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Filter Driers for Refrigeration & Air Conditioning

Welcome to Brooks Parts’ dedicated category for filter driers. Our range of high-efficiency liquid-line, suction-line and bi-flow filter driers from leading brands ensures optimal moisture removal, acid adsorption and particulate filtration—providing reliable protection and improved uptime for all types of refrigeration and air-conditioning systems.

Filter Driers for HVAC & Refrigeration | Brooks Parts
Danfoss DCL 162 Anti-Acid Dehydrator Filter – 1/4″ SAE Danfoss DCL 162 Anti-Acid Dehydrator Filter – 1/4″ SAE

Danfoss Anti-Acid Dehydrator Filter DCL 162 – 1/4″ SAE, 76×154 mm

Protect your refrigeration and HVAC/R system from acid corrosion and moisture damage with the Danfoss Anti-Acid Dehydrator Filter DCL 162. Made in India, this high-capacity filter features a 1/4″ SAE connection, a robust ø 76 mm copper housing, and a 154 mm length. Its molecular-sieve core rapidly absorbs acid and water vapor, safeguarding compressors,...
€65.56
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Danfoss DCL 163S Dehydrator Filter – 10 mm ODS, 76×148 mm Danfoss DCL 163S Dehydrator Filter – 10 mm ODS, 76×148 mm

Danfoss DCL 163S Anti-Acid Dehydrator Filter – ODS 10 mm, 76×148 mm

Extend the service life of your refrigeration and HVAC/R equipment with the Danfoss DCL 163S Anti-Acid Dehydrator Filter. Manufactured in India, this precision filter features 10 mm ODS fittings, a robust ø 76 mm copper housing, and a 148 mm length. Filled with high-capacity desiccant, it efficiently captures moisture and acidic by-products, protecting...
€67.90
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Danfoss DCL 164 Dehydrator Filter – 1/2″ SAE, 76×175 mm Danfoss DCL 164 Dehydrator Filter – 1/2″ SAE, 76×175 mm

Danfoss DCL 164 Anti-Acid Dehydrator Filter – 1/2″ SAE, 76×175 mm

Protect your refrigeration and HVAC/R equipment from acid corrosion and moisture damage with the Danfoss DCL 164 Anti-Acid Dehydrator Filter. Manufactured in India, this high-capacity filter features a 1/2″ SAE male fitting, a robust ø 76 mm copper housing, and a 175 mm length. Its premium molecular-sieve core efficiently absorbs water vapor and acidic...
€65.76
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Danfoss DCL 164S Dehydrator Filter – 12 mm ODS, 76×152 mm Danfoss DCL 164S Dehydrator Filter – 12 mm ODS, 76×152 mm

Danfoss DCL 164S Anti-Acid Dehydrator Filter – 12 mm ODS, 76×152 mm

Ensure peak performance and longevity of your refrigeration or HVAC/R system with the Danfoss DCL 164S Anti-Acid Dehydrator Filter. Engineered in India, this filter features 12 mm ODS copper tube fittings, a durable ø 76 mm copper housing, and a 152 mm length. Its high-capacity molecular-sieve desiccant core effectively absorbs moisture and acidic...
€65.76
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Castel DF303/2S Dehydrator Filter – 1/4″ ODS, 50 cm³ Castel DF303/2S Dehydrator Filter – 1/4″ ODS, 50 cm³

Castel DF303/2S Anti-Acid Dehydrator Filter – 1/4″ ODS, 50 cm³

Maintain the efficiency and longevity of your blast chillers and refrigerated cupboards with the Castel DF303/2S Anti-Acid Dehydrator Filter. Manufactured in China, this robust filter features a solid-cartridge desiccant, standard 1/4″ ODS copper fittings, and a 50 cm³ nominal volume. Specifically designed for ILSA equipment—including ABOG0001, ABOG0006,...
€13.82
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Castel DF316/2 Dehydrator Filter – 1/4″ SAE, 250 cm³ Castel DF316/2 Dehydrator Filter – 1/4″ SAE, 250 cm³

