Description
Carrier 40RUM Fan Coil Unit — Washable Pre-Filter Replacement
The correct pre-filter for the Carrier 40RUM Fan Coil Unit is the HIA101624 — a washable 5-ply corrugated aluminum mesh filter manufactured by American Metal Filter Company. The 40RUM requires 2 filters across 2 size positions. Metal Air Filters has verified this specification against the official Carrier product documentation.
The HIA101624 matches the factory filter track dimensions exactly, delivering a rattle-free, bypass-free fit in all filter positions. The washable construction eliminates recurring disposable filter costs — clean with water and return to service, providing 5–10 years of continuous operation from a single purchase.
Carrier 40RUM Fan Coil Unit IOM (PDF)
Metal Air Filters is an independent manufacturer of aftermarket filters. Carrier® and the Carrier logo are registered trademarks of Carrier Global Corporation. All OEM part numbers and brand names referenced on this page are used strictly for compatibility identification purposes and do not imply any affiliation with or endorsement by the trademark holder.
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Why the HIA101624 Is the Correct Replacement
- Verified Fit: Dimensionally matched to the Carrier 40RUM factory filter track — no cutting, shimming, or bypass airflow around loose-fitting disposable filters
- Permanent Washable Design: Clean with water and return to service — 5–10 years of service life from a single purchase eliminates recurring disposable filter replacement costs
- Aluminum Alloy Frame: Precision-mitered aluminum frame maintains dimensional accuracy through years of continuous commercial HVAC operation
- Multi-Ply Corrugated Aluminum Mesh Media: Captures large airborne particulates while maintaining low initial resistance — no fan performance penalty
- UL 900 Class 1 Certified: Continuous operation to 275°F (135°C) — compliant with commercial building fire safety codes and insurance requirements
- Made in USA: Manufactured by American Metal Filter Company (AMFCO) using domestic materials — consistent quality and reliable lead times
Specifications
Carrier 40RUM Filter Requirements
| Nominal Size | Actual Size | Filter Type | Qty Required |
|---|---|---|---|
| 16″ x 24″ x 1″ | 15.50″x23.50″x0.875″ | washable filter | 1 |
| 15″ x 24″ x 1″ | 15.48″x23.52″x0.98″ | washable filter | 1 |
| Reference Documentation | Carrier 40RUM Fan Coil Unit IOM (PDF) | ||
Correct Replacement Filters for the Carrier 40RUM
The Carrier 40RUM requires 2 filters total. Order the complete set below:
• HIA101624 — HI Series Washable Aluminum Mesh 16x24x1 — Qty: 1 per unit | Recommended replacement
• HIA101524 — HI Series Washable Aluminum Mesh 15x24x1 — Qty: 1 per unit | Recommended replacement
Construction Features
Extruded Aluminum Alloy Frame
The precision-mitered .030″ extruded aluminum alloy frame maintains the exact filter track dimensions of the Carrier 40RUM throughout the filter’s full 5–10 year service life. Aluminum construction resists corrosion from moisture exposure during washing and from the humid conditions common in commercial AHU installations, maintaining dimensional stability without rust, scale, or material loss.
5-Ply Corrugated Aluminum Mesh Filtration Media
Five layers of corrugated aluminum mesh are arranged in a cross-pattern, progressively filtering air as it moves through the media depth. This construction achieves effective large-particulate capture with low initial resistance — protecting downstream coils, dampers, and secondary filtration stages without imposing the fan performance penalty that occurs with high-resistance pre-filters.
UL 900 Class 1 Fire Safety Certification
MAF commercial HVAC replacement filters carry UL 900 Class 1 certification for continuous operation to 275°F (135°C). This certification is required by commercial building codes and insurance policies in most jurisdictions. The all-metal construction — aluminum or galvanized steel frame and aluminum mesh media — is non-combustible, ensuring the filter does not contribute to fire spread in the event of a system fault or building emergency.
