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R-410A · five sizes on NEEP
GREE Multi GEN2 · 2 rooms · Updated Oct. 27, 2026

GREE Multi GEN2 dual-zone heat pumps. Five sizes for two rooms. The smallest earns the most from LogisVert, and it is the only one ENERGY STAR rates cold climate.

5 Multi GEN2 two-room systems, from 18,000 to 42,000 BTU/h. For every size, NEEP publishes exactly the same figures as for the Free Match M Series of the same size. Above 18,000 BTU/h, what changes between the two lines is the ENERGY STAR record, and the LogisVert amount with it. Pick your two indoor units below: you will see which sizes take them and what each one earns.

Check my two unitsCompare the five sizesBook my free estimate
$1,800For the 18,000 GEN2, the smallest of the five: $20 more than the 42,000, on Hydro-Québec’s list of Oct. 27, 2026. Indicative amount.
$620Less for the 24,000 on the same list, even though it is rated 8,600 BTU/h higher at −8.3 °C (23,600 versus 15,000). Only the 18,000 is paid at the cold-climate rate: $120 per 1,000 BTU/h instead of $50.
132 ftTwo indoor units each placed at 66 ft, the 18,000’s limit: 1 ft too many for the 131 ft GREE Comfort allows in total. The 24,000 allows 197.
  • 5Multi GEN2 two-room systems
  • 18,000–42,000BTU/h, nominal
  • 1/5ENERGY STAR cold climate
  • 6/6NEEP points identical to the M Series
AirGreen × GREEGREE Elite dealerMulti GEN2 · two roomsSame NEEP figures as the M Series23 Multi GEN2 jobs on our installations blogFree estimate at home
Your two units

Two indoor units: which Multi GEN2 sizes take them, and for how much?

GREE Comfort rates 3 pairs on the 18,000, 6 on the 24,000, 9 on the 30,000 and 10 on the 36,000 and 42,000. Pick yours: each size that takes it shows its LogisVert amount, next to that of the M Series of the same size.

Two rooms, five sizes

Pick the indoor unit size for each room. Green card: same amount as the M Series; on the others, how much less the GEN2 earns.

Amounts: Hydro-Québec’s list dated Oct. 27, 2026, indicative. Hydro-Québec lists them by AHRI number, so by size: they do not change from one pair to another. Pairs: GREE Comfort, March 2023 catalog, a table printed with the Multi+ Ultra except for the 30,000. GREE Comfort does not publish the heat each room receives on a Multi GEN2.

The five sizes

Same NEEP figures, five ENERGY STAR records: what each size earns.

Each column compares a Multi GEN2 with the Free Match M Series of the same size. The certified heat does not move from one line to the other; the LogisVert amount does, and the gap grows with the size.

Multi GEN218,00024,00030,00036,00042,000
Indoor units22 to 32 to 42 to 42 to 5
Pairs rated by GREE Comfort3691010
Max. at −15 °C, whole system (NEEP)13,60021,60022,80032,40032,400
ENERGY STAR cold climateYesNoNoNoNo
Most Efficient markYesNoNoNoNo
“CVP test” fieldENERGY STAR test“None”“None”“None”“None”
LogisVert, Multi GEN2$1,800$1,180$1,360$1,540$1,780
LogisVert, same-size M Series$1,800$2,832$3,264$3,696$4,272
Gap our arithmetic$0$1,652$1,904$2,156$2,492
Sound, outdoor unit (GREE Comfort)53 dB(A)58 dB(A)63 dB(A)63 dB(A)63 dB(A)

NEEP and ENERGY STAR read Oct. 26, 2026; Hydro-Québec LogisVert list dated Oct. 27, 2026, indicative amounts. Units, pairs and sound: GREE Comfort, March 2023 catalog. Same-size M Series: GWHD(18/24/30/36/42)ND3MO, AHRI 208786089, 208786090, 208786091, 208786087 and 208786088.

$1,800 on both sides, at 18,000 BTU/h

It is the only size where the GEN2’s ENERGY STAR record says the same thing as the M Series’: cold climate, CVP test, Most Efficient. For two small rooms, the choice between the two lines is therefore not made on LogisVert. Above it, the GEN2 records read no, “None” and no, with no published explanation.

The same line for three rooms: Multi GEN2 triple-zone. Its NEEP twin: Free Match M Series, 2 rooms. Every line for two rooms: GREE dual-zone.

AirGreen × GREE

The Multi GEN2 comes from GREE. The size, we choose at your home.

GREE Comfort documents the outdoor unit and its indoor units. AirGreen measures both rooms, compares the GEN2 with the same-size M Series, then installs.

GREE

What GREE brings

  • Documented onlineBrochure, submittals and rated-combination table, published by GREE Comfort in the United States.
  • Certified figures down to −30 °CEach size has its own NEEP record, from 8.3 °C to −30 °C, under its own AHRI number.
  • A 5,000 or 7,000 wall unitGREE Comfort allows one in place of any 9,000 unit, for a small room.
AirGreen

What AirGreen brings

  • GREE Elite dealerGREE training completed, priority access to original parts.
  • Free estimateWe measure both rooms, then show you the GEN2 and the same-size M Series side by side, LogisVert amount included.
  • 23 Multi GEN2 jobsAll sizes and room counts together, each with its own article and photos on our installations blog (count as of Oct. 14, 2026).
  • RBQ 5645-9605-01Licences 15.8, 15.10 and 16. Gas and oil work is done by a licensed partner.

