When an air comfort repair calls for a replacement part, the key choice is not simply the lower listed price-it is whether the failed piece is a filter or a display box assembly. The Comfort Aire Display Box Subassy Box and Comfort Aire Filter serve distinctly named roles, even though both are new Comfort Aire parts. Start with the required part type and the model name involved.
Quick verdict
Pick the Comfort Aire Air Conditioner Part # 17220300A17150 - Display Box Subassy Box when the replacement calls specifically for a display box assembly and the air conditioner is among its named Comfort-Aire applications. Pick the Comfort Aire Air Conditioner Part # 12100204000202 - Filter when the required component is the filter carrying that part number. The listed prices are separated by $29.56, but the component role is the deciding factor: neither part is an interchangeable substitute for the other.
At-a-glance comparison
| Listed option | Listed price | Part role named in title | Selected Comfort-Aire model references |
|---|---|---|---|
| Display Box Subassy Box, part #17220300A17150 | USD 42.17 | Display Box Subassy Box | REG-123L, REG-123M, REG-183J-20A, REG-81M, REG-183L, REG-123J, REG-183J, REG-183M |
| Filter, part #12100204000202 | USD 12.61 | Filter | REG-123J, REG-123H, REG-123M, REG-81J, REG-81M |
Where each part wins
Choose the Display Box Subassy Box for a display-box replacement
The Display Box Subassy Box is the focused pick for a repair that identifies part #17220300A17150 or its associated part references, including 17220300A01677. Its named applications include several REG-series Comfort-Aire units, notably REG-183J-20A and REG-183M. That makes it the relevant choice when the needed replacement is expressly the display box assembly rather than an air filter.
Choose the Filter for the listed filter part number
The Filter is the direct pick when the required part is #12100204000202, also associated with MDA12100204000202 and CMF12100204000202. Along with several Comfort-Aire REG models, its named applications include Artic King, Keystone, and Midea model lines. Its lower listed price is relevant only after the filter role and part number align with the repair.
Product notes
Comfort Aire Air Conditioner Part # 17220300A17150 - Display Box Subassy Box
This is the appropriate candidate for a replacement request specifically centered on a Display Box Subassy Box. The named Comfort-Aire applications include REG-123L, REG-123M, REG-183J-20A, REG-81L, REG-183L, REG-123J, REG-183J, and REG-183M, giving this part a clear set of model references. It is also listed as new. Choose it when part #17220300A17150-or the associated 17220300A01677 reference-matches the component being replaced. Its main limitation is equally clear: this is a display box assembly, not a filter. At USD 42.17, it is the higher-priced listed option, so selecting it makes sense only for that specific component role.
Comfort Aire Air Conditioner Part # 12100204000202 - Filter
The Comfort Aire Filter is the better fit for a replacement request that explicitly calls for part #12100204000202. Its named Comfort-Aire applications include REG-123J, REG-123H, REG-123M, REG-81J, and REG-81M. The part is also associated with MDA12100204000202 and CMF12100204000202, and it is listed as new. The model references extend to named Artic King, Keystone, and Midea units, which can be useful when the same filter part is identified across those lines. The limitation is functional rather than price-related: a filter is not a replacement for the Display Box Subassy Box. Choose it for the filter part number and filter role, not for a display-box repair.
Final choice by use case
For a Comfort-Aire REG-series unit needing the named display box assembly, choose the Display Box Subassy Box #17220300A17150. For a unit requiring the named filter, choose the Filter #12100204000202. The strongest decision is a part-for-part match: display box assembly needs point to the first option, while filter needs point to the second.
