Home / Comparisons / 12,000 BTU wall heat pumps
GREE CLIVIA R32 and MIDEA28, figure by figure
Two 12,000 BTU wall units, ENERGY STAR cold climate certified and offered by AirGreen, one using R-32, the other R-454B. Each heads a family: its certified values appear under other names. This page sets side by side what the AHRI certificates and the two manufacturers publish, from 8.3 °C to −30 °C.
GREECLIVIA R32 12,000 BTU
GWH12AUCXD-D6DN***/I / GWH12AGCXD-D6DNA4D/O · AHRI 216032436
See the product pageClose relatives: GREE CROSSOVER R32, GREE VIREO R32, GREE ENVO R32 and KINGHOME CLIVIA R32: same certified SEER2, EER2 and HSPF2, with small differences at other points.
MIDEAMIDEA28 12,000 BTU
MSEHU-H12B-2A / MO1HS-H12B-2A · AHRI 215471381
See the product pageSame NEEP certified values as: SENVILLE AURA R454B, DIRECT AIR HEAT XTREME PRO R-454B and BOSCH Climate 5000 MAX PERFORMANCE R-454B.
What electricity costs, in dollars, winter and summer
AirGreen estimate for the same 12,000 BTU/h zone in Montréal, at Hydro-Québec Rate D, taxes included. Both heat pumps are calculated in exactly the same way, with the same method as on all our comparison pages; only their certified efficiencies change. Electric baseboards serve as the reference.
How this amount is calculated
- Heat to supply over the winter. A zone whose heat loss reaches 12,000 BTU/h ( kW) at −23.1 °C, Montréal’s design temperature: kW × 24 h × 4,167 degree-days ÷ (18 − (−23.1)) = kWh of heat for heating around the clock, all winter. Heating degree-days (base 18 °C) and design temperature: Natural Resources Canada, HOT2000 climate data, Montréal Intl station. With fewer hours a day (“Heating” slider), the heat is reduced in the same proportion, for the heat pump as for the baseboards: this simplification does not account for the recovery after a temperature setback.
- Electricity for heating. Heat pump: heat × 3.412 ÷ Region V HSPF2, the AHRI certificate value published by NEEP. Region V is the coldest in the standard, and its calculation includes the electric backup expected when the heat pump is no longer enough. Electric baseboards: 1 kWh of electricity for 1 kWh of heat.
- Electricity for cooling. 12,000 BTU/h ÷ SEER2 × hours per day × 60 days ÷ 1,000: the method of Hydro-Québec’s air-conditioning calculator, with the seasonal SEER2 efficiency from the AHRI certificate. The number of hours is a scenario, adjustable above from 1 to 24 h. At 24 h, the calculation assumes rated capacity all day long: this is a maximum, since a variable-speed unit slows down once the room reaches the right temperature.
- Price. Hydro-Québec Rate D in force on April 1, 2026: 7.065¢ per kWh up to 40 kWh a day, 11.142¢ beyond; the average price, 9.104¢, is the one Hydro-Québec’s calculators use. GST and QST included. The system access charge, the same with or without a heat pump, is not counted.
AirGreen method v1.1, November 9, 2026. An estimate is used to compare units under the same conditions. The actual bill depends on the house, the insulation, the settings and the use; this amount is not a promise.
Two widespread platforms, under several names
The certified values of the CLIVIA R32 and the MIDEA28 appear on other 12,000 BTU wall units offered by AirGreen. Pick a value: each card shows what its AHRI certificate says, and differences stand out in yellow. The indoor unit, remote control, app and warranty can vary from one name to the next.
Sources: NEEP records for each certificate, consulted November 9, 2026 (numbers under “Sources”). In the MIDEA28 family, the four records carry different NEEP series names and identical certified values. In the CLIVIA family, NEEP lists the CROSSOVER R32 under the “Pular” series and the others under “Clivia”; the CLIVIA R32 and the CROSSOVER R32 share the same outdoor unit, GWH12AGCXD-D6DNA4D/O.
