Heat pump model numbers starting YZ
8 certified units whose model number starts YZ, out of every unit in the A to Z. Updated Oct 17, 2026.
The units
One row per certified model number. All 8 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| YZT24B21 | central | 24,000 Btu (2-ton) | 1 | 63 |
| YZT36B21 | central | 36,000 Btu (3-ton) | 1 | 27 |
| YZT48B21 | central | 48,000 Btu (4-ton) | 1 | 18 |
| YZT60B21 | central | 54,000 Btu (4.5-ton) | 1 | 18 |
| YZV24B21 | central | 24,000 Btu (2-ton) | 1 | 1 |
| YZV36B21 | central | 30,000 Btu (2.5-ton) | 1 | 1 |
| YZV48B21 | central | 42,000 Btu (3.5-ton) | 1 | 1 |
| YZV60B21 | central | 54,000 Btu (4.5-ton) | 1 | 1 |
Other groups
Every model number group, A to Z
Find a model by its number, its indoor unit, or its AHRI number