Made in USA by American Metal Filter Company
All MAF replacement filters are manufactured in the United States by American Metal Filter Company (AMFCO) using domestic materials. US manufacturing provides consistent dimensional tolerances, predictable lead times, and quality control that imported alternatives cannot reliably match. AMFCO can provide country-of-origin documentation for facilities with domestic procurement requirements.
Residential and Commercial Applications
The Carrier 40RUM Fan Coil Unit is installed across a broad range of commercial building types. In all of these applications, replacing disposable pre-filters with the MAF permanent washable replacement delivers a measurable operational advantage: one purchase, five to ten years of service, and a straightforward water-based cleaning procedure that restores full filtration performance between washings.
Office Buildings and Corporate Facilities
Commercial office buildings operating Carrier fan coil units carry a significant ongoing cost in disposable filter procurement, delivery, and installation when managing multi-unit installations across a building or portfolio. Converting to permanent washable pre-filters eliminates that recurring material cost while reducing maintenance labor to a periodic wash procedure. The MAF replacement delivers consistent pre-filter performance without supply chain exposure to disposable filter availability or price fluctuations.
Retail Centers and High-Traffic Commercial Spaces
Retail facilities operate Carrier equipment under high daily occupancy loads and extended hours, placing elevated demand on pre-filtration. The MAF washable pre-filter handles this loading with a 30–90 day cleaning interval that fits standard maintenance scheduling. The permanent aluminum construction withstands continuous commercial-duty operation without the dimensional degradation and efficiency loss of cardboard-framed disposable filters under high-cycle conditions.
Multi-Family Housing and Apartment Complexes
Centralized fan coil unit installations in multi-family and mixed-use properties benefit from the MAF filter’s long service life. Property management teams overseeing filter maintenance across multiple units reduce both material costs and administrative overhead by eliminating disposable filter inventory management. A single MAF filter purchase per position replaces three to six years of recurring disposable replacements at typical commercial filter change intervals.
Healthcare and Institutional Facilities
Hospitals, medical centers, schools, and institutional buildings operating Carrier commercial equipment require pre-filtration that performs consistently without supply chain dependencies. The MAF permanent washable pre-filter provides 5–10 years of service from a single purchase, eliminating the risk of filtration gaps caused by delayed disposable filter shipments or short-term availability issues. The all-aluminum construction is non-toxic, non-shedding, and UL 900 Class 1 certified — meeting the fire safety standards required by healthcare and institutional building codes.
Installation
Fit Verification
Before installation, confirm the filter track dimensions in the Carrier 40RUM match the specifications above. The replacement filters should fit with approximately 1/16″ to 1/8″ clearance on all sides — enough for smooth installation and removal without bypass airflow around the filter edges.
Installation Procedure
Shut down the Carrier 40RUM before accessing the filter section. Open the filter access panel and remove all existing filters. Inspect tracks for debris. Slide the replacement filters into position with media face perpendicular to the airflow direction. Seat fully so frames are flush against track stops and all retaining clips are engaged. Close the access panel and restart the unit. Verify normal supply airflow before returning the unit to full service.
Maintenance and Cleaning
Inspect and clean the filters every 30–90 days depending on outdoor air quality and system operating hours. Remove each filter and spray with water from a garden hose or pressure washer (1500 PSI maximum), directing flow from the clean face toward the dirty face. For units handling air with grease or elevated contamination, apply an aluminum-safe neutral-pH detergent (pH 7–9), allow 10–15 minutes contact time, then rinse until runoff is clear. Air dry completely before reinstalling — approximately 2–3 hours. Never reinstall wet filters.
Related Products
Metal Air Filters manufactures permanently washable pre-filter replacements for the complete Carrier commercial fan coil unit product line. All replacements are dimensionally matched to the factory filter track specifications and carry UL 900 Class 1 certification for commercial use.
