Last updated: April 22, 2026
Installing a heat pump that doesn't qualify for HEAR's $8,000 rebate is the single most expensive mistake an HVAC contractor can make on a HEAR job. The client expected a rebate, the job is done, and the application comes back denied because the model number doesn't appear on the approved list or doesn't meet the cold climate efficiency standard for that state. This guide covers exactly what you need to verify before you quote equipment on any cold-climate HEAR job.
Standard heat pumps lose significant heating capacity as outdoor temperatures drop. A heat pump rated at 100% capacity at 47°F (standard AHRI test condition) may deliver only 50–70% of that capacity at 5°F — the kind of temperature common in Minnesota, Wisconsin, Michigan, upstate New York, Massachusetts, and Colorado during winter.
HEAR programs in these states require cold-climate certified heat pumps because:
Effective January 1, 2023. These are the performance floors — CEE Advanced Tier and ENERGY STAR Most Efficient set higher bars.
Used by several states and utilities. Slightly different thresholds from ENERGY STAR for some configurations.
Beginning in 2023, AHRI switched from HSPF (Heating Seasonal Performance Factor) to HSPF2 as the standard efficiency metric for heat pumps. The calculation methodology changed, and HSPF2 values are approximately 15% lower than the equivalent HSPF value. Key points:
| State | Climate Zone | Cold Climate Required? | Specification Used |
|---|---|---|---|
| Minnesota | Zone 6–7 | Yes | ENERGY STAR Cold Climate v6.1 expected at launch |
| Wisconsin | Zone 6–7 | Yes | ENERGY STAR Cold Climate or CEE Advanced Tier |
| Michigan | Zone 5–6 | Yes | CEE Advanced Tier; NEEP CCAHP for some utilities |
| New York | Zone 4–6 | Yes (Zones 5–6) | NYSERDA Clean Heat: ENERGY STAR Cold Climate |
| Massachusetts | Zone 5–6 | Yes | Mass Save: CEE Advanced Tier required for cold climate |
| Illinois | Zone 5 | Yes | CEE Advanced Tier or ENERGY STAR Cold Climate |
| Colorado | Zone 5–7 | Yes (Zones 5+) | CEE Advanced Tier for Front Range; varies by altitude |
| Maine | Zone 6–7 | Yes | Efficiency Maine: NEEP CCAHP or ENERGY STAR Cold Climate |
| Oregon | Zone 4–6 | Zone-dependent | Coastal Zone 4 may allow standard; inland Zone 5–6 requires CC |
| Washington | Zone 4–6 | Zone-dependent | Western WA Zone 4–5; Eastern WA Zone 5–6 requires CC |
| Maryland | Zone 4–5 | Verify | MEA program: ENERGY STAR; cold climate spec varies by county |
| North Carolina | Zone 3–5 | Mountains only | Standard ENERGY STAR for most NC; Blue Ridge Zone 5 may require CC |
| Georgia | Zone 3–4 | Generally not required | Standard ENERGY STAR certification typically sufficient |
Verify with each state program before quoting equipment. State specifications can change when programs update their approved product lists.
ashplist.org is the fastest way to verify any specific model number. NEEP maintains a database of heat pumps with performance data at 47°F and 5°F, HSPF2, and tier designations. To verify:
The ENERGY STAR Certified Heat Pumps database at energystar.gov lists models that have achieved ENERGY STAR Most Efficient or standard ENERGY STAR certification. Filter by "Cold Climate" to see models with the CC designation. Not all ENERGY STAR heat pumps are Cold Climate certified — the CC designation is separate.
For HEAR programs requiring CEE Advanced Tier (the most common requirement): the Consortium for Energy Efficiency publishes its qualified products list at cee1.org. CEE Advanced Tier is a higher bar than standard ENERGY STAR and typically aligns with cold-climate performance capability.
These product lines are generally associated with cold climate performance — but verify the specific model number on NEEP's list before every proposal. New models are added and old ones discontinued regularly.
| Brand | Cold Climate Product Line | Notes |
|---|---|---|
| Mitsubishi | Hyper-Heat H2i series (e.g., MSZ-FH, MSZ-GL, SUZ-KA) | Industry benchmark for cold climate; rated to -13°F operation. Verify individual models at ashplist.org. |
| Fujitsu | Halcyon ductless, Airstage ducted (with "LF" or "HFI" designation) | Many models rated to -15°F. Check model suffix for cold climate designation. |
| Daikin | Aurora series; Daikin Fit (ducted) | Aurora line designed for cold climates. Standard Daikin may not qualify — confirm model. |
| Bosch | IDS Premium, IDS 2.0 | Strong cold climate specs, often used in New England HEAR programs. |
| LG | LGRED° (Low Ambient Heat Pump), Multi V5 | LGRED line rated to -13°F; strong COP at 5°F. Not all LG models qualify — specify LGRED. |
| Carrier | Infinity 26 (24VNA6, 25VNA6) | Carrier's flagship cold climate line. Verify model suffix — not all Infinity units are cold climate. |
| Bryant | Evolution 26 (288BNV) | Bryant's cold climate line; same underlying equipment as Carrier Infinity. |
| Trane / American Standard | XV20i (select models), XR17 (select) | Trane has both qualifying and non-qualifying models. Confirm at ashplist.org before quoting. |
| Lennox | XP21, XP25 (with CC rating) | Look for the "CC" designation in the model spec sheet and AHRI certification. Standard XP21 may not meet cold climate COP threshold. |
| Rheem / Ruud | Prestige series, Classic Plus (select) | Newer Rheem cold climate models have improved 5°F performance. Verify by model number — entry-level Classic does not qualify in most cold climate states. |
A heat pump can be ENERGY STAR certified (qualifying it for some programs in warmer climates) without meeting the Cold Climate specification. The Cold Climate designation requires the manufacturer to test and certify performance at 5°F specifically. Many mid-range heat pumps are ENERGY STAR but are not rated for meaningful output at 5°F. In cold climate states, standard ENERGY STAR alone is not sufficient.
Mitsubishi makes cold-climate qualifying models (Hyper-Heat H2i). Mitsubishi also makes standard heat pumps that don't meet cold-climate specifications. "It's a Mitsubishi" is not a qualification. The model number is what matters. Always verify the specific model on NEEP's list.
HSPF (or HSPF2) is a seasonal average efficiency metric. It doesn't tell you what the system does at 5°F specifically — a mild-climate heat pump with high efficiency at 47°F can have poor performance at 5°F while still showing a respectable HSPF2. The COP at 5°F is the relevant metric for cold climate qualification. Look at the AHRI certification data or the NEEP list for this number.
If your distributor introduced a new model year or updated spec, the old model's HEAR approval doesn't transfer. Model-year updates sometimes change efficiency ratings. Re-verify annually or when a new model number appears on invoices.
State HEAR programs update their approved equipment lists as they launch and iterate. The IRA Practitioner Brief tracks state-by-state program updates, equipment list changes, and equipment-related application rejections.