More heat from the MIDEA28 down to −15 °C; the order reverses at −30 °C
Four temperatures certified by NEEP, the same for both. At full capacity, the MIDEA28 delivers more BTU/h down to −15 °C; at −30 °C, the CLIVIA R32 does. On COP, the CLIVIA R32 is higher at all four points. Nothing is published between −15 and −30 °C: the exact point where the order changes is not known.
Below −15 °C: 11,000 versus 11,500 BTU/h, then 7,300 versus 5,900
NEEP certifies both units at −15 °C and at −30 °C, at the same temperatures: these two rows compare directly. In between, neither manufacturer publishes a value; the table then gives the range between the two published points on either side of the temperature, for each unit.
What GREE and MIDEA write in their brochures
GREE Canada CLIVIA R32 brochure (document no. 062025), the English GREE CLIVIA R32 brochure and the MIDEA Canada wall-mounted systems brochure (2025-08-20), whose feature table covers the MIDEA35, 28 and 25 series together. Each line repeats what the manufacturer writes.
CLIVIA R32: Built-in Wi-Fi; wireless remote with LCD screen; optional wired thermostat.
MIDEA28: Wi-Fi and SmartHome app, optional voice control; optional 7-day programmable wired control; optional 24 V interface; dry contact.
CLIVIA R32: several fan speeds (eight published airflows); oscillating louver control; optional fresh-air kit (English brochure).
MIDEA28: fan speed adjustable from 1 to 100%; horizontal and vertical swing; “Follow Me”.
CLIVIA R32: 1.4 L/h; humidity control through the artificial intelligence function.
MIDEA28: humidity sensor, dual control of temperature and humidity.
CLIVIA R32: indoor unit self-cleaning; self-diagnosis; blue fins tested 500 hours in salt spray.
MIDEA28: automatic cleaning; removable blower wheel for deep cleaning.
CLIVIA R32: refrigerant leak detector included.
MIDEA28: A2L leak detection sensor and A2L dispersion system.
CLIVIA R32: artificial intelligence control that adapts to the living space; automatic voltage adaptation.
MIDEA28: ECO and “Gear”, Turbo, sleep mode, silent mode, 8 °C heating, smart presence sensor.
The GREE Canada brochure also names the compressor “G20 Inverter”; the MIDEA brochure does not name its compressor for the MIDEA28. A feature missing from a brochure is not necessarily missing from the unit: the document simply does not mention it.
Eight levels from GREE, five speeds from MIDEA
GREE Canada publishes eight sound pressure levels for the CLIVIA R32 indoor unit, with no speed names. MIDEA publishes five for the MIDEA28, from “Silent” to “Turbo”, without stating whether they are sound pressure or sound power.
How to read these figures. dB(A) measures a noise level as the ear perceives it: the lower the figure, the quieter the unit. Each dot is a fan speed published by the manufacturer, from the slowest to the fastest.
Why this is not a ranking. Neither GREE nor MIDEA publishes the measurement distance or conditions, and MIDEA does not say whether its figure is sound pressure or sound power: different method — not comparable. A gap of a few dB(A) can come from the method as much as from the unit.
Indoor unit, in the room
All published speeds
Outdoor unit, outside
Published value
Measurements taken by each manufacturer using its own method: read them separately, not as a ranking.
Sources: GREE Canada CLIVIA R32 brochure, document no. 062025 (“sound pressure level”); MIDEA Canada brochure of 2025-08-20 (“sound level”). The undated English GREE CLIVIA R32 brochure prints other values for the same indoor unit: 48, 44 and 40 dB(A) at three speeds, and 62 dB(A) outdoors. This page follows the dated document.
On the wall, in the piping, on the ground
Is your wall wide enough?
