For homeowners comparing the best cold climate heat pumps, the key difference is not just the efficiency number: it is how well the system fits your space, electrical setup, and winter temperatures. I rank the Cooper & Hunter Hyper Heat 12,000 BTU first for its stated heating operation down to -22°F and strong efficiency, while the DELLA 12,000 BTU is a compelling smaller-room alternative with a higher SEER2 figure and app or Alexa control. For a larger area, the DELLA Optima 18,000 BTU offers more capacity, though its specified heating limit is warmer at -13°F.
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The fourth option, Goodman’s 2.5-ton packaged heat pump, serves a different role: it is a whole-house or light-commercial packaged system, not a wall-mounted ductless mini-split. Its larger format and lower stated efficiency make it a poor apples-to-apples comparison with the DELLA and Cooper & Hunter units, but it may suit a building designed for packaged equipment. I weigh low-temperature claims, capacity, efficiency, controls, installation requirements, and the fit between system type and intended space. Cold-climate performance matters, but so does choosing a unit that can be installed and sized correctly.
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Key Takeaways
- Cooper & Hunter Hyper Heat is my coldest-weather pick: its stated heating range reaches -22°F, and its 24 SEER2 rating combines winter capability with efficient year-round operation.
- DELLA’s 12,000 BTU model is the efficiency-and-controls alternative: it lists 25 SEER2, Wi-Fi and Alexa controls, and coverage up to 550 square feet, but shares the -22°F heating claim.
- Choose capacity before smart features: the 18,000 BTU DELLA Optima is listed for spaces up to 1,000 square feet, but its heating operation is specified only down to -13°F.
- Goodman belongs in a different comparison: its 2.5-ton packaged design targets whole-house or light-commercial applications, not a single-room wall-mounted mini-split installation.
- Plan around installation and electrical requirements: these 230V systems need appropriate site preparation, and the DELLA units call for vacuuming and a 20A fuse.
| Cooper & Hunter Hyper Heat 12,000 BTU Wall-Mount Mini-Split Heat Pump, 230V, 24 SEER2 |  | Best Overall for Cold-Weather Single-Zone Heating | Cooling capacity: 12,000 BTU | Capacity: 1 ton | Voltage: 230V | VIEW LATEST PRICE | See Our Full Breakdown |
| DELLA 12,000 BTU Ductless Mini Split Heat Pump, 25 SEER2, 230V, Wi-Fi and Alexa, 16.4 ft Installation Kit |  | Best Value for Efficient Small-Zone Heating and Smart Control | Cooling capacity: 12,000 BTU | Heating capacity: 12,000 BTU/h | Coverage: Up to 550 sq. ft. | VIEW LATEST PRICE | See Our Full Breakdown |
| DELLA Optima 18,000 BTU Mini-Split Heat Pump, 23 SEER2, Wi-Fi and Alexa, 230V | | Best for Larger Single Zones | Cooling capacity: 18,000 BTU | Heating capacity: 19,000 BTU/h | Coverage: Up to 1,000 sq. ft. | VIEW LATEST PRICE | See Our Full Breakdown |
| Goodman 2.5 Ton 13.4 SEER Packaged Heat Pump GPHH33031 (R-32 Refrigerant) |  | Best Packaged-System Fit for Whole-House or Light-Commercial Projects | Capacity: 2.5 tons | Efficiency: 13.4 SEER | Refrigerant: R-32 | VIEW LATEST PRICE | See Our Full Breakdown |
| cold climate heat pump | Voltage | Efficiency | Cooling capacity | Noise level |
|---|---|---|---|---|
| Cooper & Hunter Hyper Heat 12, | 230V | 24 SEER2 | 12,000 BTU | 22.5 dB |
| DELLA 12,000 BTU Ductless Mini | 230V | 25 SEER2; 10.5 HSPF2 | 12,000 BTU | 30 dB in Mute Mode |
| DELLA Optima 18,000 BTU Mini-S | 230V | 23 SEER2; 10 HSPF2 | 18,000 BTU | As low as 34 dB in Mute Mode |
| Goodman 2.5 Ton 13.4 SEER Pack | 208/230V | 13.4 SEER | — | — |
More Details on Our Top Picks
Cooper & Hunter Hyper Heat 12,000 BTU Wall-Mount Mini-Split Heat Pump, 230V, 24 SEER2
I put the Cooper & Hunter Hyper Heat first because it combines a clearly stated -22°F heating operating limit with a 24 SEER2 rating and a 12,000 BTU single-zone format. That makes it a strong starting point for someone who needs one room or zone heated through severe winter conditions, without stepping up to the larger capacity of the 18,000 BTU DELLA Optima. Its inverter operation is intended to adjust output rather than simply cycle on and off, which can help maintain steadier room temperatures as conditions change.
