Our take in 30 seconds
Best for: cold and very cold climatesStrengths
- Keeps 83% of its heat at 5°F, so backup heat rarely runs
- Heating efficiency (HSPF2 10.5) beats 85% of models
- Variable-speed compressor: quieter, steadier temperatures and better humidity control
- Uses newer, lower-impact R-454B refrigerant
Good to know
- No notable drawbacks in the certified data.
Running-cost calculator
Pre-filled with EIA prices · edit any fieldUses the base certified SEER2 (16) and HSPF2 (10.5). Assumes the unit is correctly sized. How we calculate.
Heating capacity as it gets colder
A heat pump's output falls as outdoor temperature drops. This is the certified heat output of the ACiQ ACIQ-24-HPD at the three ENERGY STAR test temperatures (cooling capacity is 24,000 BTU/h for reference).
Retention at 17°F: 80% · at 5°F: 83%. Learn how to use these numbers in our cold-climate guide.
Estimated running cost in every state
Same unit, very different bills: from about $609 a year in Louisiana to $2,260 in Maine, driven by local electricity prices and how much heating or cooling the climate needs. Click a column to sort.
| State | Price | Heating | Cooling | Total / yr |
|---|---|---|---|---|
| Louisiana | 12.87¢ | $223 | $386 | $609 |
| Washington | 14.63¢ | $616 | $77 | $693 |
| Florida | 14.99¢ | $167 | $540 | $707 |
| Mississippi | 14.43¢ | $322 | $390 | $711 |
| Nevada | 12.72¢ | $378 | $343 | $721 |
| Tennessee | 13.42¢ | $465 | $262 | $727 |
| Oregon | 15.92¢ | $631 | $107 | $738 |
| Arizona | 15.05¢ | $261 | $497 | $758 |
| North Carolina | 14.95¢ | $481 | $292 | $773 |
| Kentucky | 13.80¢ | $547 | $228 | $774 |
| Arkansas | 14.37¢ | $463 | $323 | $786 |
| Utah | 13.31¢ | $626 | $180 | $806 |
| South Carolina | 15.76¢ | $429 | $378 | $808 |
| Georgia | 15.90¢ | $433 | $382 | $815 |
| Texas | 15.91¢ | $355 | $477 | $832 |
| Idaho | 13.37¢ | $695 | $140 | $836 |
| Alabama | 16.33¢ | $445 | $392 | $837 |
| Oklahoma | 14.82¢ | $514 | $333 | $847 |
| New Mexico | 16.51¢ | $613 | $248 | $861 |
| Nebraska | 13.54¢ | $704 | $183 | $887 |
| West Virginia | 16.31¢ | $727 | $196 | $923 |
| Missouri | 16.02¢ | $674 | $264 | $939 |
| Kansas | 15.47¢ | $690 | $255 | $945 |
| Virginia | 17.64¢ | $655 | $291 | $946 |
| Wyoming | 14.43¢ | $893 | $108 | $1,002 |
| Colorado | 17.17¢ | $850 | $180 | $1,031 |
| North Dakota | 13.31¢ | $956 | $90 | $1,046 |
| Indiana | 17.02¢ | $843 | $217 | $1,060 |
| Delaware | 18.70¢ | $787 | $280 | $1,068 |
| Montana | 15.57¢ | $964 | $105 | $1,069 |
| South Dakota | 15.15¢ | $938 | $148 | $1,086 |
| California | 29.75¢ | $663 | $446 | $1,109 |
| Iowa | 17.06¢ | $972 | $192 | $1,164 |
| Ohio | 19.38¢ | $960 | $233 | $1,192 |
| Maryland | 21.40¢ | $901 | $321 | $1,222 |
| Illinois | 19.32¢ | $1,005 | $232 | $1,236 |
| Minnesota | 17.20¢ | $1,150 | $142 | $1,292 |
| Pennsylvania | 21.77¢ | $1,078 | $261 | $1,339 |
| Wisconsin | 19.41¢ | $1,202 | $175 | $1,376 |
| New Jersey | 24.61¢ | $1,097 | $332 | $1,429 |
| District of Columbia | 25.98¢ | $1,029 | $429 | $1,458 |
| Michigan | 22.99¢ | $1,366 | $207 | $1,573 |
| Connecticut | 24.51¢ | $1,335 | $239 | $1,574 |
| Vermont | 23.84¢ | $1,535 | $161 | $1,696 |
| Rhode Island | 28.18¢ | $1,535 | $254 | $1,789 |
| New York | 28.65¢ | $1,561 | $279 | $1,840 |
| Hawaii | 47.18¢ | $58 | $1,840 | $1,898 |
| New Hampshire | 27.64¢ | $1,711 | $207 | $1,918 |
| Massachusetts | 30.48¢ | $1,736 | $274 | $2,010 |
| Alaska | 29.41¢ | $2,185 | $44 | $2,229 |
| Maine | 32.11¢ | $2,067 | $193 | $2,260 |
Same equipment sold under other brands
These listings share the same certifying manufacturer (1HVAC Energy, LLC) and identical certified capacities and efficiency ratings, so they are almost certainly the same hardware with a different badge. If you get quotes for any of them, you are comparing installation price and warranty, not equipment. How rebadging works.
