Home » Gree Multi+ Ultra Double Zone Heat Pump
AirGreenGREE
GREE EliteThe GREE space at AirGreen · Multi+ Ultra · 2 roomsGREE Elite dealer: GREE training completed, priority access to original parts.
GREE Elite
R-410A · while stocks last
GREE Multi+ Ultra · 2 rooms · Updated Oct. 27, 2026

GREE Multi+ Ultra dual-zone heat pumps. Two rooms, an R-410A line documented in the United States. How much heat does each room get? GREE Comfort publishes it, pair by pair.

4 two-room Multi+ Ultra systems, from 18,000 to 42,000 BTU/h. Model numbers MULTIU…HP230V1DO, sold while stocks last. Since late October 2026 the line is off NEEP, ENERGY STAR and the LogisVert list; its submittals still give each room’s heat for 29 pairs of indoor units.

See each room’s heatThe status, source by sourceBook my free estimate
9,500 BTU/hPer room when two 9,000 units share the 24,000, per GREE Comfort’s submittal: a little more than their size. On the 18,000, the same pair gets 9,000 each.
20 AMCA of the 18,000 per GREE Comfort. For the 18,000 Free Match Extreme, GREE Canada prints 23 A: cousins, not twins.
66 ftPre-charged length of the 18,000, about 20 m: two 33 ft line sets (our arithmetic) need no added R-410A. Beyond that, GREE Comfort calls for 0.2 oz per foot.
  • 4two-room systems on this page
  • 18,000–42,000BTU/h, nominal
  • 29pairs rated by GREE Comfort, heat per room included
  • May 15, 2023date of the submittals
AirGreen × GREEGREE Elite dealerMulti+ Ultra, two roomsEach room’s heat, per GREE Comfort29 rated pairs of indoor unitsMontréal, Laval, Longueuil, South Shore, North Shore
Each room’s heat

Two rooms, four sizes: what each unit gets.

GREE Comfort prints, for each pair of indoor units, the heat each one gets. Pick your two sizes: the answer comes up for the 18,000, 24,000, 36,000 and 42,000.

Your two units, the four sizes

Pick the indoor unit size for each room. Each column shows what the pair gets on the 18,000, 24,000, 36,000 and 42,000; a dashed frame means the pair is not rated for that size.

October 2026

Three lists, three removals, documentation still online.

GREE Comfort’s documents have not moved; the lists have. Here is what each source says, and on what date.

SourceStatusThe details, dated
NEEPcold-climate list
Removed
All four records were “Live” on Oct. 15, 2026, modified Aug. 24; on Oct. 26, AHRI numbers 203989085, 203989086, 204288780 and 204288781 return nothing.
ENERGY STARdataset w7cv-9xjt
Removed
“Cold climate” in the Oct. 14, 2026 dataset, certified June 13; no MULTIU model left in the one of Oct. 25.
LogisVertHydro-Québec
Not listed
All four sizes were on the list of Oct. 15, 2026; none of the four numbers is on the one of Oct. 27.
GREE ComfortUnited States
Documented
Its Multi+ Ultra page, read Oct. 26, 2026, still lists the revision D brochure, submittals and AHRI certificates, with no status statement.

We found no Canadian document for the MULTIU model numbers: this line’s documentation is American. The submittals also give ducted and mixed AHRI numbers; those were not checked against the lists.

Cousins, not twins

Multi+ Ultra or Free Match Extreme: where the figures part ways.

The two R-410A lines share many values, but not all. GREE Comfort documents the Multi+ Ultra, GREE Canada the Free Match Extreme: we never carry a figure from one over to the other.

