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GREE Free Match M Series · 3 rooms · Updated Oct. 27, 2026

GREE Free Match M Series heat pumps, 3 rooms. The 24,000 stops at three units and 15 m of height; the 30,000 goes to 25 m and accepts a fourth room. Three answers about your home are enough to choose.

4 M Series three-room systems, from 24,000 to 42,000 BTU/h, on R-410A. A bungalow’s two bedrooms and living room, or three rooms over two or three floors. The real choice is between the 24,000 and the 30,000: the first is lighter and quieter, the second accepts more height and more line set.

24,000 or 30,000?See the four sizesBook my free estimate
4M Series sizes that take three rooms: 24,000, 30,000, 36,000 and 42,000 BTU/h. The 18,000 offered on airgreen.ca stops at two.
15 mThe height difference the 24,000 allows, between indoor units and to the outdoor unit alike. The three larger sizes allow 25 m.
58 dB(A)The sound level GREE Canada prints for the 24,000, the quietest of the four three-room sizes. For the 30,000, 36,000 and 42,000, it prints 63 dB(A).
  • 4three-room systems on this page
  • 24,000–42,000BTU/h, rated
  • 4/4ENERGY STAR cold climate, by non-ducted AHRI number
  • R-410Asold while stocks last
AirGreen × GREEGREE Elite dealerFree Match M Series, three rooms24,000 or 30,000: the real question15 m or 25 m of heightMontréal, Laval, Longueuil, South Shore, North Shore
The three-room choice

24,000 or 30,000? Three questions about your home settle it.

The 24,000 has three limits the 30,000 does not: 15 m of height, 20 m of line set for one room and no fourth unit. Answer for your home; the answer also says what the next step up costs and earns.

Three answers about your home

Measured or estimated, they are enough to settle the 24,000 against the 30,000 on the limits GREE Canada publishes. Heat is calculated at the visit.

Limits, weight, sound and circuit: GREE Canada, document 062024. Heat: NEEP, read Oct. 26, 2026. LogisVert: the amounts, indicative, come from Hydro-Québec’s list of Oct. 27, 2026. “Longest line set”: GREE Canada’s maximum pipe length, read as the limit for each line set.

Four sizes, side by side

What the M Series gives three rooms, from the 24,000 to the 42,000.

Figures in bold are the 24,000’s own limits. Above it, the 36,000 and 42,000 stand apart mostly on heat and on the LogisVert amount.

M Series24,00030,00036,00042,000
Indoor units allowed2 to 32 to 42 to 42 to 5
Rated at −8.3 °C (NEEP)23,60027,20030,80035,600
Maximum at −15 °C (NEEP)21,60022,80032,40032,400
Maximum at −30 °C (NEEP)17,22020,02024,02024,500
LogisVert, list of Oct. 27, 2026$2,832$3,264$3,696$4,272
Maximum length · total20 m · 60 m25 m · 80 m25 m · 80 m25 m · 100 m
Height, between units and to the outdoor unit15 m25 m25 m25 m
Factory pre-charged (Dettson)30 m40 m40 m40 m
Height · net weight660 mm · 52.0 kg826 mm · 69.0 kg826 mm · 78.0 kg826 mm · 79.0 kg
Sound, outdoor unit58 dB(A)63 dB(A)63 dB(A)63 dB(A)
MCA · maximum protection19 A · 25 A23 A · 35 A29 A · 45 A29 A · 45 A
Heat for each room, three unitsnot publishednot publishednot publishednot published

Sources: GREE Canada 062024 for limits, cabinet, sound and circuit; Dettson X61019_C for the pre-charge. Heat: NEEP as of Oct. 26, 2026; amounts: LogisVert list of Oct. 27, 2026, indicative. Non-ducted AHRI numbers: 208786090, 208786091, 208786087 and 208786088. “Maximum length”: that of each line set.

Three-unit combination table: not published

GREE Canada makes no three-unit combination public for the M Series: its tables are kept for dealers. This page therefore gives no per-room share, and borrows none from another line. It is checked in the quote.

Other room counts on the M Series, or triple-zone across every line, R-32 included:

M Series · 2 roomsM Series · 4 roomsM Series · 5 roomsTriple-zone: every line
AirGreen × GREE

Three rooms on an M Series: heights and lengths are measured before the size.

The M Series comes from GREE; the size depends on your house. AirGreen takes the height between floors and the length of each line set, calculates the heat, then picks the size.

GREE

What GREE brings

  • Three rooms on four sizesGREE Canada allows three units on the 24,000, 30,000, 36,000 and 42,000.
  • Two published heightsBetween indoor units, and between the outdoor unit and the indoor units: GREE Canada gives both for every size.
  • Cold climate at every sizeAt ENERGY STAR, the non-ducted 24,000, 30,000, 36,000 and 42,000 carry both the cold-climate and the Most Efficient marks.
AirGreen

What AirGreen brings

  • GREE Elite dealerGREE training completed, priority access to original parts.
  • Free estimateAt the visit, tape and level first: heights, lengths, then the size.
  • RBQ 5645-9605-01Licences 15.8, 15.10 and 16. Gas and oil work is done by a licensed partner.

