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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
Castel Dehydrator Filter 4308/3 – Anti-Acid, 3/8" SAE Castel Dehydrator Filter 4308/3 – Anti-Acid, 3/8" SAE

Castel Anti-Acid Dehydrator Filter 4308/3 – 3/8" SAE, 154×52 mm

Optimize the longevity and efficiency of your refrigeration system with the Castel Anti-Acid Dehydrator Filter 4308/3. Engineered in Italy, this filter features a robust ø 52 mm×154 mm copper body and a solid-cartridge design (Code INT.083) to remove moisture and acidic contaminants. The 3/8" SAE connection ensures a secure fit, while the 130 cm³ nominal...
€35.88
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Dena Dehydrator Filter MG213/082 – 1/4″ SAE, ø 52 × 142 mm Dena Dehydrator Filter MG213/082 – 1/4″ SAE, ø 52 × 142 mm

Dena Dehydrator Filter MG213/082 – 1/4″ SAE, 142×52 mm

Safeguard your refrigeration and HVAC equipment from moisture and contaminants with the Dena Dehydrator Filter MG213/082. Precision-engineered in Italy, this filter features a robust ø 52 mm × 142 mm copper housing and a high-performance molecular sieve cartridge. The 1/4″ SAE connection ensures a leak-proof installation, while the 130 cm³ nominal volume...
€21.34
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Danfoss DCL 052S Anti-Acid Dehydrator Filter – 1/4″ ODS Danfoss DCL 052S Anti-Acid Dehydrator Filter – 1/4″ ODS

Danfoss Anti-Acid Dehydrator Filter DCL 052S – 1/4″ ODS, 54×107 mm

Extend the lifespan and efficiency of your refrigeration and HVAC/R systems with the Danfoss Anti-Acid Dehydrator Filter DCL 052S. Engineered in India, this compact ø 54 × 107 mm filter features 1/4″ ODS (outside diameter) connections and a specialized desiccant media that removes moisture and acidic contaminants. Its rugged construction and precision...
€40.76
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Danfoss DML 032S Weld-On Dehydrator Filter – 6 mm ODF Danfoss DML 032S Weld-On Dehydrator Filter – 6 mm ODF

Danfoss Weld-On Dehydrator Filter DML 032S – 6 mm ODF, 46×98 mm

Ensure corrosion-free and moisture-free operation of your HVAC/R system with the Danfoss Weld-On Dehydrator Filter DML 032S (023Z482191). Manufactured in India, this compact filter features ø 46 mm × 98 mm dimensions and 6 mm ODF welding connections for a secure, leak-proof installation. Packed with high-efficiency desiccant media, it removes water and...
€34.86
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DENA Dehydrator Filter MG112/052 – 1/4″ SAE, 52×115 mm DENA Dehydrator Filter MG112/052 – 1/4″ SAE, 52×115 mm

DENA Dehydrator Filter MG112/052 – 1/4″ SAE, ø 52 × 115 mm

Keep your HVAC/R system running smoothly with the DENA Dehydrator Filter MG112/052. Manufactured in Italy, this precision filter features a robust ø 52 mm × 115 mm copper body and a high-performance molecular sieve cartridge. The 1/4″ SAE connection ensures a secure, leak-proof fit, while the 80 cm³ nominal volume efficiently absorbs moisture and acidic...
€18.09
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Castel 4303/2F Anti-Acid Dehydrator Filter – 1/4″ SAE Castel 4303/2F Anti-Acid Dehydrator Filter – 1/4″ SAE

Castel Anti-Acid Dehydrator Filter 4303/2F – 1/4″ MF SAE, 92×52 mm

Extend the life of your refrigeration and HVAC/R equipment with the Castel Anti-Acid Dehydrator Filter 4303/2F. Precision-engineered in Italy, this compact filter features a ø 52 mm × 92 mm copper housing, 1/4″ MF SAE connection, and a solid-cartridge design to remove moisture and acidic contaminants. With a 50 cm³ nominal volume, it prevents corrosion,...
€23.58
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Castel 4305/2F Anti-Acid Dehydrator Filter – 1/4″ SAE Castel 4305/2F Anti-Acid Dehydrator Filter – 1/4″ SAE

Castel Anti-Acid Dehydrator Filter 4305/2F – 1/4″ MF SAE, 109×52 mm

Protect your refrigeration and HVAC/R systems from moisture and acidic contaminants with the Castel Anti-Acid Dehydrator Filter 4305/2F. Made in Italy, this precision filter features a durable ø 52 mm × 109 mm copper body, standard 1/4″ MF SAE fitting, and a solid-cartridge desiccant. Its 80 cm³ nominal volume efficiently absorbs water and...
€31.71
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Castel 4308/3F Anti-Acid Dehydrator Filter – 3/8″ SAE Castel 4308/3F Anti-Acid Dehydrator Filter – 3/8″ SAE