• HIA101624 — HI Series Washable Aluminum Mesh 16x24x1 (washable, permanent)
• HIA101524 — HI Series Washable Aluminum Mesh 15x24x1 (washable, permanent)
Browse all Carrier Fan Coil Unit filter replacements at Metal Air Filters
Complementary Products
The MAF washable pre-filter is the correct primary filtration stage for the Carrier 40RUM Fan Coil Unit. For facilities requiring multi-stage filtration or alternative filter media strategies, Metal Air Filters offers a complete line of compatible commercial HVAC filtration products.
Media Pad Holding Frames — HP Series
Galvanized steel or aluminum media pad holding frames accept standard disposable filter pad media as a secondary filtration stage downstream of the permanent washable pre-filter. Installing the MAF washable pre-filter upstream of a secondary pad stage extends secondary media service life by 3–5× by intercepting the large particulates that would otherwise load and blind the secondary filter rapidly. Available in the full range of commercial HVAC sizes: HP Series Media Pad Holding Frames.
Electrostatic Filters — EC Series
The EC Series permanently washable MERV 6 electrostatic filter provides enhanced particulate capture through passive electrostatic charging technology. The EC Series is available as an alternative pre-filter in applications where electrostatic attraction of finer particulates is required, or as a secondary filtration stage downstream of a coarser aluminum mesh pre-filter: EC Series Electrostatic Filters.
Washable Foam Air Filters — HF Series
The HF Series polyurethane foam filter is available for applications requiring the lowest possible initial pressure drop, or in secondary filter positions where fine particulate capture is secondary to minimizing resistance across the filter bank. HF Series filters are permanently washable and UL 900 Class 1 certified: HF Series Washable Foam Filters.
Why Choose HIA101624 for the Carrier 40RUM?
The HIA101624 is the dimensionally verified, permanently washable pre-filter replacement for the Carrier 40RUM Fan Coil Unit. It eliminates the recurring cost and administrative overhead of disposable filter procurement: 2 filters, purchased once, providing 5–10 years of continuous commercial service with periodic water-based cleaning.
The exact-dimension match to the Carrier 40RUM factory filter track delivers a rattle-free, bypass-free fit that protects downstream coils and system components from the particulate loading that occurs when ill-fitting disposable filters allow unfiltered bypass airflow. UL 900 Class 1 certified for 275°F continuous operation. Made in the USA by American Metal Filter Company. Filter specification verified against official Carrier product documentation.
For facilities managing a fleet of Carrier commercial fan coil units, converting from disposable to permanent washable pre-filters reduces annual filtration costs substantially while simplifying maintenance scheduling and eliminating supply chain dependencies on disposable filter inventory. Metal Air Filters has been supplying permanent washable commercial HVAC filter replacements for decades — call or contact us online for volume pricing on multi-unit orders.
Frequently Asked Questions
What filter does the Carrier 40RUM use?
The Carrier 40RUM uses 2 filters at the 16″ x 24″ x 1″ specification. The correct washable replacement is the HIA101624 from Metal Air Filters.
How many filters does the Carrier 40RUM require?
2 filters are required for a complete filter replacement. Order 2 units to service this unit in a single visit.
Can washable filters be used in the Carrier 40RUM?
Yes. Washable aluminum mesh pre-filters are the correct and preferred replacement type for commercial fan coil units in this class. The HIA101624 is dimensionally matched to the Carrier 40RUM filter track and installs without modification.
How often do the filters in a Carrier 40RUM need cleaning?
Inspect and clean every 30–90 days depending on outdoor air quality and system operating hours. Monitor differential pressure across the filter section — increased resistance indicates cleaning is due. In continuous-operation commercial facilities with elevated outdoor particulate loads, 30–45 day intervals are typical.
About Carrier
Carrier Global Corporation is the originator of modern air conditioning, founded by Willis Carrier in 1915 following his invention of the first modern air conditioning system in 1902. Today Carrier is the world’s leading provider of heating, air conditioning, and refrigeration solutions, with commercial HVAC equipment installed across every major building type worldwide. Carrier commercial systems are specified by mechanical engineers, installed by commercial HVAC contractors, and maintained by facility management teams in over 160 countries. For official product documentation and authorized service support, visit Carrier Commercial HVAC.
