ACiQ ACIQ-18ZS-HP230C: certified ratings
Cooling 16,800–18,000 BTU/h · SEER2 up to 24 · HSPF2 up to 12.2 · up to 73% of 47°F heating capacity at 5°F · Cold climate: Yes
This outdoor unit has 7 certified indoor pairings, so it is likely a multi-zone or multi-indoor-option unit; ratings differ by pairing. Series: ACIQ Series. Refrigerant: R-454B. Compressor: continuously variable (inverter), per ENERGY STAR.
All certified pairings (highest HSPF2 first)
| Indoor unit | Series | Cooling BTU/h | SEER2 | EER2 | HSPF2 | Heat 47°F | Heat 17°F | Heat 5°F | % of 47°F cap. at 5°F | COP 5°F | Cold climate | Refrigerant | AHRI ref. | ENERGY STAR record |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SCC-18-HH-MB | ACIQ Series | 18,000 | 22.2 | 12.5 | 12.2 | 18,000 | 14,000 | 13,100 | 73% | 2.24 | Yes | R-454B (GWP:470 | Lower GWP) | 217739020 | 4510279 |
| ACIQ-18CC-HH-MC | ACIQ Series | 16,800 | 20.7 | 12.5 | 11.4 | 18,000 | 13,900 | 12,800 | 71% | 2.2 | Yes | R-454B (GWP:470 | Lower GWP) | 218471565 | 4623978 |
| ACIQ-18CD-HH-MC | ACIQ Series | 17,500 | 20 | 13.3 | 11.3 | 20,000 | 14,900 | 14,200 | 71% | 2.4 | Yes | R-454B (GWP:470 | Lower GWP) | 218471567 | 4623976 |
| ACIQ-18WS-HP230C | ACIQ Series | 18,000 | 24 | 13.5 | 11.1 | 18,000 | 15,000 | 13,000 | 72% | 2.35 | Yes | R-454B (GWP:470 | Lower GWP) | 216980883 | 3997797 |
| ACIQ-018W-BL-MD | ACIQ Series | 18,000 | 24 | 13.5 | 11.1 | 18,000 | 15,000 | 13,000 | 72% | 2.35 | Yes | R-454B (GWP:470 | Lower GWP) | 218457918 | 4619228 |
| ACIQ-18W-HH-MD | ACIQ Series | 18,000 | 23.5 | 12.7 | 10.8 | 18,000 | 15,000 | 12,800 | 71% | 2.1 | Yes | R-454B (GWP:470 | Lower GWP) | 218471564 | 4623979 |
| ACIQ-18FM-HH-MD | ACIQ Series | 18,000 | 22.3 | 12.5 | 10.4 | 18,000 | 13,700 | 12,800 | 71% | 2.05 | Yes | R-454B (GWP:470 | Lower GWP) | 218471566 | 4623977 |
"% of 47°F capacity at 5°F" = heating capacity at 5°F ÷ heating capacity at 47°F, both from the ENERGY STAR record (ENERGY STAR's cold-climate designation requires ≥70% and COP ≥1.75 at 5°F; criteria).
Rough running-cost yardstick (top-rated pairing)
| kWh per 1,000 full-load hours | Cost at U.S. avg rate | |
|---|---|---|
| Cooling (18,000 BTU/h ÷ SEER2 22.2) | 811 | $148 |
| Heating (18,000 BTU/h ÷ HSPF2 12.2) | 1,475 | $270 |
Cost estimates: cooling kWh ≈ cooling capacity × full-load hours ÷ SEER2 ÷ 1,000; heating kWh ≈ 47°F heating capacity × full-load hours ÷ HSPF2 ÷ 1,000. "Per 1,000 full-load hours" is a yardstick for comparing systems, not a prediction of your bill; your hours depend on climate, house and settings. Rate: U.S. average residential 18.31¢/kWh (EIA, July 2026 (preliminary)).
Estimate with your own hours and rate · Compare with another system
Similar-capacity single-zone units from other DIY brands
No single-zone DIY-brand unit in the same capacity class.
See ACiQ on the manufacturer's site (plain link, not an affiliate link)
We have not tested or installed this equipment. Data gaps: price, sound level, line-set length, warranty and installation requirements are not in ENERGY STAR data. Confirm the AHRI reference number on your quote matches a certified pairing.