Castel ANTI-ACID DEHYDRATOR FILTER 4308/3F

Protect your refrigeration and HVAC/R systems from moisture and acidic contaminants with the Castel Anti-Acid Dehydrator Filter 4308/3F. Made in Italy, this robust filter features a ø 52 mm × 142 mm copper body, standard 3/8″ MF SAE connection, and a solid-cartridge desiccant packed with 130 cm³ of media. It effectively removes water and acids, preventing...
€35.17
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Danfoss DCL 053 Dehydrator Filter – 3/8″ SAE, 54×132 mm Danfoss DCL 053 Dehydrator Filter – 3/8″ SAE, 54×132 mm

Danfoss Anti-Acid Dehydrator Filter DCL 053 – 3/8″ SAE, 54×132 mm

Extend the life and reliability of your refrigeration and HVAC/R systems with the Danfoss Anti-Acid Dehydrator Filter DCL 053. Manufactured in India, this robust filter features a ø 54 mm × 132 mm copper body and standard 3/8″ SAE (MM SAE) connections. Its premium desiccant media neutralizes moisture and acidic by-products, preventing corrosion,...
€41.98
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Danfoss DCL 082S Dehydrator Filter – 1/4″ ODS, 54×133 mm Danfoss DCL 082S Dehydrator Filter – 1/4″ ODS, 54×133 mm

Danfoss Anti-Acid Dehydrator Filter DCL 082S – 1/4″ ODS, 54×133 mm

Shield your refrigeration and HVAC/R equipment from moisture and acidic by-products with the Danfoss Anti-Acid Dehydrator Filter DCL 082S. Made in India, this robust filter features a ø 54 mm × 133 mm copper housing and standard 1/4″ ODS connection. Its high-performance desiccant media efficiently removes water and acids, preventing corrosion, freeze-ups,...
€50.72
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Danfoss DCL 083S Dehydrator Filter – 10 mm ODS, 54×139 mm Danfoss DCL 083S Dehydrator Filter – 10 mm ODS, 54×139 mm

Danfoss Anti-Acid Dehydrator Filter DCL 083S – 10 mm ODS, 54 × 139 mm

Safeguard your refrigeration and HVAC/R systems with the Danfoss Anti-Acid Dehydrator Filter DCL 083S (DCL083S). Crafted in India to rigorous standards, this filter features a ø 54 mm × 139 mm copper housing and a 10 mm ODS connection. Its premium desiccant media removes moisture and acidic contaminants, preventing corrosion, freezing, and flow...
€49.30
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Castel 4303EX/2S Dehydrator Filter – 6 mm, 52×94 mm Castel 4303EX/2S Dehydrator Filter – 6 mm, 52×94 mm

Castel Dehydrator Filter 4303EX/2S – 1/4″–6 mm, 52 × 94 mm

Ensure reliable performance of hydrocarbon (HC) refrigeration systems with the Castel Dehydrator Filter 4303EX/2S. Manufactured in Italy, this compact filter features a 1/4″–6 mm connection, a ø 52 mm × 94 mm copper housing, and a stiff desiccant cartridge (code INT.032) with 50 cm³ nominal volume. It’s compatible with R290, R600, and R600a refrigerants,...
€27.75
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Danfoss DML 052 Dehydrator Filter – 1/4″ SAE, 54×119 mm Danfoss DML 052 Dehydrator Filter – 1/4″ SAE, 54×119 mm

Danfoss Dehydrator Filter DML 052 – 1/4″ SAE, 54×119 mm

Optimize the reliability of your refrigeration and HVAC/R installations with the Danfoss Dehydrator Filter DML 052. Made in Mexico, this robust filter features a 1/4″ SAE (MM SAE) connection, a ø 54 mm copper body, and a 119 mm length. Packed with high-efficiency desiccant media, it removes moisture to prevent ice formation, corrosion, and system...
€46.96
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Dena MG111/032 Dehydrator Filter – 1/4″ SAE, 52×100 mm Dena MG111/032 Dehydrator Filter – 1/4″ SAE, 52×100 mm

Dena Dehydrator Filter MG111/032 – 1/4″ SAE, 52×100 mm

Keep your refrigeration and HVAC/R systems free of moisture with the Dena Dehydrator Filter MG111/032. Engineered in Italy, this compact filter features a 1/4″ SAE connection, a ø 52 mm copper body, and a 100 mm length. Packed with high-grade molecular sieve desiccant, it removes water vapor to prevent icing, corrosion, and system downtime—ensuring...
€16.67
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Dena MG122/053 Dehydrator Filter – 3/8″ SAE, 52×125 mm Dena MG122/053 Dehydrator Filter – 3/8″ SAE, 52×125 mm

