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R-410A · while stocks last
GREE Free Match M Series · 2 rooms · Updated Oct. 27, 2026

GREE Free Match M Series heat pumps, 2 rooms. Five sizes take two rooms. The 18,000 stops there; the other four take more. What each one gives, side by side.

5 M Series two-room systems, from 18,000 to 42,000 BTU/h, on R-410A. Two bedrooms, or a basement room and an office. Every size takes two rooms; what changes is the heat in deep cold, the line set allowed, the weight on the bracket and how many rooms the outdoor unit would take in all.

Compare the five sizesThe 18,000 against R-32Book my free estimate
min. 2Dettson’s M Series sheet (X61019) puts it in writing: “minimum 2 zones”. Two rooms is the smallest system the line makes, and the 18,000 takes two, not one more.
16,400 BTU/hThe most NEEP certifies for the 18,000 at −8.3 °C; rated, 15,000. At the same temperature, its R-32 successor is certified at 17,600.
35.0 kgThe 18,000 is the lightest M Series outdoor unit, in an 822 × 550 × 352 mm cabinet. The 42,000 weighs 79.0 kg: it matters on a wall bracket or a balcony.
  • 5two-room systems on this page
  • 18,000–42,000BTU/h, rated
  • 5/5ENERGY STAR cold climate, checked size by size
  • R-410Asold while stocks last; successor: Free Match M R32
AirGreen × GREEGREE Elite dealerFree Match M Series, two roomsFive sizes, from 18,000 to 42,000 BTU/hThe 18,000: two units, not one moreMontréal, Laval, Longueuil, South Shore, North Shore
Two rooms, five sizes

Five sizes for two rooms: what each one gives, what it allows.

All of them take two indoor units. Read the table row by row: certified heat and the LogisVert amount first, then line sets, cabinet and sound. The first row matters too: how many rooms each outdoor unit would take in all.

M Series18,00024,00030,00036,00042,000
Indoor units allowed22 to 32 to 42 to 42 to 5
Rated at −8.3 °C (NEEP)15,00023,60027,20030,80035,600
Maximum at −15 °C (NEEP)13,60021,60022,80032,40032,400
Maximum at −30 °C (NEEP)10,20017,22020,02024,02024,500
LogisVert, list of Oct. 27, 2026$1,800$2,832$3,264$3,696$4,272
Maximum length · total20 m · 40 m20 m · 60 m25 m · 80 m25 m · 80 m25 m · 100 m
Height difference15 m15 m25 m25 m25 m
Factory pre-charged (Dettson)10 m30 m40 m40 m40 m
Cabinet, mm822 × 550 × 352964 × 660 × 4021020 × 826 × 4271020 × 826 × 4271020 × 826 × 427
Net weight35.0 kg52.0 kg69.0 kg78.0 kg79.0 kg
Sound, outdoor unit54 dB(A)58 dB(A)63 dB(A)63 dB(A)63 dB(A)
Heat for each roomnot publishednot publishednot publishednot publishednot published

M Series: GREE Canada, document 062024; pre-charged length: Dettson, document X61019_C. NEEP read Oct. 26, 2026 and LogisVert list dated Oct. 27, 2026, non-ducted configurations (AHRI 208786089, 208786090, 208786091, 208786087 and 208786088). “Maximum length”: the limit for each line set, as GREE Canada names it for its R-32 line (“to farthest indoor unit”).

Heat for each room: not published

For the M Series, GREE Canada keeps its combination tables for dealers, behind an access code: no public document says what each of the two units gets. This page does not make it up; each room’s share is checked in the quote, from its heat loss.

The 18,000 and its successor

The R-410A 18,000 against the 18,000 Free Match M R32.

The Free Match M R32 takes over from the M Series. We compare only what NEEP, ENERGY STAR and Hydro-Québec publish for each of the two AHRI numbers.

Certified forM Series · GWHD(18)ND3MOFree Match M R32 · GWHD(18)ND6MO
AHRI number208786089214931586
Rated at −8.3 °C15,00017,600
Maximum at −8.3 °C16,40017,600
Maximum at −15 °C13,60013,800
COP at −15 °C2.212.00
Maximum at −30 °C10,20010,200
ENERGY STARcold climate, Most Efficientcold climate, Most Efficient
Refrigerant and GWP (ENERGY STAR)R-410A, 2,088R-32, 675
LogisVert, list of Oct. 27, 2026$1,800$2,112

NEEP read Oct. 26, 2026; ENERGY STAR read Oct. 26, 2026; Hydro-Québec, list dated Oct. 27, 2026. Capacities in BTU/h, for the whole system. No figure is carried from one model number to the other.

2,600 BTU/h more at −8 °C, $312 more

Hydro-Québec pays on rated heat at −8.3 °C: 17,600 BTU/h are worth $2,112 on the list of Oct. 27, 2026, 15,000 are worth $1,800. In deep cold, the R-32’s lead melts: 200 BTU/h at −15 °C, none at −30 °C. Indicative amounts.

The same M Series for three, four or five rooms, or every GREE line for two rooms, R-32 included:

M Series · 3 roomsM Series · 4 roomsM Series · 5 roomsDual-zone: every line
AirGreen × GREE

Two rooms on an M Series: GREE supplies the system, AirGreen does the rest.

For two rooms, GREE offers five M Series outdoor units. AirGreen helps you avoid paying for capacity you will not use, or keep some for one more room.

