The BOM number is the last three characters of a Copeland compressor model, such as the 522 in ZR48K3E-TFD-522. Copeland's scroll BOM technical information says it defines the housing version, sight glass, service valves, electrical box rating and accessories. Two compressors with the same base model and different BOMs can differ in those features.
What the BOM number is
BOM stands for bill of materials. On a Copeland scroll compressor it is the suffix at the end of the model string. In Copeland's own example, ZR48K3E-TFD-522, the BOM is 522. The letters and digits before it describe the compressor itself. The BOM tells you how that compressor is built and equipped.
Copeland's technical information (TI_Scroll_BOM_EN_Rev00) lists what the BOM defines, including the housing version, whether there is a sight glass, the service valves, the electrical box IP rating and accessories. It also names motor protection type and mounting parts. It gives BOM 455 as a worked example: brazed stub tubes, a sight glass, a Schrader service valve, an IP21 box rating, internal motor protection and no mounting parts.
The model before the BOM has its own structure. Copeland's nomenclature table in the same document covers it. This article stays with the BOM.
How the BOM shows up on our listings
Our Copeland compressor titles keep the BOM at the end of the Copeland model, followed by a York part number after the pipe. Copeland ZR81KCE-TFD-950 Scroll Compressor | York 027-04314-008 ends in 950. Copeland ZP154KCE-TED-455 Scroll Compressor | York 015-04022-644 ends in 455.
The titles also show why the BOM matters when you order. Copeland ZP120KCE-TF5-910 Scroll Compressor | York 015-05266-101 and Copeland ZP120KCE-TF5-950 Scroll Compressor | York 015-04060-101 are identical up to the BOM, 910 versus 950. They are two separate listings with two different York numbers. The same pattern appears with ZP235KCE-TWD-951 and ZP235KCE-TWD-965.
The titles tell you that the BOM differs. They do not tell you what the difference is. That answer is in Copeland's TI, not in our listing, and we do not guess at it.
A worked example of comparing strings
Suppose the nameplate reads ZP120KCE-TF5-950. The matching title is the one that ends in ZP120KCE-TF5-950, which is the listing with York 015-04060-101. The ZP120KCE-TF5-910 listing is a different BOM. It is not a second choice for the same nameplate. This is an example of comparing strings, not a fitment statement for any unit.
The listing pages help here. Our compressor listing pages repeat the full model and the York number in a specification table. Some give a voltage and phase; others say "See nameplate" in place of one. When a page defers to the nameplate, the nameplate is the reference.
How to match a replacement by BOM
- Read the full model off the compressor nameplate. Include every character, down to the last three. A photo of the nameplate is the safest record.
- Compare the whole string to the listing title. The base model alone is not enough. Check the electrical letters and the BOM as well.
- If the BOM is identical, you have matched on that point. You still need to confirm voltage and phase from the nameplate and the equipment the compressor sits in.
- If the BOM differs, look both BOMs up in the TI. Copeland's tables cross-reference current service BOMs to obsolete BOMs, so an old BOM on your nameplate may map to a current one.
- Compare the features the BOM controls. Housing version, sight glass, service valves, electrical box rating and accessories are the items Copeland names. Check each against the old compressor and against your piping and wiring.
- Send us the nameplate before you order. We will compare it to the listing and tell you what we can and cannot confirm.
If your BOM is obsolete
Copeland's TI is the reference for obsolete BOMs. Its tables map obsolete BOMs to current service BOMs. We do not publish substitutions of our own, and we do not infer a replacement from capacity or from a forum post.
Our listings can help in one other way. A York-numbered listing can show the York numbers it replaces on its product page. For example, the page for York 015-04055-114 Compressor, Scroll, ZP154KCE-TED-950 | OEM Chiller Part lists 015-04055-104, 015-04055-106, 015-04064-114 and 027-03580-000 under Replaces. That is York's replacement data for York's number. It is not a Copeland BOM cross-reference, and the two should not be mixed. Our article on HVAC part number supersessions explains how to read replaced numbers.
What comes with a service compressor
The TI summary we worked from lists BOM features, not loose parts in the carton. We do not state what ships with a given service compressor. If a specific accessory or valve type matters to your installation, ask before you order. Accessories and service valves are both things the BOM defines, so they are worth checking in the TI.
What to send us
- A photo of the compressor nameplate, with the full model legible
- The serial number
- The York part number, if the compressor is in a York chiller
- The equipment model the compressor sits in
- Whether the compressor failed from an electrical fault or a mechanical one, if you know
Compressor listings that show BOMs
| Component | Role in this issue | Where to find it |
|---|---|---|
| Copeland scroll, BOM 950 | Title ends in 950; York number follows the pipe | Copeland ZR81KCE-TFD-950 Scroll Compressor | York 027-04314-008 |
| Copeland scroll, BOM 455 | Title ends in 455; the same BOM number the TI uses as its worked example | Copeland ZP154KCE-TED-455 Scroll Compressor | York 015-04022-644 |
| Copeland scroll, BOM 910 | Same model up to the BOM as the 950 listing below | Copeland ZP120KCE-TF5-910 Scroll Compressor | York 015-05266-101 |
| Copeland scroll, BOM 950 | Same model up to the BOM as the 910 listing above | Copeland ZP120KCE-TF5-950 Scroll Compressor | York 015-04060-101 |
| Copeland scroll compressors | Full set of Copeland listings | Copeland Scroll Compressors |
| Chiller compressors | Compressors across brands with York cross-references | Chiller Compressors |
Scope: The BOM definition and the BOM 455 example come from Copeland's scroll BOM technical information, TI_Scroll_BOM_EN_Rev00. Other Copeland compressor families need their own documents. The listing pairs above show only what the titles show. We have not matched any listing to a particular unit.
Before you order
Confirm the full compressor model, including the BOM, and the serial number from the nameplate before ordering. Search the Copeland or York number in our site search, browse the Copeland scroll compressors collection and read our guide to finding the correct part from the model and serial number. To confirm fit, contact us or email help@totalhvacparts.com with the nameplate photo.
Frequently Asked Questions
What is the BOM number on a Copeland compressor?
It is the last three characters of the model, such as 522 in ZR48K3E-TFD-522. Copeland's scroll TI says the BOM defines the housing version, sight glass, service valves, electrical box IP rating and accessories.
Is a Copeland compressor with BOM 522 the same as one with BOM 950?
Not on the model alone. The BOM defines features such as housing, valves and box rating, so compare both BOMs in Copeland's TI and confirm voltage, phase and your equipment before ordering. Send us the nameplate and we will check it against the listing.
How do I find the replacement for an obsolete Copeland BOM?
Copeland's TI includes tables that cross-reference current service BOMs to obsolete BOMs. Start there with the full model from the nameplate. We do not publish substitutions beyond what a listing title shows, so contact us to confirm a specific match.
Is the BOM the same thing as the York part number?
No. The BOM is Copeland's three-character suffix on the compressor model. The York number is York's own part number, which our titles print after the pipe. Both appear on one listing, and neither one is derived from the other.
Sources
- Copeland technical information, Scroll BOM, TI_Scroll_BOM_EN_Rev00
- Product titles and product pages as listed on this site
Compressor replacement involves line-voltage electrical connections, refrigerant under pressure, hot surfaces and heavy equipment. Service should be performed only by qualified personnel, following the equipment manufacturer's instructions and your facility's lockout/tagout procedures.