The result: an M Series that respects your heights and lengths, and three rooms warm in winter.

24,000 or 30,000?Book my free estimate
The GREE shop

Three rooms on an M Series: the 4 systems for sale.

On each sheet: the AHRI number for the non-ducted configuration. The 24,000 or 30,000 choice is at the top of the page; the four sizes side by side, right after.

GREE
Know before you buy

The 24,000 or larger: three tools to prepare the visit.

GREE Canada’s limits, Dettson’s pre-charge and NEEP’s capacities, set to three M Series rooms.

Your three lengths, against each size’s limits.

Three lengths, one size: each line set is checked against GREE Canada’s limit, their sum against the total allowed, then against Dettson’s pre-charge. The height allowed is recalled below.

Technician’s corner

Three rooms on the M Series: the circuit, the charge, the heights.

The circuit

Circuit per GREE Canada: 19 A MCA and 25 A maximum protection for the 24,000; 23 A and 35 A for the 30,000; 29 A and 45 A for the 36,000 and 42,000. The outdoor unit itself feeds the three indoor units (208-230 V, single phase).

GREE Canada 062024

The refrigerant

The 24,000 holds 2.4 kg of R-410A, pre-charged for 30 m of line set; 3.0, 3.7 and 3.8 kg on the three larger sizes, pre-charged for 40 m. Beyond that, how much R-410A to add: no public M Series document says.

GREE Canada 062024 · Dettson X61019

The line sizes

Same diameters on all four sizes per GREE Canada: 9.52 mm (3/8 in) suction, 6.35 mm (1/4 in) liquid. From one size to the next, what changes is the length and height allowed, not the lines.

GREE Canada 062024
Did you know?

24,000 or 30,000: six cards to flip.

LogisVert · Hydro-Québec

Three rooms: from $2,832 to $4,272 on the M Series.

$2,83224,000: the same amount as its R-32 successor, at 23,600 BTU/h rated at −8 °C.
$3,26430,000: $432 more than the 24,000, for 25 m of height and a possible fourth unit.
$3,69636,000: the first size at 32,400 BTU/h at −15 °C, per NEEP.
$4,27242,000: the highest amount on this page, on 35,600 BTU/h at −8 °C.

Indicative amounts taken from the list of Oct. 27, 2026; the final amount is the one Hydro-Québec grants when you apply. For comparison, the Free Match M R32 gets $2,832, $3,360, $4,320 and $5,340 at the same sizes. The federal Greener Homes program ($2,500 / $5,000) is closed: it took its last applications on Sept. 30, 2025.

Questions

Three rooms, heights and line sets: what people ask.

Which M Series sizes take three rooms?
Four, per GREE Canada: the 24,000 (2 to 3 units), the 30,000 and 36,000 (2 to 4) and the 42,000 (2 to 5). The 18,000 offered on airgreen.ca, GWHD(18)ND3MO, stops at two. GREE Canada’s brochure also lists an 18,000 variant that takes three, GWHD(18)ND3PO; it is not offered on this page.
24,000 or 30,000 for three rooms?
The 24,000 is lighter (52.0 kg against 69.0), quieter (58 dB(A) against 63) and on a smaller circuit (19 A MCA against 23). It does stop at three units, 60 m of total line set and 15 m of height. The 30,000 gives a little more heat in deep cold per NEEP, takes a fourth unit and earns $432 more on the LogisVert list. The tool at the top of the page settles it with your measurements.
Three rooms on three floors: does height matter?
Yes. On the 24,000, GREE Canada limits the height between indoor units to 15 m, and the same between the outdoor unit and the indoor units. The 30,000, 36,000 and 42,000 allow 25 m. We measure the real height at the visit, from basement to attic.
How much line set per room?
On the 24,000, GREE Canada prints a maximum length of 20 m and 60 m in total; on the 30,000 and 36,000, 25 m and 80 m; on the 42,000, 25 m and 100 m. Dettson pre-charges the 24,000 for 30 m and the others for 40 m. Any extra refrigerant beyond that is worked out on site: no per-metre figure is published.
Does the R-32 version get more LogisVert for three rooms?
Not at 24,000, where the amount is the same. Above that, yes: $3,360 against $3,264 at 30,000, $4,320 against $3,696 at 36,000 and $5,340 against $4,272 at 42,000, per the list of Oct. 27, 2026 (indicative amounts). Hydro-Québec follows rated heat at −8 °C, higher on R-32 from the 30,000 up, and confirms the amount when you apply.
Does the 24,000 still heat at −30 °C?
Yes, per NEEP: up to 17,220 BTU/h at −30 °C for the whole system, at a COP of 1.50. GREE Canada sets its heating limit at −30 °C. That is the heat the three rooms share; each one’s share is not published for the M Series.
AirGreen

Your heights, your lengths, then the size: we start by measuring.

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.