CANAIR · SERIES 4C22 · R-454BSeries 4C22 at AirGreen5 4C22 wall units, from 9,000 to 18,000 BTU/h, sold and installed by AirGreen in Montreal, Laval, Longueuil, the South Shore and the North Shore.
CanAir · 4C22 wall unit · R-454B · updated October 8, 2026
CanAir 4C22 wall unit: the C22 in R-454B refrigerant
The 4C22 takes over the C22’s role with R-454B refrigerant: cooling, backup heat and the shoulder seasons, heating down to -15°C. Five models, from 9,000 to 18,000 BTU/h, two of them 115 V, and optional Wi-Fi control.
AirGreen × CANAIRSeries 4C22R-454B9,000 to 18,000 BTU/hHeating down to -15°COptional Wi-FiSold and installed by AirGreenMontreal · Laval · Longueuil · South Shore · North Shore
AirGreen × CANAIRSeries 4C22R-454B9,000 to 18,000 BTU/hHeating down to -15°COptional Wi-FiSold and installed by AirGreenMontreal · Laval · Longueuil · South Shore · North Shore
SEER2, HSPF2 (region IV), heating ranges, sound levels and line lengths: CanAir brochure. LogisVert: Hydro-Québec’s list of October 8, 2026. AirGreen never changes an AHRI number.
02 · Variable output
The 4C22 12,000 modulates from 1,700 to 13,300 BTU/h in cooling.
A variable-speed heat pump adjusts its output to what the room needs. As long as the load stays above its minimum, it slows down instead of stopping and restarting. Tap a size to see its range, in cooling and heating, per the CanAir 4C22 brochure.
Cooling2,200 – 9,900 BTU/h
min. 2,200rated 9,000max. 9,900
Heating4,200 – 10,200 BTU/h
min. 4,200rated 10,000max. 10,200
4.5×between minimum and maximum in cooling
2.4×between minimum and maximum in heating
Cooling2,300 – 9,700 BTU/h
min. 2,300rated 9,000max. 9,700
Heating4,300 – 11,100 BTU/h
min. 4,300rated 10,000max. 11,100
4.2×between minimum and maximum in cooling
2.6×between minimum and maximum in heating
Cooling2,200 – 12,300 BTU/h
min. 2,200rated 12,000max. 12,300
Heating3,400 – 12,200 BTU/h
min. 3,400rated 12,000max. 12,200
5.6×between minimum and maximum in cooling
3.6×between minimum and maximum in heating
Cooling1,700 – 13,300 BTU/h
min. 1,700rated 12,000max. 13,300
Heating3,500 – 13,400 BTU/h
min. 3,500rated 12,000max. 13,400
7.8×between minimum and maximum in cooling
3.8×between minimum and maximum in heating
Cooling4,100 – 19,000 BTU/h
min. 4,100rated 18,000max. 19,000
Heating6,200 – 20,200 BTU/h
min. 6,200rated 18,800max. 20,200
4.6×between minimum and maximum in cooling
3.3×between minimum and maximum in heating
010,10020,200 BTU/h
Minimum, rated and maximum capacities: CanAir 4C22 brochure, p. 5. The rated capacity is the one on the label; the range shows how far the compressor goes down and up.
03 · The cold
At -15°C, the 4C22 18,000 still heats at 11,500 BTU/h.
Heating capacity at -15°C published by CanAir, size by size. Below -15°C, the 4C22 needs backup heat.
-20°C
4C22 all sizes · down to -15°C
Backup needed
C28 9,000 to 24,000 for comparison · down to -30°C
Within range
4C28 for comparison · down to -30°C
Within range
Heating capacity at -15°C
9,000 · 115 V6,500 BTU/h
9,000 · 230 V7,000 BTU/h
12,000 · 115 V6,600 BTU/h
12,000 · 230 V8,000 BTU/h
18,000 · 230 V11,500 BTU/h
Source: CanAir brochure, rated heating capacity at -15°C.
04 · Heat per kWh
At -15°C, the 4C22 18,000 gives 2.15 kWh of heat per kWh.
COP compares the heat delivered with the electricity used. An electric baseboard gives 1 kWh of heat per kWh: that is the baseline. Here is the COP of each 4C22 at -15°C, at rated capacity, per the CanAir brochure.
Electric baseboard1.00
4C22 9,000 · 115 V1.96
1 kWhof electricity
1.96 kWhof heat at -15°C
Heat delivered at -15°C6,500 BTU/hbrochure
Electric baseboard1.00
4C22 9,0002.07
1 kWhof electricity
2.07 kWhof heat at -15°C
Heat delivered at -15°C7,000 BTU/hbrochure
Electric baseboard1.00
4C22 12,000 · 115 V1.84
1 kWhof electricity
1.84 kWhof heat at -15°C
Heat delivered at -15°C6,600 BTU/hbrochure
Electric baseboard1.00
4C22 12,0001.91
1 kWhof electricity
1.91 kWhof heat at -15°C
Heat delivered at -15°C8,000 BTU/hbrochure
Electric baseboard1.00
4C22 18,0002.15
1 kWhof electricity
2.15 kWhof heat at -15°C
Heat delivered at -15°C11,500 BTU/hbrochure
COP at -15°C (5°F): CanAir 4C22 brochure, p. 5. The electric baseboard is the baseline: all the heat it gives comes from electricity.