Compared with the DELLA 12,000 BTU, the Hyper Heat gives up one point of listed SEER2 efficiency, but both are specified to operate down to -22°F. The DELLA adds Alexa compatibility and publishes HSPF2 and coverage figures; Cooper & Hunter instead includes a Wi-Fi Smart Kit and provides a notably quiet 22.5 dB noise figure. That sound level may appeal in a bedroom or quiet living space, though buyers should confirm which operating mode the figure represents before comparing it directly with another model’s mute-mode rating.
The included 16-foot installation kit covers common line-set needs, but it does not turn this into a do-it-yourself project: professional installation is required. Freight delivery is also coordinated to the nearest accessible point outside the home, so the homeowner may need to plan how equipment will be moved from there. I would skip this model if the goal is to heat a large open plan with a single small-capacity unit or if the home cannot support its 230V connection. For a correctly sized cold-climate zone, it is the most balanced pick in this lineup.
Pros:- Specified to operate in heating mode down to -22°F.
- 24 SEER2 efficiency with inverter operation.
- Includes Wi-Fi control and a 16-foot installation kit.
- Listed indoor noise level is 22.5 dB.
Cons:- Professional installation is required.
- Freight delivery reaches the nearest accessible point outside the home, which may complicate handling.
- Its 12,000 BTU capacity is intended for a zone, not unrestricted whole-house heating.
Best for: Buyers needing a 12,000 BTU ductless system for one zone where stated operation down to -22°F and quiet indoor operation matter.
Not ideal for: Homes needing whole-house coverage from one unit, buyers without 230V service, or anyone expecting a simple self-installation.
- Cooling capacity:12,000 BTU
- Capacity:1 ton
- Voltage:230V
- Efficiency:24 SEER2
- Heating range:Operates in ambient temperatures as low as -22°F
- Noise level:22.5 dB
- Refrigerant:R-454B
- Installation kit:16-foot insulated copper line set, communication cable, drainage extension, and accessories
Our verdict“I would choose the Cooper & Hunter Hyper Heat for a properly sized single zone that needs a strong stated low-temperature range and a balanced mix of efficiency and quiet operation.”
DELLA 12,000 BTU Ductless Mini Split Heat Pump, 25 SEER2, 230V, Wi-Fi and Alexa, 16.4 ft Installation Kit
The DELLA 12,000 BTU is my best-value-style pick for buyers who want a small-zone system with a strong efficiency specification and connected controls. It lists 25 SEER2 and 10.5 HSPF2, along with heating operation down to -22°F and coverage up to 550 square feet. That makes its published information more specific on seasonal heating efficiency and suggested room size than the Cooper & Hunter listing, even though both share the same stated minimum heating temperature.
Compared with the Cooper & Hunter, this DELLA gives you Wi-Fi and Alexa control plus a 16.4-foot pre-flared copper line set. Its 30 dB mute-mode figure is higher than Cooper & Hunter’s 22.5 dB listing, but the measurements are not presented in identical terms, so I would not assume they are directly comparable. Soft airflow and voice control may be more useful to some buyers than the quietest published number; others may prefer the simpler control setup of the Hyper Heat.
This model is not a shortcut around installation. The product information calls for a new outdoor unit, system vacuuming, and a 20A fuse, and a qualified installer should confirm the electrical and line-set requirements for the property. It is also a 230V system, so it may require electrical work where the right circuit is unavailable. I would favor it over the larger DELLA Optima for a room within its stated coverage range and over the Cooper & Hunter when Alexa compatibility and the listed 25 SEER2 figure lead the decision. I would not select it just because a room is under 550 square feet; insulation, climate, windows, and heat loss still determine the needed capacity.
