HVAC Part Number Cross-Reference Guide

HVAC manufacturers regularly discontinue part numbers and replace them with updated versions — a process called supersession. If the part number on your old control board, ignitor, or gas valve turns up "discontinued," it usually has a direct factory replacement under a new number. This guide cross-references over 900 old part numbers from our catalog to the current in-stock replacement.

Find your brand

Brand guide	Cross-references
Heil Quaker / ICP cross-reference	114 part numbers
Goodman cross-reference	131 part numbers
Honeywell / Resideo cross-reference	96 part numbers
Nordyne cross-reference	32 part numbers
York cross-reference	31 part numbers
Lochinvar cross-reference	29 part numbers
Rheem cross-reference	28 part numbers
SunTec cross-reference	28 part numbers
Bradford White cross-reference	27 part numbers
ICM cross-reference	23 part numbers
Carrier cross-reference	22 part numbers
ASCO cross-reference	21 part numbers
All other brands (A–Z)	281 part numbers across 43 brands

How to use a cross-reference

Find the part number printed on your old part (not the equipment model number) in the left column, and the right column shows the current replacement we stock. Every listed part ships same day from our warehouse. If your number isn't listed, it may still cross to something we carry — try the AI Parts Finder with your old part number, or contact us and we'll look it up.

Why part numbers change

Manufacturers consolidate part families, update components for reliability, and rebrand product lines (for example, Honeywell home controls now ship as Resideo). The replacement is typically a drop-in fit, but always confirm against your equipment model — our team can verify before you order.

Cross-references above come from supersession and replacement data in our product listings. Part numbers can vary by equipment model and serial range — if you're not 100% sure, use our AI Parts Finder or contact us with your model number and we'll confirm the right part.