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π’ New ICP Crossover System Ratings: What Contractors Need to Know
Date: May 6, 2025
Applies To: D5CUHA / D5CURA with ICP Fan Coils and Furnaces
Purpose: Improved performance and updated AHRI ratings for R-454B crossover systems.
π§ Why This Matters
Contractors reported that some R-454B crossover systems werenβt delivering expected efficiency. Carrier responded by improving the software inside the D5CUHA/D5CURA condensers, leading to better performance and more AHRI-certified combinations.
π Whatβs New
β Updated Compressor Algorithm
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Boosts performance
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Expands compatibility with more indoor units
β New AHRI Ratings
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Most system combinations now perform better
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Ratings include an identifier:
+TIC2025-0016
β More Certified Combos
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More fan coil and furnace matches are now officially rated
π Where to Look
When checking AHRI ratings, you may see two entries for the same outdoor model:
-
Original rating
-
New rating (with
+TIC2025-0016)
Example:
D5CUHAH30AAK β original rating
D5CUHAH30AAK +TIC2025-0016 β new, higher performance
π Sample Rating Comparison (30k Model)
| Combo | SEER2 | EER2 | Htg. Capacity | HSPF2 | COP @ 5Β°F | CCHP Ratio |
|---|---|---|---|---|---|---|
| Original | 15.2 | 9.5 | 34,400 | 8.5 | 1.75 | 88% |
| New (+TIC2025-0016) | 16.5 | 10 | 36,000 | 9.0 | 1.96 | 89% |
π How to Get the New Performance
1. Factory Upgrade
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Same model number
-
New product number ends in
-02
e.g.D5CUHAH30AAK01βD5CUHAH30AAK02
2. Field Upgrade
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Flash the board (tools provided)
-
Or replace the board during install
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No rating plate change needed
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Full instructions will come in the TIC by May 19
π Timing & Rollout
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Factory production with the updated board starts this month
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Serial number cutoffs will be announced soon
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TIC documentation available by May 19, 2025
βοΈ Quick Recap
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Equipment model number stays the same
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New rating only applies with updated control board
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Look for
+TIC2025-0016to confirm improved system -
Use either factory-provided or field-installed upgrade path