Pros:- Lists 25 SEER2 and 10.5 HSPF2.
- Specified to heat down to -22°F.
- Offers app, remote, Wi-Fi, and Alexa controls.
- Includes a 16.4-foot pre-flared line set and drain hose.
Cons:- Installation requires vacuuming and a 20A fuse.
- Requires a new outdoor unit and compatible 230V supply.
- Its 30 dB figure applies to Mute Mode, so it is not directly comparable to every listed noise figure.
Best for: Buyers seeking a 12,000 BTU mini-split for a room listed up to 550 square feet who value Alexa or app control and published HSPF2 data.
Not ideal for: People without compatible 230V service, anyone seeking a system that avoids professional refrigerant-line work, or buyers needing larger-area capacity.
- Cooling capacity:12,000 BTU
- Heating capacity:12,000 BTU/h
- Coverage:Up to 550 sq. ft.
- Efficiency:25 SEER2; 10.5 HSPF2
- Voltage:230V
- Minimum heating temperature:-22°F
- Noise level:30 dB in Mute Mode
- Controls:Remote, app, Wi-Fi, and Alexa
Our verdict“I would pick this DELLA over the Cooper & Hunter when its higher listed efficiency, room-size guidance, and Alexa control matter more than the lowest published noise figure.”
DELLA Optima 18,000 BTU Mini-Split Heat Pump, 23 SEER2, Wi-Fi and Alexa, 230V
When the area to condition is too large for the 12,000 BTU options, the DELLA Optima offers a useful step up: 18,000 BTU cooling capacity and listed coverage up to 1,000 square feet. Its heating capacity is given as 19,000 BTU/h, and it retains app and Alexa controls. I rank it below the two 12,000 BTU units for cold-climate use because its stated heating operation reaches only -13°F, compared with -22°F for both smaller competitors.
That difference matters more than the larger capacity if the home routinely sees very low outdoor temperatures. The Cooper & Hunter and DELLA 12,000 BTU models have the stronger stated cold-weather operating limit, but they may be a poor size match for a large, high-heat-loss area. The Optima is the more relevant candidate for a larger open room when the local winter design conditions fit its specified range, and when a professional load calculation supports its capacity. Its 23 SEER2 and 10 HSPF2 ratings are respectable figures in this group, though it does not match the smaller DELLA’s listed 25 SEER2 or 10.5 HSPF2.
The Optima includes a 16.4-foot pre-flared copper line set and drain hose, with quiet operation listed as low as 34 dB in Mute Mode. It still requires 230V service, system vacuuming, and a 20A fuse, so the included parts do not remove the need for proper installation. I would skip it for a cold location where design temperatures fall below its stated limit unless an installer confirms its capacity and backup-heat plan are appropriate. I would also avoid using the advertised 1,000-square-foot coverage as a substitute for sizing: room layout, insulation, ceiling height, and exposure can shift the requirement substantially.
Pros:- 18,000 BTU cooling capacity with listed coverage up to 1,000 square feet.
- Heating capacity is listed at 19,000 BTU/h.
- Provides app, remote, and Alexa controls.
- Includes a 16.4-foot pre-flared copper line set and drain hose.
Cons:- Heating operation is specified down to -13°F, warmer than the -22°F limits listed for both 12,000 BTU alternatives.
- Requires 230V power, vacuuming, and a 20A fuse.
- Its 23 SEER2 rating is below the 25 SEER2 DELLA 12,000 BTU model.
Best for: Owners of a larger single zone who need more capacity than the two 12,000 BTU units and whose winter conditions fit the stated -13°F heating limit.
Not ideal for: Buyers in locations regularly colder than -13°F, small-room owners, or anyone without 230V service and a suitable installation plan.
- Cooling capacity:18,000 BTU
- Heating capacity:19,000 BTU/h
- Coverage:Up to 1,000 sq. ft.
- Efficiency:23 SEER2; 10 HSPF2
- Voltage:230V
- Heating operation:Down to -13°F
- Noise level:As low as 34 dB in Mute Mode
- Refrigerant:R-454B
Our verdict“I would choose the Optima for a larger, correctly sized zone in a climate that fits its -13°F operating specification, not as the first choice for the coldest locations.”
