Hart & Cooley 274120240 12" x 24" x 1" Fiberglass Throw Away Replacement Filter
A fiberglass "throw-away" HVAC replacement air filter used in systems that take a 12" x 24" x 1" filter size.
Key Features:
- Product type: Replacement filter
- Size: 12" x 24" x 1"
- Material: Fiberglass
- Manufacturer (Hart & Cooley) describes its disposable panel filters as economical filters intended for light-to-medium duty air filtration applications
- Manufacturer notes for fiberglass disposable media: progressively dense fiberglass construction with a more open air-entry side and tighter air-exit side, intended to support depth loading and media utilization
- Manufacturer describes a one-piece, moisture-resistant craft-board frame and sealant bonding intended to reduce air bypass (as described for their disposable panel filter construction)
Compatibility & Applications:
- No specific HVAC equipment models/series are listed for this part in the provided sources.
- Intended for use where a 12" x 24" x 1" fiberglass throw-away filter is specified for the system's filter slot.
- Must only be used where the manufacturer specifies this exact part number: 274120240.
Installation & Operation Notes:
- The provided sources do not include step-by-step installation instructions for this filter.
- Replace/install the filter according to the HVAC unit's service/owner documentation for the specific system to confirm correct fit and orientation.
Maintenance & Troubleshooting:
- This filter is commonly treated as a routine consumable that users replace on a regular schedule (reviewers frequently mention monthly changes, and more frequent changes in high-dust/pet situations).
- User feedback suggests replacement is primarily driven by maintenance cadence rather than a single failure mode; keeping airflow consistent is a common reason users cite for frequent changes.
User Reviews & Q&A Summary:
- Review themes:
- "Perfect fit" / correct size match for the intended return/filter rack
- Value-focused purchases (good price, convenient to buy in quantity)
- Many users replace monthly; some mention vacuuming debris off occasionally between changes
- A few reviewers specifically prefer these as "full size" filters (not "nesting" style filters)