Published widths: 32 61/64 in (GREE Canada, 062025) and 31.30 in (MIDEA, 2025-08-20). The side clearances required by each installation manual come on top; the installer confirms them on site.
Piping length
According to GREE (English CLIVIA R32 brochure) and MIDEA (brochure of 2025-08-20): 24.6 ft precharged for both; beyond that, 0.2 oz/ft (CLIVIA R32) and 0.16 oz/ft (MIDEA28) of refrigerant to add, up to 65.6 and 82 ft.
Units to scale
Same scale for all four photos: the width published by each manufacturer. The outdoor units have almost the same footprint; the CLIVIA R32 is slightly deeper (13 25/32 versus 12.99 in), the MIDEA28 slightly deeper indoors (8.86 versus 7 7/8 in).
| Installation | CLIVIA R32 | MIDEA28 |
|---|---|---|
| Maximum piping length | 65.6 ft | 82 ft |
| Precharged length | 24.6 ftGREE CLIVIA R32 brochure (English); the GREE Canada brochure does not give it. | 24.6 ft |
| Additional charge beyond the precharged length | 0.2 oz/ft | 0.16 oz/ft |
| Maximum height difference | 39.4 ftGREE Canada; the English brochure states 40 ft. | 49.2 ft |
| Liquid – gas diameters | 1/4 – 1/2 in | 1/4 – 3/8 in |
| Outdoor unit W × H × D, weight | 31 37/64 × 21 27/32 × 13 25/32 in, 67.3 lb | 31.69 × 21.81 × 12.99 in, 72.75 lb |
| Indoor unit W × H × D, weight | 32 61/64 × 11 17/32 × 7 7/8 in, 20.9 lb | 31.30 × 11.61 × 8.86 in, 22.93 lb |
| Electrical protectionAccording to the manufacturer | MOP 15 A (MCA 10 A) | Max. fuse 15 A (MCA 15 A) |
| Dehumidification | 1.4 L/h | Not published by the manufacturer. |
| Refrigerant and factory charge | R-32, 28.2 oz | R-454B, 35.27 oz |
| Stated heating / cooling range | −30 to 30 °C / −29 to 50 °C | −30 to 24 °C / −30 to 50 °C |
Outdoor unit clearances: GREE gives them in the user manual for its R32 outdoor units (X40270A_2, figure p. 8, common to the Airy, Charmo and Clivia series), MIDEA in the service manual for its single-zone outdoor units (figures SC-1 and SC-2, common to all capacities). Both show their values in a figure rather than in a table listing each side; the installer measures them on site.
What people ask us about the CLIVIA R32 and the MIDEA28
Does winter really cost the same with both?
In our estimate, yes: it uses the Region V HSPF2, and both AHRI certificates give 8.0. In Region IV, which is less cold, the values are 9.5 (CLIVIA R32) and 10.5 (MIDEA28). The estimate is not a bill: the house, its insulation and the settings matter more.
Which one heats more in extreme cold?
At −15 °C, NEEP certifies a maximum of 11,000 BTU/h for the CLIVIA R32 and 11,500 for the MIDEA28. At −30 °C, 7,300 and 5,900 BTU/h. Both are measured at the same temperatures, so they can be read side by side; between −15 and −30 °C, no figure is published.
CLIVIA, CROSSOVER, VIREO, ENVO: what is the difference?
These GREE wall units and the KINGHOME CLIVIA R32 share the same SEER2, EER2 and HSPF2 and the same certified points at −15 and −30 °C. They differ on a few values at −8.3 °C and 8.3 °C (see “Two families”), and in their indoor unit, features and documents.
SENVILLE AURA, DIRECT AIR, BOSCH MAX: is it the MIDEA28?
At 12,000 BTU, their NEEP records carry exactly the same certified values as the MIDEA28, under different series names. That says nothing about the indoor unit, the remote control, the app or the warranty, which must be checked for each name.
R-32 or R-454B: what does it change for me?
