contaminants. We offer models with various desiccant blends (e.g., molecular sieve, activated alumina) to optimize moisture absorption and acid removal for different refrigerants (e.g., HFC, HCFC, CFC, HFO). Key types include:

    • Hermetic Filter-Driers: Sealed, non-serviceable units for permanent installation.

    • Replaceable Core Filter-Driers: Featuring a reusable shell and replaceable desiccant cores, ideal for larger systems requiring periodic servicing.

  • Suction Line Filters (Catch-All Filters): Positioned in the suction line before the compressor, these are crucial for protecting the compressor from large debris or contaminants that might be circulating, especially after a compressor burnout or system repair. We supply various sizes and filtration levels, including models designed for acid removal after a burnout.

  • Strainers: While often integrated into filter-driers, standalone strainers are used to capture larger solid particles, preventing them from reaching sensitive components. These are common in larger industrial systems or at pump inlets.

  • Oil Filters: For systems with oil separation and return lines (especially screw compressors), dedicated oil filters ensure the lubricating oil remains clean and free of particulate matter, which is critical for compressor bearing and rotor longevity.

We ensure our filter offerings come in a range of connection types (solder, flare), sizes, and capacities to match diverse system tonnage requirements and installation configurations. Many of our filter-drier products also feature a sight glass with a moisture indicator, allowing technicians to visually monitor refrigerant flow and the presence of moisture, signaling when a drier replacement might be needed.

Essential Applications and Industries for Our Filters:

The uncompromising purity and protection provided by our high-quality filters are vital across a broad spectrum of commercial and industrial cooling applications:

  • Commercial Refrigeration: Supermarket display cases, walk-in coolers, reach-in freezers, and beverage chillers, ensuring food safety and equipment reliability.

  • Industrial Refrigeration: Large cold storage warehouses, food processing plants, breweries, and chemical industries, where system uptime and product integrity are critical.

  • HVAC Systems: Central air conditioning units, chillers, and large air handling units for commercial and industrial buildings, optimizing efficiency and preventing costly breakdowns.

  • Transport Refrigeration: Reefer trucks, containers, and railway cars, where robust filtration is essential to withstand harsh conditions and protect perishable goods.

  • System Start-ups & Burnout Cleanups: Absolutely crucial during initial system charging and especially after a compressor burnout to meticulously remove all contaminants and prevent repeat failures.

Innovation, Reliability, and Unrivaled Expertise:

At ascompressors.com, our 20 years in the refrigeration field have taught us that investing in the right filter is one of the most cost-effective ways to protect your entire system. Contaminated refrigerant is a silent killer of compressors and expansion valves. By choosing our high-quality filters, you're investing in enhanced system longevity, reduced maintenance frequency, improved efficiency, and ultimately, significant cost savings. Our technical team possesses the deep knowledge required to assist you in selecting the ideal filter or filter-drier for your specific application and refrigerant, ensuring optimal protection and performance. Trust us to deliver purity and peace of mind for your cooling solutions.

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Why Shop for Compressors at "A&S Aerodynamic"


Here at A&S Aerodynamic, we offer a wide range of refrigeration compressors from various brands and models. Our products are sourced from reputable brands in the industry, so you can be sure they’re made to fit OE specifications.


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.


Need your compressors as soon as possible? Don’t worry; our warehouses are strategically located across the country to ensure fast, efficient shipping. 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!!


Filter Buyer's Guide

Pre-Order Inquiry
Pre-Order Inquiry: The "Identity First" Guide

The Nameplate is Key: The model number alone is sometimes insufficient. We request a clear photo of the manufacturer’s metal nameplate. This confirms the specific Series, Voltage, and Bill of Material (BOM) number.

Refrigerant Verification: You must confirm the gas type (e.g., R134a, R404A, R290, or R410A). Using the wrong refrigerant in a Filter compressor designed for a different gas will lead to immediate failure and void the warranty.

Voltage & Frequency Check: Global power grids vary. Whether you need 115V/60Hz (USA), 220V/50Hz (Europe/Asia), or 3-Phase 380V, this must be explicitly confirmed during the inquiry stage to prevent electrical burnout.

Eliminate compatibility errors before the order is placed. To ensure you receive the exact compressor needed for your HVAC or refrigeration system, we adhere to a strict "Identity First" protocol.
Parameter Matching Testing Reports
Technical Validation: Parameter Matching & Testing Reports

Application Matching: We verify if your application requires LBP (Low Back Pressure for freezers), MBP (Medium), or HBP (High Back Pressure for A/C and chillers). Installing an LBP compressor in an HBP application will cause the motor to overheat.

Performance Benchmarking: Before shipment, units undergo rigorous testing for volumetric efficiency, motor amperage draw, and noise levels

The Test Report: For peace of mind, we can provide a Quality Inspection Report or a video of the Filter compressor under load test, proving it holds pressure and operates within factory specifications before it leaves our facility.

Prove performance and reliability through data. Once the model is identified, we focus on technical validation and quality control.
Supply Strategy: Inventory Matching, Batch Production
Supply Strategy: Inventory Matching & Batch Production

Spot Buy (Ready Stock): For urgent repairs, we leverage our global inventory of popular brands (Tecumseh, Copeland, Danfoss) to offer "2nd-Day Dispatch" on common Filter models.

Batch Production (OEM Orders): For distributors or appliance manufacturers requiring 50+ units, we schedule a production run. This typically requires a 2-4 week lead time but offers significant cost savings.

Condition Clarity: We clearly distinguish between "Factory New" (fresh production) and "New Surplus" (older stock). We allow you to choose based on your budget and warranty requirements.

Optimize lead times based on your urgency and volume. We offer flexible solutions depending on whether you are replacing a single unit or stocking up for manufacturing.
Global Shipping
Logistics & Distribution: Global Shipping

Robust Crating: We do not use standard cardboard for international freight. All compressors are bolted to a pallet and sealed in fumigated wooden crates compliant with ISPM 15 standards for global entry.

Upright Transport: Compressors must remain upright to prevent oil from entering the compression chamber (which causes "liquid slugging"). Our packaging includes "This Side Up" shock sensors and indicators.

Customs & Documentation: We handle the complex paperwork, including Commercial Invoices and Certificates of Origin, ensuring your goods clear customs smoothly whether shipping via DHL Air Express or Sea Freight to any port in the world.

Ensure the heavy, precision equipment arrives undamaged. Filter compressors are heavy, oil-filled components that require specialized handling for international transport.