Goodman 2.5 Ton 13.4 SEER Packaged Heat Pump GPHH33031 (R-32 Refrigerant)
The Goodman is the outlier in this roundup, and I include it for buyers whose building calls for a packaged heat pump rather than a wall-mounted ductless system. At 2.5 tons, with a packaged installation type, inverter technology, and a multi-speed ECM motor, it is aimed at whole-house residential or light-commercial applications. That separates it from the three single-zone mini-splits, which focus on conditioning one room or area and publish much higher SEER2 figures.
Its listed 13.4 SEER is modest beside the 23 to 25 SEER2 figures supplied for the DELLA models and 24 SEER2 for Cooper & Hunter. The rating labels and product formats differ, so I would not treat the figures as a direct efficiency test, but this listing does not make the Goodman a standout for seasonal efficiency among these choices. The product details also do not provide a minimum outdoor heating temperature, so I cannot rank it as confidently for severe cold as the three mini-splits with explicit -22°F or -13°F operating limits.
Where the Goodman may make sense is a project planned around packaged equipment, with an installer who can verify that its capacity, duct or circuit arrangement, and electrical requirements fit the building. The all-aluminum evaporator coil and R-32 refrigerant are listed construction details, and the product includes a 10-year limited parts warranty when installed by a qualified professional. Those points do not resolve the missing low-temperature performance information. I would not choose this unit as a cold-climate specialist based on the supplied specifications alone, nor as a substitute for a ductless room-by-room system. It ranks fourth because its use case is more specialized and its cold-weather limits are not stated here.
Pros:- 2.5-ton packaged format for applications designed around this system type.
- Uses inverter technology and a multi-speed ECM motor.
- Lists an all-aluminum evaporator coil and R-32 refrigerant.
- Includes a 10-year limited parts warranty when installed by a qualified professional.
Cons:- The listed 13.4 SEER is modest beside the mini-splits’ stated efficiency figures.
- No minimum outdoor heating temperature is provided in the supplied specifications.
- Its packaged format serves a different installation need from the three wall-mounted ductless systems.
Best for: Owners or contractors planning a whole-house or light-commercial packaged-system installation who can verify cold-weather capacity and compatibility with the building.
Not ideal for: Buyers looking for a ductless mini-split, a published low-temperature heating limit, or the strongest listed efficiency among these four products.
- Capacity:2.5 tons
- Efficiency:13.4 SEER
- Refrigerant:R-32
- Voltage:208/230V
- Motor type:Multi-speed ECM
- Compressor type:Scroll
- Installation type:Packaged
- Warranty:10-year limited parts when installed by a qualified professional
Our verdict“I would consider the Goodman only for a building already suited to packaged equipment and after an installer confirms its cold-weather output, since the provided details do not establish a low-temperature operating limit.”
How We Picked
I ranked these products for buyers seeking a heat pump suited to cold-weather heating, rather than treating every unit with a heating function as an equal match. My main criteria are the stated minimum heating temperature, the system’s capacity and intended coverage, efficiency figures where supplied, and the practical demands of installation. A model specified to operate down to -22°F gets a stronger cold-climate position than one rated down to -13°F, although that figure alone does not tell a buyer how much heat a unit will deliver at a particular outdoor temperature.
I also separate ductless single-zone mini-splits from the Goodman packaged unit. They serve different building layouts and cannot be compared by capacity or SEER alone. I give weight to room-size guidance, voltage, controls, noise information, included line sets, and whether professional installation is required. Those details affect whether a product fits the home and project, not just how it looks on a spec sheet.
