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KINGHOME POLARIS R32 and KINGHOME AIRY R32: what changes from one series to the next
Two KINGHOME wall-mounted series sold by AirGreen, at 12,000 BTU on R‑32, ENERGY STAR cold climate certified. Same HSPF2, same test points down to −30 °C. Depending on the measurement, the certificates tip one way or the other.
What the 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 exactly the same way, with the same method as on all our comparison pages; only their certified efficiencies change. Electric baseboards serve as a reference point.
How this amount is calculated
- Heat needed over the winter. A zone whose heat loss reaches 12,000 BTU/h ( kW) at −23.1 °C, the Montréal design temperature: kW × 24 h × 4,167 degree-days ÷ (18 − (−23.1)) = kWh of heat for round-the-clock heating, 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 and for the baseboards alike: this is a simplification that ignores the recovery after a temperature setback.
- Electricity for heating. Heat pump: heat × 3.412 ÷ HSPF2 Region V, 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 a day × 60 days ÷ 1,000: the method of Hydro-Québec’s air-conditioning calculator, with the SEER2 seasonal 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: that is a maximum, since a variable-speed unit slows down once the room is at the right temperature.
- Price. Hydro-Québec Rate D in effect on April 1, 2026: 7.065¢ per kWh up to 40 kWh a day, 11.142¢ beyond that; the average price, 9.104¢, is the one Hydro-Québec’s calculators use. GST and QST included. Network access charges, the same with or without a heat pump, are not counted.
AirGreen method v1.1, November 9, 2026. An estimate is meant to compare units under the same conditions. The actual bill depends on the house, insulation, settings and use; this amount is not a promise.
Two KINGHOME units, two certified priorities
Each certified measurement tips the balance toward the higher value, then it settles. On some measurements, it stays level. The balance never adds anything up: it shows, measurement by measurement, where each series stands.
POLARIS R32
AIRY R32AHRI certified values published by NEEP (records 426104 and 427149), accessed November 9, 2026. The tilt follows the relative gap between the two values, capped to stay readable; it does not weigh the measurements against each other.
Below −15 °C: the order reverses between −15 and −30 °C
NEEP certifies both units at −15 °C and at −30 °C. At −15 °C, the POLARIS R32 has the higher maximum capacity; at −30 °C, it is the AIRY R32. In between, no point is certified: the table gives the published range and, for the AIRY R32, the curve from a GREE document for the same NEEP series.
What each KINGHOME spec sheet names
KINGHOME POLARIS R32 and AIRY R32 spec sheets, manufacturer technical documentation distributed by AirGreen. Each card repeats what the sheet writes for the series.
POLARIS R32: Wi-Fi and app control.
AIRY R32: Wi-Fi and app control.
POLARIS R32: “humidity control”; 1.4 L/h.
AIRY R32: “humidity control”; 1.4 L/h.
POLARIS R32: “3D airflow”.
AIRY R32: “3D airflow”; “long-range airflow”.
POLARIS R32: self-cleaning, which “helps detect potential mechanical problems quickly”.
AIRY R32: “smart cleaning”, with fault detection.
POLARIS R32: “G-AI” inverter control.
AIRY R32: “G-Storm” compressor, up to 200 Hz; “AI 2.0”.
POLARIS R32: Turbo mode, maximum fan to heat or cool quickly.
AIRY R32: the sheet names no particular mode.
The sheets also state energy-saving percentages tied to their controls; this page does not repeat them, since no method is published.
How loud each one is, according to KINGHOME
The KINGHOME sheets give a sound pressure range for the indoor unit, without listing the speeds: 27 to 47 dB(A) for the POLARIS R32, 19 to 43 dB(A) for the AIRY R32. Outside, 55 dB(A) for both.
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 range runs from the slowest speed to the fastest.
Why this is not a ranking. The sheets publish neither the distance nor the measuring conditions, nor the airflow at each speed.
Indoor unit, in the room
Slowest and fastest speed
Outdoor unit, outside
Published value
Measurements published by KINGHOME for each series, with no conditions stated: read them as reference points, not as a ranking.
On the wall, outside, in the piping
Indoor units to scale
Widths per the KINGHOME sheets. The AIRY R32 is wider and heavier indoors (33.1 lb versus 20.9 lb). Outside, both sheets give the same dimensions, 34 3/8 × 21 27/32 × 14 51/64 in.
| Installation | POLARIS R32 | AIRY R32 |
|---|---|---|
| Maximum piping length | 131 ftMinimum 10 ft. | 131.2 ftGREE document for the same NEEP series (EXTRÊME R32 brochure); the table on the KINGHOME sheet is not legible for this model. |
| Precharged length | 25 ftAdd 0.2 oz/ft beyond that. | 24.6 ftGREE document for the same NEEP series (GREE AIRY R32 brochure). |
| Maximum height difference | Not published by the manufacturer. | 82 ftGREE document for the same NEEP series; the GREE service manual gives 32.8 ft. |
| Liquid – gas diameters | 1/4 – 1/2 in | 1/4 – 1/2 in |
| Outdoor unit W × H × D, weight | 34 3/8 × 21 27/32 × 14 51/64 in, 81.6 lb | 34 3/8 × 21 27/32 × 14 51/64 in, 78.3 lb |
| Indoor unit, weight | 20.9 lb | 33.1 lb |
| Electrical protectionPer the manufacturer | MOCP 15 A (MCA 13 A) | MOCP 15 A (MCA 10 A) |
| Dehumidification | 1.4 L/h | 1.4 L/h |
| Stated heating / cooling range | −30 to 30 °C / −29 to 50 °C | −30 to 30 °C / −29 to 50 °C |
KINGHOME POLARIS R32 and AIRY R32 spec sheets (manufacturer technical documentation distributed by AirGreen, undated). When an AIRY R32 value comes from a GREE document, the row says so. The installer confirms lengths and clearances on site.