05 · LogisVert, Hydro-Québec’s list
4C22: a LogisVert amount only with the “-P” indoor unit.
The 9,000 BTU/h units are below the 12,000 BTU/h minimum. The AHRI numbers on our 12,000 and 18,000 product pages are not on Hydro-Québec’s list of October 8, 2026; those of the “-P” version are. Here is the detail.
Size
AHRI
Why no amount
9,000 · 115 V
215449710
Under 12,000 BTU/h: LogisVert requires an outdoor unit of at least 12,000 BTU/h nominal cooling capacity.
The 4C28 of 12,000 BTU/h and up has a checked amount ($1,440 to $3,840) and heats down to -30°C.
The “-P” version
With the 4C22 “-P” indoor unit (e.g. 4C22SEH12H21-P), the 12,000 and 18,000 BTU/h 4C22 is on the October 8, 2026 list: $996 to $1,680. We confirm the version delivered in the quote.
The 4C22 “-P”: same outdoor unit, different indoor unit, a LogisVert amount.
ENERGY STAR lists 4C22 indoor units whose model ends in “-P”, certified on June 9, 2026. With them, three models in our range are on Hydro-Québec’s list in their “-P” version: the 12,000 at 115 V and 230 V, and the 18,000. Compare the current listing and the “-P” version, model by model.
The AHRI number on your invoice. It depends on the indoor unit delivered: we confirm the version with the distributor before giving you the quote.
The other “-P” units
4C22 9,000 “-P” units also exist, in cold climate (AHRI 218472386 and 218472388), but stay below LogisVert’s 12,000 BTU/h minimum. A 4C22 24,000 “-P” is also on the list ($2,496); it is not part of our range.
ENERGY STAR dataset w7cv-9xjt (Oct. 8, 2026): SEER2, HSPF2 and output at 17°F (-8°C) of the “-P” versions. Hydro-Québec LogisVert list of Oct. 8, 2026. *Current listing HSPF2: CanAir 4C22 brochure, p. 5 (Region IV).
07 · Sound
From 17.5 to 50.5 dB(A) indoors, depending on size and fan speed.
Pick a size, then a fan speed. The needle shows the indoor unit’s sound level published by CanAir; the outdoor unit is shown next to it.
25dB(A) · Low
Outdoor unit52.5 dB(A)
Outdoor unit53.5 dB(A)
Outdoor unit54 dB(A)
Outdoor unit54 dB(A)
Outdoor unit56 dB(A)
Rule of thumb: 10 dB(A) more is heard as roughly twice as loud. dB(A) is weighted to follow how the ear hears.
Indoor and outdoor sound levels: CanAir 4C22 brochure, p. 5. Lowest figure in the series: 17.5 dB(A) (12,000 · 115 V, silent speed).
08 · Line length
Up to 98.4 ft between the head and the outdoor unit.
Slide the line length and height difference: the tool compares your case with the limits published for each 4C22. Handy for a condo up high or a head upstairs.
Maximum length and height, 24.6 ft precharge: CanAir 4C22 brochure, p. 5. Past the precharge, the technician adds refrigerant per the manual. 82 ft, 49.2 ft and 24.6 ft are 25 m, 15 m and 7.5 m.
09 · Refrigerant
R-454B: a GWP of 466, versus 2,088 for R-410A.
The 4C22 uses R-454B, like the 4C28 and 4CDH, the other CanAir series whose name starts with a “4”. Its global warming potential (GWP) is about 4.5 times lower than the R-410A in the C22.
R-410AC22 · C282,088
R-454B4C22 · 4C28 · 4CDH466
÷4.5 lower GWP going from R-410A to R-454B
A2L class
R-454B is rated A2L: low toxicity, mildly flammable. The CanAir 4C22 brochure shows it (“A2L R-454B”, p. 5). It is installed following the rules for that class.
What changes for you
In daily use, nothing: the unit heats and cools the same way. The refrigerant matters mostly for the environment and for the technician who services it.
What GWP means
Global warming potential compares a gas with CO₂ over 100 years. A GWP of 466 means one kilo of R-454B equals 466 kilos of CO₂.
Figures from the CanAir brochures and ENERGY STAR. Scroll through.
Did you know · CanAir17.5 dB(A)
The lowest figure of our CanAir wall units
At silent speed, the 4C22 12,000 · 115 V drops to 17.5 dB(A): the lowest level published for a CanAir wall unit at AirGreen.