These rankings use the product details provided; I do not treat unlisted performance data as known. Cold-weather output curves, backup-heat requirements, local code rules, and installation costs can change the right choice. I recommend that buyers confirm load calculations, electrical compatibility, refrigerant handling requirements, and the manufacturer’s full technical documentation with a qualified installer before choosing a system.
| cold climate heat pump | Refrigerant | Coverage |
|---|---|---|
| Cooper & Hunter Hyper Heat 12, | R-454B | — |
| DELLA 12,000 BTU Ductless Mini | — | Up to 550 sq. ft. |
| DELLA Optima 18,000 BTU Mini-S | R-454B | Up to 1,000 sq. ft. |
| Goodman 2.5 Ton 13.4 SEER Pack | R-32 | — |
Factors to Consider When Choosing Best Cold Climate Heat Pumps
I would choose a cold-climate heat pump by matching winter performance and system format to the building, then comparing efficiency and controls. These four products do not all serve the same job: three are single-zone ductless mini-splits, while Goodman is a packaged unit. A careful comparison starts with those distinctions rather than with the largest efficiency number.
Check the heating limit against local winter conditions
The listed minimum heating temperature is a useful screening detail, not a complete description of cold-weather performance. Cooper & Hunter and the 12,000 BTU DELLA are both specified to operate down to -22°F; the 18,000 BTU DELLA Optima lists a limit of -13°F. Goodman’s supplied details do not state a minimum heating temperature. If your area can fall below a listed limit, ask an HVAC professional to check the manufacturer’s capacity tables and advise whether supplemental heat is needed.
Operating at a given outdoor temperature does not by itself tell you how much heating capacity remains at that temperature. Request output data at the local winter design temperature and review defrost behavior, controls, and backup-heat strategy. I would not treat one minimum-temperature claim as proof that a unit can carry the full heating load at that point.
Size by a load calculation, not square footage alone
The DELLA products list coverage of up to 550 square feet for the 12,000 BTU unit and up to 1,000 square feet for the 18,000 BTU Optima. Those figures can help sort the options, but they do not account for every home. Insulation, air leakage, window area, ceiling height, layout, and climate all affect the required capacity. An undersized system may struggle during cold snaps; an oversized one may not manage comfort as smoothly in milder weather.
I would ask an installer for a room-by-room or building load calculation before choosing between 12,000 and 18,000 BTU. The Goodman’s 2.5-ton capacity is a different scale and installation format, so it should not be treated as a direct replacement for a single-room mini-split without a full system design.
Compare efficiency ratings in context
The mini-splits list 23 to 25 SEER2, with HSPF2 figures supplied for both DELLA models and a 24 SEER2 rating for Cooper & Hunter. Goodman lists 13.4 SEER. These figures are not a complete forecast of utility use, and rating labels or equipment categories may differ. Use the ratings to compare systems in their proper category, then ask for expected performance based on your climate and usage.
For heating-focused comparisons, look for a seasonal heating rating and capacity at low outdoor temperatures, not just cooling efficiency. The 12,000 BTU DELLA gives the most complete seasonal rating information here with 25 SEER2 and 10.5 HSPF2. That does not automatically make it the right choice if the Cooper & Hunter’s noise figure or a building’s load points elsewhere.
Match system type to the building
Cooper & Hunter and both DELLA models are ductless single-zone mini-splits with wall-mounted indoor units. They can suit a room, addition, or zone without extending central ductwork, but one indoor unit does not automatically heat every closed room in a home. Consider placement, air circulation, condensate drainage, line-set routing, and outdoor-unit location before ordering.
Goodman’s packaged unit belongs in a project planned around packaged equipment and whole-house or light-commercial service. Its installation needs and capacity differ from a wall-mounted mini-split. I would compare it with other packaged systems and rely on an installer to confirm what the home’s existing distribution system requires.
Plan the electrical and refrigerant-line work
All three mini-splits list 230V power. The DELLA product information also calls for a 20A fuse and vacuuming during installation. A pre-flared line set and drain hose can simplify parts planning, but they do not replace correct evacuation, leak checks, commissioning, or local code compliance. Cooper & Hunter specifically requires professional installation, and a qualified technician should handle refrigerant-system work for the other units as well.
Have an electrician or installer confirm circuit capacity, breaker and disconnect requirements, wire sizing, and the route from indoor to outdoor equipment. For Goodman, verify the 208/230V electrical setup and any building-specific distribution needs. Confirm delivery access too: Cooper & Hunter’s freight may be delivered to the nearest accessible point outside the home.
