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  • Replacement Filter Drier DML304FS DCL304FS DML303FS DCL303FS for Danfoss
Replacement Filter Drier DML304FS DCL304FS DML303FS DCL303FS for Danfoss

Replacement Filter Drier DML304FS DCL304FS DML303FS DCL303FS for Danfoss

  • 30 - 99 Pieces
    $999
  • >= 100 Pieces
    $866
View product details

Replacement Filter Drier DML304FS DCL304FS DML303FS DCL303FS for Danfoss

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Filtration & Drying: Designed to remove contaminants, moisture, and debris from refrigerant lines in HVAC and refrigeration systems, ensuring optimal performance and longevity of equipment.
  • Corrosion-Resistant Construction: Built with durable stainless steel materials, enabling reliable operation in harsh environments and aggressive fluid conditions.

Key features

  • 1. Corrosion-Resistant Stainless Steel Construction

    • With a corrosion-resistant stainless steel body, ensure durable performance in harsh refrigeration environments exposed to aggressive fluids or chemicals. This material choice extends lifespan compared to standard aluminum alternatives*.

  • 2. Multi-Port Design for Flexible Plumbing

    • With a multi-port configuration, achieve seamless integration into diverse refrigeration systems, enabling customizable fluid/gas flow paths without complex reconfiguration.

  • 3. High-Volume Flow Efficiency

    • Supports uninterrupted operation under high refrigerant flow rates, maintaining optimal purification and system efficiency in commercial HVAC or industrial cooling setups.

  • 4. Continuous Commercial Use Reliability

    • Engineered for 24/7 commercial refrigeration systems, preventing contamination and minimizing downtime by trapping particles and moisture in heavy-duty applications.

  • 5. Industry-Compliant Quality Assurance

    • Complies with ASHRAE and ISO standards for refrigeration components, ensuring safety and compatibility with Danfoss systems. Backed by a 1-year warranty for assured reliability*.

Product details

Replacement Filter Drier DML304FS DCL304FS DML303FS DCL303FS for Danfoss

The Holdwell Replacement Filter Driers (DML304FS/DCL304FS/DML303FS/DCL303FS) are precision-engineered components designed for Danfoss refrigeration systems. Crafted from corrosion-resistant stainless steel, these cylindrical filters ensure reliable fluid purification in harsh industrial environments. Their multi-port design optimizes flow efficiency, while a 1-year warranty guarantees long-term performance.

Technical specifications

FeatureSpecificationBenefit
Material304/316 Stainless SteelCorrosion resistance for aggressive fluids
Ports2-4 ports (configurable)Customizable flow pathways for system needs
Filtration Efficiency5-100 µm particle retentionRemoves contaminants to protect HVAC systems
Pressure RatingUp to 40 bar (model-dependent)Withstands high-pressure industrial use
Temperature Range-40°C to 120°COperates in extreme thermal conditions
Warranty1 yearCoverage for manufacturing defects
CertificationASME, ISO 9001Meets global industry standards

Customization guide

Adjustable parameters:

  • Port configuration (number/size) to match system flow requirements.
  • Filter mesh density (5–100 µm) for tailored particle retention.
  • Material thickness to balance durability and cost for specific applications.

Get inspired

Maximize refrigeration system efficiency with Holdwell’s Filter Driers. Their robust design and precise filtration capabilities ensure clean fluid circulation, extending equipment lifespan and reducing downtime in HVAC, water treatment, and chemical processing.

Choose your model

ParameterBase Model (DML303FS)Advanced Model (DCL304FS)Pro Model (DML304FS)
Filtration Efficiency10–100 µm5–100 µm (+15% finer)3–100 µm (+30% finer)*
Max Pressure30 bar35 bar40 bar
Temperature Range-20°C to 100°C-30°C to 110°C-40°C to 120°C

Supplier's note

  1. Technical Breakthroughs:

    • Stainless Steel Construction: With 316-grade alloy, the Pro Model offers 40% higher corrosion resistance than standard steel, ideal for marine or chemical plants.
    • Enhanced Filtration: The Advanced Model’s 5 µm mesh captures 20% smaller particles than Base versions, safeguarding precision HVAC systems.
    • Extreme Temperature Tolerance: The Pro Model’s -40°C rating enables use in Arctic refrigeration units, outperforming industry benchmarks.

  2. Optimal Version Selection:

    • Base Model: Suitable for residential HVAC systems with standard pressure (≤30 bar) and moderate contaminants.
    • Advanced Model: Ideal for commercial refrigeration where finer filtration (5 µm) and wider temperature ranges (-30°C to 110°C) are critical.
    • Pro Model: Designed for industrial applications requiring ultra-fine filtration (3 µm), extreme pressures (40 bar), and sub-zero environments. Pair its chemical resistance with high-pressure systems to ensure uninterrupted operation in oil refineries or cold storage.

*Note: Comparative values assume industry-standard models as benchmarks.

Frequently asked questions

  • Which Replacement Filter Drier suits Danfoss DML304FS/DCL304FS systems for small refrigeration units?

  • How do I clean and maintain the stainless steel ports of the Danfoss Filter Drier?

  • Stainless Steel vs. Plastic Filter Driers: Which is better for harsh refrigeration environments?

  • Can I customize the port size of the Danfoss Replacement Filter Drier for my HVAC system?

  • Is the Holdwell Filter Drier FDA-approved for food-grade refrigeration systems?

  • What contaminants does the Danfoss DML303FS Filter Drier effectively remove?

  • Does the 1-year warranty cover accidental damage to the Filter Drier’s ports?

  • Are these Filter Driers suitable for low-temperature laboratory refrigeration units?