Both are class A2L refrigerants under ASHRAE 34. Their global warming potential (GWP, IPCC AR4) is 675 for R-32 and 466 for R-454B. Both brochures mention a leak detector; installation follows the requirements specific to each refrigerant.
Which one is quieter?
GREE Canada publishes 20 to 43 dB(A) of sound pressure for the CLIVIA R32; MIDEA publishes 19.5 to 47 dB(A) for the MIDEA28, without stating the method. These figures place each unit; they do not rank them.
Are they eligible for grants?
Eligibility depends on the official list in force on the date of purchase. This page promises no amount; the current list is checked at the time of the quote.
Both AHRI certificates, line by line
| Certified value | CLIVIA R32 | MIDEA28 |
|---|---|---|
| Cooling | ||
| Rated capacity at 35 °C | 12,000 BTU/h | 12,000 BTU/h |
| SEER2 | 24.5 | 25.4 |
| EER2 | 13.0 | 13.4 |
| Heating, same conditions | ||
| HSPF2 Region IV | 9.5 | 10.5 |
| HSPF2 Region V | 8.0 | 8.0 |
| 8.3 °C: min. / rated / max.BTU/h | 3,070 / 12,000 / 14,600 | 3,800 / 12,000 / 16,000 |
| 8.3 °C: COP min. / rated / max. | 5.62 / 3.78 / 3.72 | 4.84 / 3.74 / 3.35 |
| −8.3 °C: min. / rated / max.BTU/h | 2,700 / 12,000 / 12,000 | 5,300 / 12,000 / 12,800 |
| −8.3 °C: COP min. / rated / max. | 3.04 / 2.11 / 2.06 | 2.22 / 2.51 / 1.75 |
| −15 °C: min. / rated / max.BTU/h | 2,600 / 11,000 / 11,000 | 4,100 / 11,500 / 11,500 |
| −15 °C: COP min. / rated / max. | 3.17 / 1.95 / 1.95 | 1.72 / 1.80 / 1.80 |
| −30 °C (−22 °F): same temperature for both | ||
| −30 °C: capacity min. / max.BTU/h | 2,000 / 7,300 | 2,000 / 5,900 |
| −30 °C: COP min. / max. | 2.79 / 1.51 | 1.17 / 1.25 |
| Listings and refrigerant | ||
| ENERGY STAR / cold climate (NEEP) | Yes / Yes | Yes / Yes |
| ENERGY STAR directory, markets listed | United States | United States, Canada |
| AHRI certificate · NEEP record | 216032436 · 383739 | 215471381 · 387358 |
| RefrigerantGWP according to the IPCC (AR4); ASHRAE 34 class | R-32 · GWP 675 · A2L | R-454B · GWP 466 · A2L |
higher marks the higher value of the same measure, under the same conditions. It is not a recommendation. Capacities and COPs by point are not highlighted: the order changes depending on the point read.
The CLIVIA R32 and the MIDEA28 are both on the AirGreen website.
To choose between the CLIVIA R32 and the MIDEA28, talk to our team: bring the room dimensions, the planned outdoor location and your current heating.
Where the CLIVIA R32 and MIDEA28 figures come from
Data verified November 9, 2026. Performance: AHRI certificates and the NEEP database. Dimensions, sound, piping and features: according to the manufacturer. When a source contradicts the AHRI certificate, the certificate prevails; when two documents from the same manufacturer differ, this page follows the dated document and flags the other.
Trademarks. GREE, CLIVIA, CROSSOVER, VIREO, ENVO, KINGHOME, MIDEA, MIDEA28, SENVILLE, AURA, DIRECT AIR, HEAT XTREME PRO and BOSCH are trademarks of their respective owners. Logos are used only to identify the products compared. AirGreen is a dealer for these brands; this page is not produced, sponsored or endorsed by the manufacturers.
Photos: AirGreen and manufacturers, for identification.
Does a figure look wrong to you? Write to us: every reported figure is checked again.