Weigh controls, sound, and everyday usability
Connected features may help when setting schedules or adjusting a system remotely. The Cooper & Hunter includes a Wi-Fi Smart Kit, while both DELLA mini-splits list app and Alexa controls. If voice integration matters, the DELLA units have the more explicit compatibility information in this lineup. If you are comparing sound, note that Cooper & Hunter lists 22.5 dB while DELLA gives mute-mode figures of 30 dB and 34 dB. Different operating modes can make those numbers unsuitable for a simple direct ranking.
Check how the system behaves at the fan speed or heating output you expect to use, not only the quietest advertised setting. Airflow direction, indoor-unit placement, remote usability, and how easily filters can be reached may matter more to daily comfort than a small rating difference.
Treat warranty terms as part of installation planning
Goodman lists a 10-year limited parts warranty when installed by a qualified professional. The information supplied here does not give complete warranty terms for the other models, so I would not infer that they match Goodman’s coverage. Before choosing, check registration deadlines, labor coverage, required installer qualifications, parts availability, and what the manufacturer requires to keep coverage in force.
A clear warranty is useful only alongside a sound installation and a system suited to the building. Ask the installer to document commissioning and keep the model and serial details, maintenance records, and warranty registration information.
Frequently Asked Questions
Which of these heat pumps has the lowest stated heating operating temperature?
The Cooper & Hunter Hyper Heat and the 12,000 BTU DELLA are both specified to operate in heating mode down to -22°F. The DELLA Optima is listed down to -13°F, and the supplied Goodman details do not state a minimum outdoor heating temperature. These figures describe stated operating limits; they do not show how much heat each unit can deliver at those temperatures. I would ask an installer to check low-temperature capacity data against your local winter design conditions.
Is the DELLA 18,000 BTU model better for a cold climate than the 12,000 BTU models?
Not automatically. The Optima provides more listed capacity and coverage, which may suit a larger zone, but its heating limit is specified as -13°F. Both 12,000 BTU alternatives list operation down to -22°F. The better fit depends on the building’s heat loss and local winter conditions; a professional load calculation and low-temperature output data are more useful than choosing by capacity alone.
Can I install one of the ductless mini-splits myself?
The supplied details call for professional installation for the Cooper & Hunter and describe vacuuming and a 20A fuse for the DELLA models. Included or pre-flared line sets do not remove the need to follow refrigerant handling procedures, check for leaks, evacuate and commission the system correctly, and meet electrical and local code requirements. I would have a qualified HVAC professional verify the full installation plan before purchase.
Does a stated coverage area guarantee that a mini-split will heat the room?
No. DELLA lists up to 550 square feet for its 12,000 BTU model and up to 1,000 square feet for the 18,000 BTU Optima, but actual heating needs depend on insulation, air leakage, ceiling height, windows, room shape, and outdoor temperatures. A coverage figure is a starting point, not a substitute for sizing. Ask an installer to calculate the heating load and confirm capacity at cold outdoor temperatures.
Is the Goodman packaged heat pump comparable to the wall-mounted mini-splits?
Only at a broad level: all are heat pumps that provide heating and cooling, but they are built for different installation plans. Goodman is a 2.5-ton packaged system intended for whole-house or light-commercial applications, while the other three are ductless single-zone mini-splits. The Goodman listing also does not provide a low-temperature operating limit here, so I would compare it with other packaged systems and request its detailed cold-weather capacity information before treating it as a cold-climate choice.
Conclusion
For a single zone in a cold location, I would start with the Cooper & Hunter Hyper Heat: it pairs a stated -22°F operating limit with 24 SEER2 and the lowest listed noise figure, although professional installation and freight handling need planning. If you want Alexa control and the highest listed mini-split efficiency rating, the 12,000 BTU DELLA is the better fit, provided its capacity suits the room and the electrical work is covered. For a larger zone in a climate compatible with -13°F operation, the DELLA Optima offers more capacity but gives up some low-temperature range.
I would choose Goodman only for a packaged-system project where its format and capacity fit the building and an installer confirms low-temperature performance; the supplied listing does not establish a minimum heating temperature. Before committing to any of these, have a qualified professional check the heat load, electrical service, equipment clearances, and heating output at local winter conditions. Those checks are what turn a promising specification into a suitable system for your home.
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