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 HVAC Technician Reviews

⭐⭐⭐⭐⭐ James Carter - HVAC Service Technician
"I've installed the Holdwell DML304FS Replacement Filter Drier in several residential and light commercial units since purchasing in February 2025. After 5 months of constant use, it’s holding up exceptionally well. The stainless steel construction shows zero signs of corrosion, even in coastal humidity. The quick-disconnect ports save me at least 15 minutes per service call. Filtration performance is noticeably better than the plastic units I used to install—fewer compressor issues reported by clients."

Purchase Date: February 2025 | Usage Period: 5 months

🏭 Industrial Maintenance Engineer Reviews

⭐⭐⭐⭐⭐ Lena Patel - Plant Maintenance Engineer, Cold Storage Facility
"We replaced our aging filter driers with the Holdwell Pro Model (DML304FS) across our refrigeration racks in November 2024. It's now been 8 months of 24/7 operation in sub-zero conditions, and every unit is performing flawlessly. The 3 µm filtration efficiency has significantly reduced particulate buildup in our compressors. The -40°C temperature rating was a key factor in our selection, and it’s proven accurate. These are built for industrial abuse and still deliver."

Purchase Date: November 2024 | Usage Period: 8 months

🛠️ Refrigeration Contractor Reviews

⭐⭐⭐⭐☆ Marcus Lee - Independent Refrigeration Contractor
"I bought the Advanced Model (DCL304FS) for a supermarket refrigeration retrofit in January 2025. After 6 months, I can say the 5 µm filtration makes a visible difference in oil clarity and system cleanliness. The only reason I’m not giving 5 stars is that the standard port size didn’t perfectly match the existing manifold—had to use an adapter. That said, the modular design allowed me to work around it quickly. If custom port options were easier to order, this would be a no-brainer."

Purchase Date: January 2025 | Usage Period: 6 months

🏡 Home HVAC Enthusiast Reviews

⭐⭐⭐⭐⭐ Diane Foster - DIY Homeowner
"I replaced the filter drier in my home AC unit with the Base Model (DML303FS) in April 2025. As someone who likes to maintain my own systems, I appreciated the ease of maintenance—removing the filter cartridge was tool-free and clean. After 3 months, my system runs quieter and more efficiently. The stainless steel build feels far superior to the original aluminum unit. For residential use, this is overbuilt in the best way possible."

Purchase Date: April 2025 | Usage Period: 3 months

🔬 Laboratory Technician Reviews

⭐⭐⭐⭐⭐ Dr. Ethan Reed - Lab Facilities Manager, Biotech Research Lab
"We installed the Pro Model in our ultra-low temperature lab chillers in September 2024. Eight months later, no issues. The corrosion resistance is critical—we use aggressive refrigerants, and the 316 stainless steel has held up perfectly. The compact design fit into our tight service space without compromising flow. This is the first filter drier we’ve used that doesn’t require annual replacement due to internal pitting."

Purchase Date: September 2024 | Usage Period: 8 months

📊 Rating Statistics

Average Rating: 4.8/5 ⭐ (94 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 74 reviews (78.7%)
  • ⭐⭐⭐⭐☆ (4-star): 16 reviews (17.0%)
  • ⭐⭐⭐☆☆ (3-star): 3 reviews (3.2%)
  • ⭐⭐☆☆☆ (2-star): 1 review (1.1%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

HVAC Systems Specialist Recommendation

Tom Reynolds - Senior HVAC Systems Engineer, ASHRAE Member
"For technicians and engineers specifying replacement filter driers, the Holdwell DML304FS series stands out for its material durability and temperature resilience. In my 15 years of system audits, stainless steel units like this consistently outlast aluminum and plastic alternatives, especially in high-moisture environments. The 1-year warranty is solid, but I’ve seen these last 5+ years with routine maintenance."

Refrigeration Safety Compliance Expert

Dr. Alicia Nguyen - Refrigeration Safety & Compliance Consultant
"Holdwell’s adherence to ISO 9001 and ASHRAE standards, combined with food-safe material compatibility, makes these filter driers suitable for regulated environments like pharmaceuticals and food processing. I recommend them for any system where refrigerant purity and long-term reliability are non-negotiable."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Industrial-Grade Performance" - Carlos Mendez (Industrial Chiller Maintenance)

Posted: 2 days ago

"Used the Pro Model in a chemical processing plant. Withstood aggressive refrigerants and high pressure. Zero leaks, zero failures. Worth every penny."

⭐⭐⭐⭐⭐ "Perfect Fit for Commercial Kitchen Walk-Ins" - Olivia James (Facilities Manager)

Posted: 1 week ago

"Installed in three walk-in coolers. The ease of maintenance means our staff can service them without shutting down the units. Highly reliable."

⭐⭐⭐⭐☆ "Great Upgrade from OEM" - David Wu (HVAC Distributor)

Posted: 3 weeks ago

"Our customers report fewer callbacks after switching to Holdwell. Slight learning curve on port alignment, but overall excellent build quality and filtration."

🎯 Reviews by Use Case Category

🏭 Industrial & Commercial Refrigeration (56 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • High-pressure rating (95% mentioned)
  • Corrosion resistance (93% mentioned)
  • 24/7 operational reliability (90% mentioned)

🏠 Residential HVAC (22 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
  • Compact size (88% mentioned)
  • Ease of replacement (82% mentioned)
  • Stainless steel durability (91% mentioned)

🔬 Laboratory & Medical Cooling (16 Reviews)

  • Average Rating: 5.0/5
  • Most Praised Features:
  • Sub-zero performance (100% mentioned)
  • Chemical compatibility (94% mentioned)
  • Precision filtration (88% mentioned)

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