Castel DF316/2 Dehydrator Filter – 1/4″ SAE, 250 cm³

Safeguard your refrigeration and HVAC/R equipment against moisture and acidic contaminants with the Castel DF316/2 Dehydrator Filter. Manufactured in China, this high-capacity filter features a 1/4″ SAE male connection and a large 250 cm³ solid-cartridge desiccant core. Its robust design efficiently traps water vapor and acid by-products, preventing...
€25.82
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Castel DF308/3 Dehydrator Filter – 3/8″ SAE, 130 cm³ Castel DF308/3 Dehydrator Filter – 3/8″ SAE, 130 cm³

Castel DF308/3 Dehydrator Filter – 3/8″ SAE, 130 cm³

Protect your refrigeration and HVAC/R systems from moisture and acidic contaminants with the Castel DF308/3 Dehydrator Filter. Manufactured in China, this filter features a 3/8″ SAE connection and a 130 cm³ solid-cartridge molecular sieve core. Its compact yet high-performance design rapidly absorbs water vapor and acids, preventing corrosion, freeze-ups,...
€21.34
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Castel DF303/3 (4303/3) Dehydrator Filter – 3/8″ SAE Castel DF303/3 (4303/3) Dehydrator Filter – 3/8″ SAE

Castel DF303/3 (4303/3) Dehydrator Filter – 3/8″ SAE, 50 cm³

Ensure reliable operation and extend the life of your refrigeration and HVAC/R systems with the Castel DF303/3 (4303/3) Dehydrator Filter. Engineered in China, this compact filter features a 3/8″ SAE male connection and a solid‐cartridge molecular sieve providing 50 cm³ of desiccant volume. Designed to remove moisture and acidic by-products, it prevents...
€13.82
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Castel DF305/3 (4305/3) Dehydrator Filter – 3/8″ SAE Castel DF305/3 (4305/3) Dehydrator Filter – 3/8″ SAE

Castel DF305/3 (4305/3) Dehydrator Filter – 3/8″ SAE, 80 cm³

Protect your refrigeration and HVAC/R equipment from moisture and acidic contaminants with the Castel DF305/3 (4305/3) Dehydrator Filter. Engineered in China, this high-efficiency filter features a 3/8″ SAE male connection and an 80 cm³ solid-cartridge molecular sieve core. Its robust design rapidly absorbs water vapor and acid by-products, preventing...
€18.50
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Danfoss DML 023Z324591 Dehydrator Filter Danfoss DML 023Z324591 Dehydrator Filter

Danfoss DML 023Z324591 Dehydrator Filter – Reliable Moisture Protection

Ensure peak performance and longevity of your refrigeration and air-conditioning systems with the Danfoss DML 023Z324591 Dehydrator Filter. Manufactured in India to Danfoss’s exacting standards, this filter delivers rapid moisture and acid removal, preventing internal corrosion, freeze-ups, and component wear. Its robust construction and precision sealing...
€62.41
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Castel DI305N/2 Cooling-Line Filter with Humidity Indicator Castel DI305N/2 Cooling-Line Filter with Humidity Indicator

Castel DI305N/2 Cooling-Line Filter with Humidity Indicator

Ensure dry, contaminant-free refrigerant flow in your cooling systems with the Castel DI305N/2 Cooling-Line Filter. Its integrated humidity indicator provides instant visual feedback on moisture levels, while efficient condensate separation protects downstream components. Features & Benefits Built-In Humidity Indicator: Color-change sight...
€50.21
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Castel DI308N/2 Cooling-Line Filter with Humidity Indicator Castel DI308N/2 Cooling-Line Filter with Humidity Indicator

Castel DI308N/2 Cooling-Line Filter with Humidity Indicator

Keep your refrigeration and air‐conditioning loops free of moisture and contaminants with the Castel DI308N/2 Cooling‐Line Filter. Its built‐in humidity indicator provides instant visual feedback on refrigerant moisture levels, while efficient condensate separation protects downstream equipment. Features & Benefits Integrated Humidity...
€51.02
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Castel DI308N/3 Cooling-Line Filter with Humidity Indicator Castel DI308N/3 Cooling-Line Filter with Humidity Indicator

Castel DI308N/3 Cooling-Line Filter with Humidity Indicator

Protect your refrigeration and air-conditioning loops from moisture and debris with the Castel DI308N/3 Cooling-Line Filter. Its built-in humidity indicator provides instant visual feedback on refrigerant moisture levels, while efficient condensate separation safeguards downstream equipment. Features & Benefits Integrated Humidity Indicator:...
€53.56
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Castel DI305N/2S Cooling-Line Filter with Humidity Indicator Castel DI305N/2S Cooling-Line Filter with Humidity Indicator