- 1HVAC ACIQ-24-HPD
Similar-size alternatives
Other ducted split system units within ±15% of this model's cooling capacity, sorted by efficiency. Cost difference is versus the ACiQ ACIQ-24-HPD at U.S.-average rates.
| Model | Cooling BTU/h | SEER2 | HSPF2 | 5°F kept | Est. yearly cost | |
|---|---|---|---|---|---|---|
| Carrier 27VNA324A*030* | 23,800 | 18–23 | 10.5 | 82% | $1,044 (+$25) | Compare |
| Rheem RP19AY24AJVC | 22,800 | 20–21 | 10 | 81% | $925 (−$94) | Compare |
| Trane 5TWR7024A1 | 24,000 | 15.2–17.1 | 11 | 79% | $907 (−$112) | Compare |
| Trane 5TWX7024A1 | 24,000 | 15.2–18 | 11 | 79% | $907 (−$112) | Compare |
| Bryant 37MUHAQ24AA3 | 24,000 | 16–18.7 | 10.5 | 86% | $991 (−$28) | Compare |
| Rheem RD18AY24AJVC | 21,400 | 17–19 | 10 | 77% | $949 (−$70) | Compare |
Full specifications
| Brand | ACiQ |
| Outdoor model | ACIQ-24-HPD |
| Certified by | 1HVAC Energy, LLC |
| Product type | Ducted split system |
| Compressor | Variable-speed (inverter) |
| Refrigerant | R-454B |
| Cooling capacity | 24,000 BTU/h |
| Nominal size | 2 tons |
| SEER2 (certified range) | 16 – 18.6 |
| EER2 (best) | 12 |
| HSPF2 (best) | 10.5 |
| Heating capacity @ 47°F | 26,000 BTU/h |
| Heating capacity @ 17°F | 20,800 BTU/h |
| Heating capacity @ 5°F | 21,600 BTU/h |
| COP @ 5°F | 2.14 |
| ENERGY STAR cold-climate | Yes |
| Certified indoor pairings | 13 |
| Latest certification | 2026-10 |
Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), retrieved November 7, 2026. Capacities and HSPF2 are the highest values across certified pairings; confirm your exact system's AHRI reference number with your installer.
Frequently asked questions
How much does the ACiQ ACIQ-24-HPD cost to run per year?
At the U.S. average residential electricity price of 18.16¢/kWh and typical national heating and cooling hours, we estimate about $1,019 per year ($719 heating, $300 cooling). It ranges from about $609 in Louisiana to $2,260 in Maine.
Does the ACiQ ACIQ-24-HPD work in cold weather?
Yes. It is ENERGY STAR cold-climate certified and delivers 21,600 BTU/h at 5°F, 83% of its 47°F capacity, with a COP of 2.14 at 5°F.
What size is the ACiQ ACIQ-24-HPD?
It is rated at 24,000 BTU/h of cooling, roughly 2 tons, and 26,000 BTU/h of heating at 47°F. Proper sizing should be confirmed with a Manual J load calculation.
Is the ACiQ ACIQ-24-HPD the same as the 1HVAC ACIQ-24-HPD?
Very likely. Both are certified by 1HVAC Energy, LLC with identical capacities and efficiency ratings in the ENERGY STAR database, which indicates the same equipment sold under different brands.