The result: two rooms on the Multi GEN2 size that takes them, chosen knowing what LogisVert pays for it.

Check my two unitsBook my free estimate
The GREE shop

All 5 Multi GEN2 two-room systems, right below.

Each product sheet gives the system’s AHRI number: that is what ties it to NEEP, ENERGY STAR and Hydro-Québec’s list.

GREE
Know before you buy

Two rooms on a GEN2: cold, line sets, sound.

Three tools built from dated documents. Lengths are in feet, as GREE Comfort publishes them.

What NEEP certifies for each Multi GEN2, from 8.3 °C to −30 °C.

Pick a size. The bars come from the Multi GEN2’s NEEP record; the M Series of the same size has exactly the same ones. With two units, this is the whole system’s heat, shared by both rooms.

Montréal’s design temperatures and their sources are on the GREE multi-zone page.

Technician’s corner

Two rooms on a GEN2: for your electrician and your installer.

The circuit, size by size

GREE Comfort: 15 A MCA and 20 A MOCP on the 18,000 (10 A rated current), 19 and 25 A on the 24,000, 23 and 35 A on the 30,000, 29 and 45 A on the 36,000. For the 42,000, the spec page and online brochure give 29 and 45 A, the quick reference 24 and 40 A: the nameplate decides.

GREE Comfort, 2023 catalog · online brochure

The factory charge

R-410A: 45.9 oz on the 18,000, 84.6 on the 24,000, 105.8 on the 30,000, 130.5 on the 36,000 and 134 on the 42,000. At least 10 ft of line set to each indoor unit.

GREE Comfort, 2023 catalog

The dimensions

Width × height × depth per GREE Comfort: 32 3/8 × 21 11/16 × 13 7/8 in for the 18,000, 38 × 26 × 15 7/8 in for the 24,000, 40 3/16 × 32 9/16 × 16 13/16 in from the 30,000 to the 42,000.

GREE Comfort, 2023 catalog

The operating ranges

Heating from −22 to 75 °F, that is −30 to 24 °C, per GREE Comfort; NEEP certifies a point at −30 °C for every size, from 10,200 to 24,500 BTU/h at most. Cooling: −22 to 118 °F on the spec page, 22 to 118 °F in the quick reference.

GREE Comfort, 2023 catalog · NEEP
Did you know?

Five things to know about the two-room Multi GEN2. Flip the cards.

LogisVert · Hydro-Québec

Two rooms: $120 per 1,000 BTU/h on the 18,000, $50 above it.

$1,80018,000: 15,000 BTU/h at −8.3 °C at the $120 cold-climate rate. Same amount as the 18,000 M Series.
$1,18024,000: 23,600 BTU/h at the $50 rate, the one for ENERGY STAR systems without the cold-climate designation.
$1,54036,000: 30,800 BTU/h at the same $50 rate.
$1,78042,000: 35,600 BTU/h at $50. That is $20 less than the smallest of the five.

Amounts as listed by Hydro-Québec on Oct. 27, 2026, indicative: Hydro-Québec confirms them when you apply, within 9 months of installation, capped at the pre-tax cost. Full program conditions: GREE multi-zone page.

Questions

What people ask us about the two-room Multi GEN2.

Does the Multi GEN2 heat as well as the M Series for two rooms?
On certified figures, yes: at every size, NEEP publishes the same capacities, power and COP for the Multi GEN2 as for the Free Match M Series, at all six rated temperatures. What differs above 18,000 BTU/h is the ENERGY STAR record: no cold-climate designation, no Most Efficient mark, and “None” in the CVP test field. No source says why.
Which size for two small bedrooms?
Often the 18,000: GREE Comfort rates 9 + 9, 9 + 12 and 12 + 12 on it, with 131 ft of line set in total and 66 ft to the farthest indoor unit. It is listed at $1,800 on Hydro-Québec’s list of Oct. 27, 2026, an indicative amount. Each room’s heat loss is calculated at your home.
Why does LogisVert pay less for the 24,000 than for the 18,000?
Because Hydro-Québec applies two rates to the heat rated at −8.3 °C: $120 per 1,000 BTU/h if ENERGY STAR rates the system cold climate, $50 otherwise. The 18,000 has that designation, so its 15,000 BTU/h earn $1,800. The 24,000 does not: its 23,600 BTU/h earn $1,180. These are the indicative amounts on the Oct. 27, 2026 list.
Could a third room be added later?
Not on the 18,000: GREE Comfort limits it to two indoor units. The 24,000 takes up to three, the 30,000 and 36,000 up to four, the 42,000 up to five. If a third room is planned, we account for it when choosing the size.
How long can the two line sets be on a GEN2?
It depends on the size: 131 ft in total on the 18,000, 197 on the 24,000, 263 on the 30,000 and 36,000, 328 on the 42,000, with at least 10 ft per unit. On the 18,000, two units at 66 ft each exceed the total by one foot; the “Line sets” tool below checks your lengths.
What warranty does the Multi GEN2 carry?
The only one GREE Comfort publishes for the Multi GEN2 is a US warranty: 5 years on parts, 7 years on the compressor, residential and commercial. No Canadian terms are published; ask us for the written terms that apply to your unit before you sign.
AirGreen

Two rooms? We show you the Multi GEN2 and the same-size M Series, LogisVert amounts side by side.

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.
23 Multi GEN2 jobsPublished with photos on our installations blog, counted on Oct. 14, 2026.
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.