Castel DI305N/2S Cooling-Line Filter with Humidity Indicator

Ensure moisture-free operation in your refrigeration and air-conditioning systems with the Castel DI305N/2S Cooling-Line Filter. Its built-in humidity indicator provides instant visual feedback on refrigerant moisture levels, while efficient condensate separation protects downstream components. Features & Benefits Built-In Humidity...
€50.62
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Castel DI305N/3 Cooling-Line Filter with Humidity Indicator Castel DI305N/3 Cooling-Line Filter with Humidity Indicator

Castel DI305N/3 Cooling-Line Filter with Humidity Indicator

Maintain dry, contaminant-free refrigerant flow in your cooling systems with the Castel DI305N/3 Cooling-Line Filter. Its built-in humidity indicator provides instant visual feedback on moisture levels, while efficient condensate separation protects downstream components. Features & Benefits Built-In Humidity Indicator: Color-change sight...
€50.21
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Castel DI305N/3S Cooling-Line Filter with Humidity Indicator Castel DI305N/3S Cooling-Line Filter with Humidity Indicator

Castel DI305N/3S Cooling-Line Filter with Humidity Indicator

Ensure dry, contaminant-free refrigerant flow in your HVAC and refrigeration systems with the Castel DI305N/3S Cooling-Line Filter. Its integrated humidity indicator provides instant visual feedback on moisture levels, while efficient condensate separation guards downstream components. Features & Benefits Built-in Humidity Indicator:...
€50.21
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Castel DI305N/M10S Cooling-Line Filter with Humidity Indicator Castel DI305N/M10S Cooling-Line Filter with Humidity Indicator

Castel DI305N/M10S Cooling-Line Filter with Humidity Indicator

Maintain dry, contaminant-free refrigerant flow in your cooling systems with the Castel DI305N/M10S Cooling-Line Filter. Its integrated humidity indicator provides instant visual feedback on moisture levels, while efficient condensate separation protects downstream components. Features & Benefits Built-In Humidity Indicator: Color-change...
€52.34
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Castel DI308N/2S Cooling-Line Filter with Humidity Indicator Castel DI308N/2S Cooling-Line Filter with Humidity Indicator

Castel DI308N/2S Cooling-Line Filter with Humidity Indicator

Ensure moisture-free, contaminant-free refrigerant flow in your cooling systems with the Castel DI308N/2S Cooling-Line Filter. Its integrated humidity indicator provides instant visual feedback on moisture levels, while efficient condensate separation safeguards downstream components. Features & Benefits Built-In Humidity Indicator:...
€51.02
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Castel DI308N/3S Cooling-Line Filter with Humidity Indicator Castel DI308N/3S Cooling-Line Filter with Humidity Indicator

Castel DI308N/3S Cooling-Line Filter with Humidity Indicator

Protect your refrigeration and HVAC cooling circuits from moisture and debris with the Castel DI308N/3S filter. Its integrated humidity indicator instantly signals rising moisture, while efficient condensate separation safeguards compressors and heat-exchange components. Features & Benefits Integrated Humidity Indicator: Color-change sight...
€53.87
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Castel DI316N/3 Cooling-Line Filter with Humidity Indicator Castel DI316N/3 Cooling-Line Filter with Humidity Indicator

Castel DI316N/3 Cooling-Line Filter with Humidity Indicator

Ensure dry, contaminant-free operation in your refrigeration and HVAC cooling circuits with the Castel DI316N/3 Cooling-Line Filter. Its integrated humidity indicator provides instant visual feedback on moisture levels, while efficient condensate separation protects downstream components. Features & Benefits Built-In Humidity Indicator:...
€60.48
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Castel DI316N/4 Cooling-Line Filter with Humidity Indicator Castel DI316N/4 Cooling-Line Filter with Humidity Indicator

