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10 GREE five-room systems, from 36,000 to 42,000 BTU/h, in 8 lines. Often a whole floor, sometimes the whole house. With five, most combinations exceed the outdoor unit: every room gives up part of its rating, and the smallest one starts with the least.
Pick your five sizes. The first column is GREE Canada’s table; the second is our estimate for the cold; the third says whether the Multi GEN2, Multi+ Ultra and Multi21+ accept the same combination.
Five lists, one per room. Each column with figures shows each room’s share and, at the bottom, what the five keep together against their nominal total.
In GREE Canada’s table, the 42,000 shares its capacity in proportion to unit size. So a 9,000 unit gets the same share in every combination with the same total. Each bar reads against 9,000 BTU/h, its size.
The six combinations of 5,000 and 7,000 units add up to 25,000 to 35,000 BTU/h: every room gets more than its size. The other 13 exceed the outdoor unit’s 42,000. All rooms then give up the same proportion, but a 9,000 unit starts lower: it is the one we check first against its room’s heat loss.
GREE publishes per-room heat only at rated conditions. For the cold, there is only the whole system’s maximum capacity, certified by NEEP for four of the lines on this page. The per-room average is our arithmetic.
| Line, 42,000 | At −15 °C, whole system | Per room, five rooms our arithmetic | At −30 °C, whole system | Per room, five rooms our arithmetic |
|---|---|---|---|---|
| Free Match M R32 | 37,800 | 7,560 | 28,400 | 5,680 |
| MULTI R32 | 37,800 | 7,560 | 28,400 | 5,680 |
| Free Match M Series | 32,400 | 6,480 | 24,500 | 4,900 |
| Multi GEN2 | 32,400 | 6,480 | 24,500 | 4,900 |
| Multi+ Ultra, Free Match Extreme | off NEEP as of Oct. 26, 2026 | — | — | — |
| Multi21+, Free Match (1st gen.) | no NEEP record | — | — | — |
NEEP, maximum capacities read Oct. 26, 2026 (AHRI 214931590, 215218917, 208786088 and 210278981), in BTU/h. “Per room”: the total divided by five; in your home, each room gets more or less depending on its unit’s size.
One card per line, computed from its five-room systems: coldest point catalogued by NEEP, maximum capacities, ENERGY STAR designation and LogisVert amount, then what GREE documents for five units.
GWHD(42)ND6MO
42,000 BTU/h · 1 system
ENERGY STAR cold climate for every system
LogisVert up to $5,340 indicative
The only size of the line offered here that takes five rooms, and the only 42,000 with a GREE Canada figure for every room: 19 combinations, with indoor units from 5,000 to 24,000.
MUL42HP230V1R32AO
42,000 BTU/h · 1 system
ENERGY STAR cold climate for every system
LogisVert up to $5,340 indicative
Its 42,000 submittal gives 8,400 BTU/h per room for five 9,000 units as for five 12,000s: the figures of GREE Canada’s table.
GWHD(42)ND3MO
42,000 BTU/h · 1 system
ENERGY STAR cold climate for every system
LogisVert up to $4,272 indicative
Five rooms on the 42,000, on R-410A. NEEP gives it 32,400 BTU/h at −15 °C for the whole system, 5,400 less than the Free Match M R32 of the same size.
MULTI42HP230V1EO
42,000 BTU/h · 1 system
ENERGY STAR, without the cold-climate designation
LogisVert up to $1,780 indicative
13 five-unit combinations in GREE Comfort’s catalog, without per-room heat. ENERGY STAR does not give it the cold-climate designation: $1,780 from LogisVert.
GWHD(42)ND3J/O
42,000 BTU/h · 1 system
No ENERGY STAR record found for these AHRI numbers
GREE Canada allows it 2 to 5 units on the 42,000, with no public combination table. Off NEEP and ENERGY STAR since October 2026: no LogisVert amount.
MULTIU42HP230V1DO
42,000 BTU/h · 1 system
No ENERGY STAR record found for these AHRI numbers
The same 13 five-unit combinations as the Multi GEN2 in GREE Comfort’s catalog. NEEP has not listed it since October 2026: no certified cold figures any more.