01/07Did you know · CanAir5
Five fan speeds
Turbo, high, medium, low and silent. The brochure publishes the sound of all five.
02/07Did you know · AirGreen25 m
Round numbers… in metres
82 ft, 49.2 ft and 24.6 ft: that is 25 m of line, a 15 m height difference and 7.5 m of precharge.
03/07Did you know · CanAirIV and V
Two HSPF2 figures
The 4C22 brochure gives HSPF2 for Region IV (8.7 to 9.6) and for colder Region V (6.7 to 7.5).
04/07Did you know · CanAir52.5 dB(A)
The quietest outdoor unit of our CanAir wall units
The 4C22 9,000 · 115 V, per the brochure.
05/07Did you know · AirGreenJune 9
The “-P” date
The 4C22 “-P” indoor units were ENERGY STAR certified on June 9, 2026, in cold climate.
06/07Did you know · CanAir9.6
The best HSPF2 in the series
The 4C22 18,000 (Region IV), which has the lowest SEER2 in the series (19.2).
07/07
13 · Glossary
Eight terms to read a 4C22 spec sheet.
Tap a card: the definition, then the series figure.
14 · CanAir warranty
Ten years on the compressor and parts.
The warranty comes from CanAir. The installation and the record of your dates are on us. Keep your maintenance proof: CanAir can ask for it.
10 years
on the compressor and parts, and 6 years on labour, for residential systems sold since October 5, 2026
1 yr2 yr3 yr4 yr5 yr6 yr7 yr8 yr9 yr10 yr
Compressor
10 years
Parts
10 years
Labour
6 years
CanAir base warranty 2026-10-05. Coverage starts at installation. Labour: limited warranty, based on the manufacturer’s table of allowed hours, for a residential installation in Quebec.
Extension
CanAir offers an optional 4-year labour extension, for the original buyer only. We cover it in the quote.
Transfer
The base warranty transfers with the house during the initial term only.
Maintenance
Have the recommended maintenance done and keep your invoices and reports: without proof, coverage can be limited.
15 · Our CanAir projects
CanAir wall units installed by AirGreen.
These articles show CanAir wall units; they don’t always name the series.
Down to -15°C per the CanAir brochure’s table (-15°C to 24°C for all five sizes). A call-out on the same page, however, limits that claim to the 9,000 at 230 V: we confirm your size’s limit with the distributor. Below that limit, another heat source is needed.
The 9,000 BTU/h units are below the 12,000 BTU/h minimum. The AHRI numbers on our 4C22 12,000 and 18,000 product pages are not on Hydro-Québec’s list of October 8, 2026; their “-P” versions are, from $996 to $1,680. We confirm the version delivered and its AHRI number in the quote.
CanAir does not say. The 4C22 and 4C28 use R-454B; the C22 uses R-410A.
A 4C22 whose indoor unit model ends in “-P”, with the same outdoor unit. It has its own AHRI number, ENERGY STAR cold climate certified on June 9, 2026. We confirm the version delivered in the quote.
Wi-Fi control is optional on the 4C22, per the CanAir brochure.
Yes, in 9,000 and 12,000 BTU/h. The 18,000 is 230 V.
For residential systems sold since October 5, 2026: 10 years on the compressor and parts, and 6 years of limited labour (residential installation in Quebec), per the CanAir base warranty.
Yes: a fifth, silent speed, from 17.5 to 21 dB(A) depending on size, per the brochure.
The 4C22 page, checked line by line on October 8, 2026.
What we checked for this page, and where. LogisVert amounts remain indicative: Hydro-Québec confirms them when you apply.
×
5 AHRI numbers checked against the LogisVert listHydro-Québec file of Oct. 8, 2026: 0 with an amount. Three “-P” versions checked as well.
5 AHRI numbers searched in ENERGY STAR2 certified, 1 of them cold climate (Oct. 8, 2026).
Every technical figureCanAir 4C22 R-454B brochure (June 2025), p. 5; “-P” versions: ENERGY STAR.
The warrantyCanAir base warranty 2026-10-05 and 4-year extended labour warranty.
5 product pagesEvery link on this page leads to the right airgreen.ca page.
AirGreen × CANAIRSeries 4C22R-454B9,000 to 18,000 BTU/hHeating down to -15°COptional Wi-FiSold and installed by AirGreenMontreal · Laval · Longueuil · South Shore · North Shore
AirGreen × CANAIRSeries 4C22R-454B9,000 to 18,000 BTU/hHeating down to -15°COptional Wi-FiSold and installed by AirGreenMontreal · Laval · Longueuil · South Shore · North Shore
AirGreen · Air conditioning & heating
Your 4C22, picked for your room and installed by AirGreen.
We come and see the room, choose the size with you, and give you a clear quote with the AHRI number and the estimated LogisVert amount.