Dena Dehydrator Filter MG122/053 (LF3160272) – 3/8″ SAE, 52×125 mm

Optimize the moisture control in your refrigeration and HVAC/R systems with the Dena Dehydrator Filter MG122/053 (LF3160272). Made in Italy, this high‐efficiency filter features a robust copper body (ø 52 mm × 125 mm) and a standard 3/8″ SAE connection. Filled with advanced molecular sieve desiccant, it removes water vapor to prevent icing, corrosion, and...
€20.33
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Dena MG223/083 Dehydrator Filter – 3/8″ SAE, 52×156 mm Dena MG223/083 Dehydrator Filter – 3/8″ SAE, 52×156 mm

Dena Dehydrator Filter MG223/083 – 3/8″ SAE, 52×156 mm

Maintain peak performance in your refrigeration and HVAC/R systems with the Dena Dehydrator Filter MG223/083. Crafted in Italy, this robust filter features a 3/8″ SAE connection, a ø 52 mm copper body, and a 156 mm length. Packed with high-capacity molecular sieve desiccant (130 cm³), it efficiently removes moisture to prevent icing, corrosion, and system...
€22.77
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Dena MG224/163 Dehydrator Filter – 3/8″ SAE, 73×168 mm Dena MG224/163 Dehydrator Filter – 3/8″ SAE, 73×168 mm

Dena Dehydrator Filter MG224/163 – 3/8″ SAE, 73×168 mm

Protect your high-capacity refrigeration and HVAC/R systems with the Dena Dehydrator Filter MG224/163. Made in Italy, this heavy-duty filter features a standard 3/8″ SAE connection, a ø 73 mm copper body, and a 168 mm length. Filled with 250 cm³ of premium molecular sieve desiccant, it delivers exceptional moisture removal to prevent icing, corrosion, and...
€31.00
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Dena MG233/084 Dehydrator Filter – 1/2″ SAE, 52×162 mm Dena MG233/084 Dehydrator Filter – 1/2″ SAE, 52×162 mm

Dena DEHYDRATOR FILTER MG233/084

Ensure crystal-clear refrigerant flow and long-term reliability in your HVAC/R and refrigeration systems with the Dena Dehydrator Filter MG233/084. Made in Italy, this precision filter features a standard 1/2″ SAE connection, a durable ø 52 mm copper body, and a 162 mm length. Packed with 130 cm³ of high-capacity molecular sieve desiccant, it efficiently...
€25.35
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Dena MG234/164 Dehydrator Filter – 1/2″ SAE, 73×174 mm Dena MG234/164 Dehydrator Filter – 1/2″ SAE, 73×174 mm

Dena Dehydrator Filter MG234/164 – 1/2″ SAE, 73×174 mm

Ensure peak performance and maximum protection in your HVAC/R and refrigeration systems with the Dena Dehydrator Filter MG234/164. Made in Italy, this heavy-duty filter features a 1/2″ SAE connection, a ø 73 mm copper housing, and a 174 mm length. Packed with 250 cm³ of high-capacity molecular sieve desiccant, it rapidly absorbs moisture to prevent icing,...
€33.03
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Castel 4308/2F Anti-Acid Dehydrator Filter – 1/4″ SAE, 52×135 mm Castel 4308/2F Anti-Acid Dehydrator Filter – 1/4″ SAE, 52×135 mm

Castel Anti-Acid Dehydrator Filter 4308/2F – 1/4″ FM SAE, 52×135 mm

Protect your refrigeration circuit from acid and moisture with the Castel Anti-Acid Dehydrator Filter 4308/2F. Made in Italy, this precision filter features a 1/4″ FM SAE connection, a ø 52 mm copper body, and a 135 mm length. Equipped with a 130 cm³ solid cartridge desiccant, it effectively traps acid and moisture to prevent system corrosion, ice...
€35.17
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Castel 4316/5 & Dena 165/MG244 Dehydrator Filter – 5/8″ SAE Castel 4316/5 & Dena 165/MG244 Dehydrator Filter – 5/8″ SAE

Castel ANTI-ACID DEHYDRATOR FILTER 4316/5

Safeguard your refrigeration circuit against acid and moisture with the Castel 4316/5 & Dena 165/MG244 Anti-Acid Dehydrator Filter. Made in Italy, this robust filter features a 5/8″ SAE male fitting, a ø 73 mm copper body, and a 183 mm length. Its 250 cm³ solid-cartridge desiccant rapidly traps acids and water vapor to prevent corrosion, icing, and...
€52.34
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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.