GWHD(36)ND3GO, GWHD(42)ND3EO
36,000 to 42,000 BTU/h · 2 systems
No ENERGY STAR record found for these AHRI numbers
Offered here at 36,000 and 42,000 for five rooms, with no public GREE document or NEEP record: nothing outside our product sheets confirms the room count.
MULTI36HP230V1CO, MULTI42HP230V1CO
36,000 to 42,000 BTU/h · 2 systems
No ENERGY STAR record found for these AHRI numbers
The only 36,000 that takes five rooms per GREE Comfort (“1 - 5”), with just two combinations: 9 + 9 + 9 + 9 + 9 and 9 + 9 + 9 + 9 + 12.
Eight of the ten systems on this page are 42,000s; of the two 36,000s, only the Multi21+ has a GREE document that allows five units. The other room counts: GREE multi-zone page.
GREE designs the 42,000 unit, its five indoor units and the table of their shares. AirGreen starts from the smallest room, checks that its share is enough, then routes the five line sets.
The result: five rooms where even the smallest still gets the heat calculated for it, on a GREE system installed by a GREE Elite dealer.
Each system’s AHRI number is on its product sheet. Each room’s share is in the tool at the top; what each line documents for five units, on the cards.
Three tools for five rooms, each one backed by a dated document. What remains is the share the smallest room needs: that we calculate at your home.
Enter the length to each of the five rooms. The tool applies GREE Canada’s limits for the 42,000 Free Match M R32, 100 m in total and 25 m to the farthest indoor unit, then counts the R-32 to add beyond the 50 m pre-charged.
Pick a line. The bars show what NEEP publishes for the whole 42,000 system; the five units share that total, and GREE does not say how in deep cold.
For Montréal’s National Building Code design temperature, see the GREE multi-zone page.
five-room systems on R-32: the 42,000 Free Match M R32 and MULTI R32. ENERGY STAR gives R-32 a global warming potential of 675.
five-room systems on R-410A, offered while stocks last; ENERGY STAR lists a global warming potential of 2,088 for it.
Counted on the five-room product sheets on this page; ENERGY STAR potentials (“refrigerant with GWP”) read Oct. 26, 2026.
For the 42,000 Free Match M R32, GREE Canada and the Wolseley network agree: 30 A of MCA, 45 A of maximum protection. The MULTI R32 brochure gives 29 A and 35 A; the M Series and Multi GEN2, 29 A and 45 A; the Multi21+, 24 A and 40 A (23 A and 35 A at 36,000). The Multi+ Ultra and Free Match Extreme ask the most: 38 A and 60 A.
GREE Canada 092026 and 062024 · X610068B · GREE ComfortOn average per room: 20 m on the Free Match M R32 and M Series (100 m in total), 65.6 ft on the MULTI R32 and Multi GEN2 (328 ft), 49.2 ft on the Multi+ Ultra and Multi21+ (246 ft). The Free Match Extreme prints 80 m “from ODU to last IDU”. These averages are our arithmetic, not GREE limits.
GREE Canada 092026 and 062024 · GREE Comfort25 m for the Free Match M R32 and M Series, 82 ft for the MULTI R32 and Multi GEN2, 49 ft for the Multi+ Ultra and Multi21+, 15 m for the Free Match Extreme. With five rooms spread over three floors, it is the limit we check first.
GREE Canada 092026 and 062024 · GREE Comfort63 dB(A) for the Free Match M R32, MULTI R32, M Series and Multi GEN2; 62 for the Multi+ Ultra and Free Match Extreme; 61 for the Multi21+, at 36,000 as at 42,000. None of these documents gives the measuring distance.
GREE Canada 092026 and 062024 · GREE ComfortHydro-Québec’s list dated Oct. 27, 2026; indicative amounts, which Hydro-Québec confirms when you apply. The other six systems have no amount: the Multi+ Ultra and Free Match Extreme left the list in October 2026, the Multi21+ and first-generation Free Match are not on it. The program is explained in detail on the GREE multi-zone page.
Free estimate at home. Montréal, Laval, Longueuil, South Shore and North Shore.
Capacities and amounts: indicative, to be confirmed in the quote. Tool calculations: AirGreen, from the published values above. Page updated Oct. 27, 2026; NEEP records, ENERGY STAR and the LogisVert list checked again that day.