Standard Aluminium Air Filters

Standard Aluminium Air Filters — Aluminum Air Filters

This page lists all 36 Standard Aluminium Air Filters replacement filters available from Metal Air Filters — precision-manufactured washable aluminum mesh filters engineered as direct OEM replacements for Carrier commercial HVAC equipment. Each aluminum frame air filter on this page is a HI Series and HIA Series product manufactured by American Metal Filter Company (AMFCO) with .030" extruded aluminum alloy frames, corrugated aluminum mesh media, UL 900 Class 1 certification, and a 275°F maximum operating temperature rating.

Each filter is a permanent washable replacement — clean and reuse for 5–10 years rather than replacing disposable filters every 30–90 days. AMFCO’s aluminum mesh construction provides 43% average dust arrestance per ASHRAE 52.1, making these filters ideal pre-filters in multi-stage Carrier commercial HVAC systems protecting downstream MERV 8 through HEPA filtration stages in rooftop units, air handlers, and split systems.

Commercial & Industrial Applications

Carrier commercial HVAC equipment is deployed across a wide range of commercial, institutional, and industrial building types. The following applications represent the primary use cases for Standard Aluminium Air Filters permanent washable aluminum mesh filters.

Multi-Family Housing & Apartment Complexes

Carrier rooftop units are widely deployed in multi-family housing where centralized HVAC systems serve multiple dwelling units. The HIA102025-1-KH03DU350 compatible filter provides 5-10 year service life in these applications, dramatically reducing maintenance labor costs compared to monthly disposable filter replacement across multiple rooftop units. The 20x25x1 size is the most common commercial filter dimension, making it ideal for standardizing filtration across entire property portfolios. The washable design eliminates recurring filter purchase expenses and waste disposal fees, while the 275°F rating handles rooftop equipment exposed to extreme summer temperatures. Property managers benefit from extended cleaning intervals (30-90 days) that reduce maintenance crew workload while protecting indoor air quality and extending equipment life.

Retail Spaces & Shopping Centers

Commercial retail facilities with Carrier HVAC systems require reliable filtration to maintain customer comfort and protect merchandise from dust accumulation. The HIA102025-1-KH03DU350’s 43% dust arrestance captures large particulates before they reach expensive secondary filtration, extending the life of MERV 8-11 pleated filters and reducing total filtration costs. The 20x25x1 size is the industry standard for commercial rooftop units, ensuring compatibility with the vast majority of Carrier commercial equipment. The permanent aluminum construction withstands the continuous operation typical of retail spaces with extended hours (12-16 hours daily), while the washable design allows cleaning during off-hours without inventory costs or supply chain delays common with disposable filters.

Office Buildings & Corporate Facilities

Modern office buildings with Carrier commercial HVAC systems benefit from the HIA102025-1-KH03DU350’s precision compatibility and washable performance. The 20x25x1 dimension is the standard size for commercial office building rooftop units, making this filter an ideal choice for facility-wide standardization. The filter’s low initial pressure drop (0.08-0.12″ w.g.) minimizes energy consumption while protecting downstream coils and components from particulate accumulation. Office facility managers appreciate the 5-10 year service life that eliminates recurring budgeting for filter replacements, while the UL 900 Class 1 certification ensures compliance with commercial building codes for fire safety. The washable design allows immediate response to indoor air quality concerns without waiting for replacement filter procurement.

Healthcare & Medical Facilities

Hospitals, medical centers, and healthcare facilities with Carrier commercial systems require reliable pre-filtration to protect sensitive populations and expensive diagnostic equipment. The HIA102025-1-KH03DU350’s permanent aluminum construction eliminates concerns about filter media shedding that can occur with degraded disposable filters. The 20x25x1 size is the most common dimension in healthcare facility rooftop units and air handlers, allowing standardization across entire medical campuses. The washable design allows facility staff to maintain consistent filtration performance without supply chain dependencies—critical for facilities requiring continuous HVAC operation. The filter’s high surface area (500 square inches) provides maximum dust holding capacity in the popular 20x25x1 size.

Light Industrial & Manufacturing Facilities

Light industrial environments with Carrier commercial HVAC systems face elevated particulate loading from manufacturing processes and outdoor air intake. The HIA102025-1-KH03DU350’s 5-ply aluminum mesh construction captures large particulates, significantly extending the life of expensive final-stage filters. The 20x25x1 size is the standard for industrial rooftop units, ensuring broad compatibility across manufacturing facilities. The 81 g/sq ft dust holding capacity provides 30-90 day cleaning intervals even in dusty environments, while the washable design allows on-site cleaning without production interruption. The 275°F rating handles industrial process heat and ambient temperatures that would rapidly degrade disposable filters in rooftop applications.

Educational Institutions & School Facilities

Schools, colleges, and universities with Carrier commercial HVAC systems benefit from the HIA102025-1-KH03DU350’s long service life and washable design. The 20x25x1 size is the most common dimension in educational facility rooftop units, allowing maintenance departments to standardize on a single filter size across entire campuses. Budget-conscious school districts save $1,440-2,700 per filter location over 5-10 years compared to monthly disposable replacements. The washable design allows custodial staff to clean filters during summer maintenance periods without requiring specialized procurement or inventory management. The UL 900 Class 1 certification ensures compliance with school building fire safety codes.

Frequently Asked Questions

Is this compatible with Carrier KH03DU350 equipment?

Yes, this filter is precision-manufactured to match the exact specifications of the Carrier KH03DU350 filter (actual dimensions 19.5 x 24.5 x 0.875), ensuring a perfect fit in standard Carrier commercial equipment.

What is the filtration efficiency?

This 5-ply corrugated aluminum mesh filter provides approximately 43% average dust arrestance, making it an ideal pre-filter for commercial Carrier systems.

How do I clean this filter?

Remove and spray with water using a garden hose or pressure washer (up to 1500 PSI). Use an aluminum-safe detergent for heavy accumulation.

Is it UL rated?

Yes, it is UL 900 Class 1 rated, which means it meets strict fire safety standards for commercial and industrial buildings.

What is the maximum operating temperature?

The all-aluminum construction allows for continuous operation in temperatures up to 275°F (135°C).

Does it have drainage holes?

Yes, it features three corner drain holes to ensure moisture is completely removed after washing.

Is this a permanent filter?

Yes, this is a permanent metal mesh filter designed to be washed and reused rather than discarded, providing 5 to 10 years of service.

Where is this filter manufactured?

This filter is 100% manufactured in the United States using premium domestic aluminum.

Why is the actual size smaller than 20x25x1?

Industry standard nominal sizing (20x25x1) allows for a proper fit into standard tracks. The exact actual dimensions are 19.5″ x 24.5″ x 0.875″.

Can this replace disposable filters?

Yes, if your Carrier system currently uses 20x25x1 disposable filters, this permanent aluminum filter will fit in the same filter track.