Castel DI316N/4 Cooling-Line Filter with Humidity Indicator

Ensure dry, contaminant-free refrigerant flow in your cooling systems with the Castel DI316N/4 Cooling-Line Filter. Its integrated humidity indicator provides instant visual feedback on moisture levels, while efficient condensate separation protects downstream equipment. Features & Benefits Built-In Humidity Indicator: Color-change sight...
€62.20
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Castel Filter DI308N/4S with Humidity Indicator Castel Filter DI308N/4S with Humidity Indicator

Castel Filter DI308N/4S with Humidity Indicator

Protect your refrigeration and air-conditioning systems from moisture and contaminants with the Castel Filter DI308N/4S. Its built-in humidity indicator provides immediate visual feedback on system moisture, while the high-capacity desiccant traps water and particles to safeguard equipment longevity. Integrated Humidity Indicator:...
€56.21
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Castel Filter DI308N/M12S with Humidity Indicator Castel Filter DI308N/M12S with Humidity Indicator

Castel Filter DI308N/M12S with Humidity Indicator

Safeguard your refrigeration and air-conditioning equipment from moisture and contaminants with the Castel Filter DI308N/M12S. Its built-in humidity indicator provides immediate visual feedback on moisture levels, enabling proactive system maintenance. Humidity Indicator: Color-changing window signals moisture ingress. 12 mm...
€56.21
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Why Choose a Quality Filter Drier?

A professional-grade filter drier is more than just an optional component—it’s essential for system longevity and efficiency:

  • Moisture Removal
    Prevents ice formation in expansion valves and minimizes acid corrosion throughout the circuit.

  • Acid Filtration
    Adsorbs harmful organic and inorganic acids that form over time, safeguarding compressor internals.

  • Particulate Capture
    Traps metal shavings, pipe scale and debris to protect delicate components and extend service intervals.

  • System Reliability
    Reduces downtime, maintenance costs and refrigerant loss, ensuring consistent performance under all operating conditions.

Our Brands & Product Lines

Danfoss

  • DMB Series
    100 % molecular-sieve core designed for HFC/HCFC refrigerants with POE oil; exceptional moisture capacity for commercial and industrial systems.

  • DML/DCL Hermetic
    Fully sealed design optimized for automotive and HVAC applications; rated up to 46 bar; available with flare or copper connections; withstands high vibration environments.

  • DB/DBU Bi-Flow
    Built-in check-valve technology for reversible heat-pump and VRF systems; captures contaminants in either flow direction without bypass risk.

Castel

  • Classic Solid-Core (DF Series)
    Robust steel body with nickel-plated or copper (Cu-DHP) solder/flared ends; rated up to 50 bar; compatible with R22, R134a, R404A, R290 and HFO blends.

  • Hermetic MS-Compacted Bead
    Replaceable molecular-sieve core pressed for maximum capacity; TÜV and PED certified; solder or flare connections for versatile installation.

  • Polyhedra Series
    Engineered specifically for natural refrigerants (HCs); replaceable core design; rated to 50 bar; ideal for eco-friendly and low-GWP systems.

DENA

  • SM Series Copper Filter Drier
    Entirely copper body (Cu 99.9 DHP) with universal molecular-sieve core; temperature range –40 °C to +80 °C; core volumes from 80 cm³ to 670 cm³; ODS-solder or SAE-flare connections.

  • Liquid-Line Ice-Machine Driers
    Compact inline designs with integrated back-valve options; tailored for high-purity loops and specialty refrigeration circuits in food-service equipment.

How to Select the Right Filter Drier

  1. Refrigerant & Oil Compatibility
    Match the core material to your refrigerant (HFC/HCFC vs. natural) and lubricant type (POE, PAG, mineral).

  2. Maximum Working Pressure
    Verify whether your system requires up to 46 bar (Danfoss) or up to 50 bar (Castel, DENA).

  3. Flow Configuration
    Choose liquid-line for pre-expansion protection, suction-line for compressor safety or bi-flow for reversible heat-pump systems.

  4. Core Style
    Decide between hermetic (sealed) cores for simplicity or replaceable-core designs for lower life-cycle cost.

  5. Connection Type
    Select flare or solder joints and body material (copper vs. steel) based on installation practices and vibration exposure.

Shop Filter Driers at Brooks Parts

Protect your investment and maximize system reliability with genuine filter driers from Danfoss, Castel and DENA. Browse detailed specifications, compare product lines and order online today. For tailored recommendations or technical support, please contact our experts.