What people ask about these two KINGHOME units
Which one delivers more heat in extreme cold?
It depends on the temperature. According to NEEP, at −15 °C: 13,700 BTU/h maximum for the POLARIS R32, 12,200 for the AIRY R32. At −30 °C: 7,300 and 8,500 BTU/h. Both points are measured at the same temperatures for both units.
Why is the winter cost the same?
Both certificates give the same HSPF2: 10.0 in Region IV and 8.0 in Region V. This page’s calculation uses Region V; the cost gap therefore comes from summer, with SEER2 values of 25.5 and 29.5.
Are the KINGHOME AIRY R32 and the GREE EXTRÊME R32 the same thing?
At 12,000 BTU, NEEP lists the same certified values for the KINGHOME AIRY R32, the GREE EXTRÊME R32, the GREE AIRY R32 and the GREE SAPPHIRE R32 (“Airy” series). The name changes; the indoor unit, the remote and the warranty can change with it.
Where does the POLARIS R32 come from?
NEEP lists the 12,000 BTU POLARIS R32 under the “Glovia” series. The GREE Glovia GWH12BDCXE carries the same NEEP certified values.
Which one is quieter?
The KINGHOME sheets give 27 to 47 dB(A) for the POLARIS R32 and 19 to 43 dB(A) for the AIRY R32, with no measuring conditions and no airflow per speed. These figures place each unit; they do not allow a ranking.
Are they eligible for rebates?
Eligibility depends on the official list in force on the date of purchase. This page promises no amount; the current list is checked when you get your quote.
All AHRI and NEEP values
| Certified value | POLARIS R32 | AIRY R32 |
|---|---|---|
| Cooling | ||
| Rated capacity at 35 °C | 12,000 BTU/h | 12,000 BTU/h |
| SEER2 | 25.5 | 29.5 |
| EER2 | 14.5 | 15.2 |
| Heating, same conditions | ||
| HSPF2 Region IV / V | 10.0 / 8.0 | 10.0 / 8.0 |
| 8.3 °C: min. / rated / max.BTU/h | 3,070 / 12,000 / 17,060 | 3,270 / 12,200 / 16,200 |
| 8.3 °C: COP at min., rated, max. | 5.62 / 4.19 / 3.29 | 5.04 / 4.53 / 3.77 |
| −8.3 °C: min. / rated / max.BTU/h | 2,700 / 15,000 / 15,000 | 2,800 / 13,000 / 13,000 |
| −8.3 °C: COP at min., rated, max. | 3.04 / 2.14 / 2.00 | 4.32 / 2.06 / 2.06 |
| −15 °C: min. / rated / max.BTU/h | 2,600 / 13,700 / 13,700 | 2,600 / 12,200 / 12,200 |
| −15 °C: COP at min., rated, max. | 3.17 / 1.80 / 1.80 | 4.23 / 2.00 / 2.00 |
| Coldest point — the same temperature for both, not highlighted | ||
| Test temperature | −30 °C (−22 °F) | −30 °C (−22 °F) |
| Capacity min. / max. | 2,000 / 7,300 BTU/h | 2,600 / 8,500 BTU/h |
| COP at maximum output | 1.51 | 1.75 |
| Certifications and refrigerant | ||
| ENERGY STAR / cold climate | Yes / Yes | Yes / YesENERGY STAR directory, May 28, 2026; NEEP shows “no” for ENERGY STAR. |
| ENERGY STAR directory, markets listed | United States, Canada | United States, Canada |
| AHRI certificate · NEEP record | 218451122 · 426104 | 217903558 · 427149 |
| RefrigerantGWP per the IPCC (AR4); ASHRAE 34 class | R-32 · GWP 675 · A2L | R-32 · GWP 675 · A2L |
higher marks the higher value of the same measurement, under the same conditions. It is not a recommendation. Capacities and COPs by test point are not highlighted: the order changes with the point you read.
Both are on the AirGreen website.
To choose for your room, talk it over with our team: bring the room dimensions, the planned outdoor location and your current heating.
Where each figure comes from
Data checked November 9, 2026. Performance: AHRI certificates and the NEEP database. Dimensions, sound, piping and features: per the manufacturer. When a source contradicts the AHRI certificate, the certificate prevails.
Trademarks. KINGHOME, POLARIS, AIRY, GREE, EXTRÊME, SAPPHIRE and GLOVIA are trademarks of their respective owners. Logos are used only to identify the products compared. AirGreen is a retailer of these brands; this page is not produced, sponsored or endorsed by the manufacturers.
Photos: AirGreen and manufacturers, for identification.
Does a figure look wrong? Write to us: every reported figure is rechecked.