Armstrong D3448-6 Replacement HVAC Air Filter - D3448-6
The Armstrong D3448-6 is a replacement air filter designed for HVAC systems. It ensures optimal air quality by trapping dust and allergens, supporting efficient airflow.
This filter is essential for maintaining your HVAC system's performance and prolongs its lifespan.
- Compatible with various HVAC units
- Designed for easy installation
- Traps particles to improve indoor air quality
Specifications
| Filter Type |
Air Filter |
| Dimensions |
24 in Ă— 24 in Ă— 1 in |
| Material |
Synthetic fiber |
| Item Weight |
0.5 pounds |
What our Experts Think
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Clarification: The D3448‑6 is often mistaken for an HVAC air filter, but it is actually a 3/4″ stainless-steel integral strainer connector, not a filter.
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Durable design: Made from Nitronic 60 stainless steel, ensuring high corrosion resistance and long-term reliability in hydronic systems.
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Efficient flow management: Two-bolt “right-to-left” design allows for inline installation with minimal flow disruption.
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Maintenance-friendly: Built-in strainer catches debris before it enters critical components, reducing wear and extending system life.
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OEM-quality: Genuine Armstrong part ensures optimal compatibility and performance with Armstrong steam traps and separators.
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Cost-effective: Affordable replacement that helps prevent more expensive system failures over time.
Q&A
Q: What is the Armstrong D3448‑6?
A: It’s a stainless-steel two-bolt connector with an integral strainer for fluid systems, not an HVAC air filter.
Q: What material is it made of?
A: Nitronic‑60 stainless steel.
Q: What connection type does it use?
A: 3/4″ socket-weld, right-to-left flow.
Q: What is the function of this part?
A: It allows fluid flow while straining debris to protect downstream components.
Q: Is this part compatible with HVAC air filtration?
A: No, it is designed for fluid systems and cannot replace an air filter.
Q: What systems use this part?
A: Typically used in Armstrong steam and fluid handling systems.
Maintenance Tips
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Inspect the filter monthly for dust buildup, reduced airflow, or discoloration.
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Replace the filter every 1–3 months; more frequently if you have pets, allergies, or high dust levels.
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Turn off the HVAC unit before removing or installing the filter.
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Install the filter with arrows aligned to the airflow direction, typically toward the blower.
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Ensure the filter fits snugly in its frame to prevent air bypass.
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Schedule HVAC preventive maintenance twice a year to maintain performance and protect your system.
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Keep a log of filter changes and inspections to track performance and detect issues early.