GREE

What GREE brings

  • Two zones on every sizeGREE Canada allows two indoor units on every M Series size, from the 18,000 to the 42,000.
  • One power supplyThe indoor units are powered by the outdoor unit, on 208-230 V single phase.
  • Your choice of indoor unitsVITA wall unit, floor console, ceiling cassette or slim duct, per GREE Canada’s brochure.
AirGreen

What AirGreen brings

  • GREE Elite dealerGREE training completed, priority access to original parts.
  • Free estimateWe calculate the heat loss of both rooms, then choose with you the smallest size that does the job.
  • RBQ 5645-9605-01Licences 15.8, 15.10 and 16. Gas and oil work is done by a licensed partner.

The result: two rooms heated and cooled by an M Series of the right size, installed by a GREE Elite dealer.

Compare the five sizesBook my free estimate
The GREE shop

The 5 two-room M Series, from the 18,000 to the 42,000.

Each product sheet gives the AHRI number of the non-ducted configuration and the system’s specifications. The five-size comparison is above.

GREE
Know before you buy

Before the visit: two line sets, winter, the noise outside.

Three tools set to the M Series and to two rooms, built from GREE Canada, Dettson and NEEP documents.

Enter your two lengths: does the chosen size keep up?

The tool applies GREE Canada’s maximum length and total length for the chosen size, then shows the length Dettson pre-charges at the factory.

Technician’s corner

For the electrician and the installer: the M Series from 18,000 to 42,000.

The circuit

Per GREE Canada: 15 A MCA and 20 A maximum protection on the 18,000; 19 A and 25 A on the 24,000; 23 A and 35 A on the 30,000; 29 A and 45 A on the 36,000 and 42,000.

GREE Canada 062024

The charge

Factory charge: 1.3 kg of R-410A on the 18,000, 2.4 kg on the 24,000, 3.0 kg on the 30,000, 3.7 kg on the 36,000 and 3.8 kg on the 42,000. Neither GREE Canada nor Dettson publishes the amount to add per metre beyond the pre-charge.

GREE Canada 062024 · Dettson X61019

Two heights to respect

GREE Canada limits the height between the outdoor unit and the indoor units, and between the indoor units themselves: 15 m on the 18,000 and 24,000, 25 m on the three largest. For two rooms on two floors, the 18,000 follows the same rule as the 24,000.

GREE Canada 062024
Did you know?

Six cards on the 18,000 and its larger siblings. Flip them.

LogisVert · Hydro-Québec

Two rooms: from $1,800 for the 18,000 to $4,272 for the 42,000.

$1,80018,000, non-ducted or all ducted: Hydro-Québec lists the same amount for both AHRI numbers, 208786089 and 208786092.
$2,83224,000: 23,600 BTU/h at −8 °C, paid at the cold-climate rate of $120 per 1,000 BTU/h.
$4,27242,000: the highest M Series amount, on 35,600 BTU/h at −8 °C.
$2,11218,000 Free Match M R32, for comparison: $312 more than the M Series of the same size.

Amounts from Hydro-Québec’s list dated Oct. 27, 2026, indicative: Hydro-Québec sets the final amount when you apply. The Canada Greener Homes Grant ($2,500 / $5,000) no longer stacks on top: Natural Resources Canada accepted applications until Sept. 30, 2025. LogisVert’s rules are on the GREE multi-zone page.

Questions

Two rooms, the 18,000 or larger: your questions.

Which M Series size for two rooms?
All five do, per GREE Canada: the choice comes down to the heat your two rooms need, calculated at your home. At −15 °C, NEEP certifies at most 13,600 BTU/h on the 18,000, 21,600 on the 24,000, 22,800 on the 30,000 and 32,400 on both the 36,000 and the 42,000.
Can I put the M Series in a single room?
No. Dettson’s M Series sheet sets a minimum of two zones, and GREE Canada’s table starts at two units for every size. For a single room, a single-zone wall heat pump is the usual answer.
Is the 18,000 enough for two rooms in a Montréal winter?
It depends on the rooms. NEEP certifies it at 15,000 BTU/h rated at −8.3 °C (16,400 maximum), 13,600 at −15 °C and up to 10,200 at −30 °C. GREE Canada does not publish how that heat is shared between the two M Series units, so we calculate each room’s heat loss on site.
What if a third room comes along in a few years?
Not on the 18,000: GREE Canada allows it only two indoor units. The 24,000 takes three, the 30,000 and 36,000 four, the 42,000 five. If a third room is in your plans, tell us before the quote: the line sets and the heat are then calculated for three.
Does a ducted unit change the 18,000’s LogisVert amount?
Not on the list of Oct. 27, 2026: non-ducted (AHRI 208786089) or all ducted (208786092), Hydro-Québec lists $1,800. ENERGY STAR also lists a third number for the 18,000, 208786097, without naming its configuration; GREE Canada does not print it. For a wall-plus-ducted pair, we confirm the number before you apply.
M Series 18,000 or Free Match M R32 18,000?
On certified figures, the R-32 wins at −8.3 °C (17,600 BTU/h rated against 15,000), hence $2,112 from LogisVert instead of $1,800. The gap shrinks at −15 °C (13,800 against 13,600) and disappears at −30 °C (10,200 for both). The M Series is sold while stocks last; the Free Match M R32 is the current line.
AirGreen

The 18,000 or larger: we decide at your home, figures in hand.

Free estimate at home. Montréal, Laval, Longueuil, South Shore and North Shore.

Contact us514-316-2973
GREE Elite dealerGREE training completed, priority access to original parts.
RBQ 5645-9605-01Licences 15.8, 15.10 and 16.
AHRI on every product pageThis page shows a LogisVert amount only when it matches Hydro-Québec’s list of Oct. 27, 2026.
Sources

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.