Published valueMulti+ Ultra · GREE ComfortFree Match Extreme · GREE Canada
MCA, 18,00020 A23 A
Cabinet, 18,00037 5/8 × 27 5/8 × 15 5/8 in1003 × 790 × 417 mm (39-31/64 × 31-7/64 × 16-13/32 in)
Cooling, 42,000 (range)42,000 (8,871 – 42,991)42,000 (10,236 – 38,214)
Heating, 42,000 (range)42,000 (8,871 – 46,062)42,000 (10,236 – 46,744)
COP, 18,000 and 42,0003.6 · 3.73.60 · 3.40
Maximum length as printed, 42,000246 ft in total80 m (262.5 ft), under “from ODU to last IDU”
Cooling, upper limit115 °F at every size48 °C (118 °F) on the 18,000 and 24,000, 46 °C (115 °F) above

Same values in both documents, at every size: number of zones, SEER2, EER2 and HSPF2 with and without ducts, ENERGY STAR marks, heating down to −31 °F, catalog sound level and MOP (printed values compared after unit conversion). Sources: GREE Comfort catalog GREE_CATALOG_03222023; GREE Canada, document No. 062024.

On R-32, today

The same pairs on the Free Match M R32, certified and on the LogisVert list.

For two rooms, GREE Canada’s R-32 line often gives the same heat per room as the Multi+ Ultra, sometimes a little more, sometimes a little less. What mostly changes: certification and the LogisVert amount.

Pair and sizeMulti+ Ultra · GREE ComfortFree Match M R32 · GREE Canada
12,000 + 12,000 on the 18,0009,000 · 9,0009,000 · 9,000
9,000 + 9,000 on the 24,0009,500 · 9,5009,000 · 9,000
24,000 + 24,000 on the 42,00020,000 · 20,00021,000 · 21,000
NEEP and ENERGY STARRemoved in October 2026Every size, “cold climate”
LogisVert, list of Oct. 27, 2026No amount$2,112 to $5,340

Per-room heat at rated conditions: GREE Comfort submittals of May 15, 2023; GREE Canada’s Free Match M R32 combination tables (document No. 092026). NEEP and ENERGY STAR status as of Oct. 26, 2026; indicative amounts.

The GREE dual-zone on R-32Multi+ Ultra, 3 roomsFree Match Extreme, 2 rooms
AirGreen × GREE

Two rooms on a Multi+ Ultra: GREE designs, AirGreen installs.

GREE Comfort documents the outdoor unit and its combinations. AirGreen picks the pair of indoor units with you, confirms the models and installs it all.

GREE

What GREE brings

  • 29 rated pairsFrom 9,000 + 9,000 to 24,000 + 24,000, each room’s heat included, in the submittals of May 15, 2023.
  • A two-stage compressorGREE Comfort describes the line’s G-10 as a “2 stage / 3 cylinder” variable-speed unit.
  • Indoor units by size9,000 and 12,000 on every size, 18,000 from the 24,000, 24,000 from the 36,000, per GREE Comfort’s compatibility chart.
AirGreen

What AirGreen brings

  • GREE Elite dealerGREE training completed, priority access to original parts.
  • Free estimateWe measure both rooms, pick the pair of units and confirm the models with you before the quote.
  • 7 Multi+ Ultra projectsPublished on our installations blog, all sizes together, each with its own article and photos (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 whose share of heat is known before the install, on a Multi+ Ultra installed by a GREE Elite dealer.

See each room’s heatBook my free estimate
The GREE shop

All 4 two-room Multi+ Ultra systems, right below.

One product sheet per size, from the 18,000 to the 42,000. What each room gets, per GREE Comfort, is in the tool at the top of the page.

GREE
Know before you buy

Two rooms: line sets and sound, in feet and dB(A).

Two tools built from GREE Comfort’s catalog and submittals, in their original units. They help you prepare for the visit, without replacing the measurements taken at your home.

Your two line sets, in GREE Comfort’s units

Pick the size, then enter in feet the length of each line set and the largest height difference. The tool adds them up.

Technician’s corner

The Multi+ Ultra for two rooms: the electrician’s and installer’s sheet.

The 18,000’s electrical

Rated current 22 A, MCA 20 A, MOCP 35 A, voltage 187 to 253 V. The submittal suggests a 20 A breaker; the quick reference guide, AWG 10 wire at minimum and a dedicated circuit, which we install under our RBQ 16 licence. The printed rated current is above the MCA: the nameplate governs.

GREE Comfort, catalog and submittal

The other three sizes

MCA of 23, 36 and 38 A and MOCP of 40, 60 and 60 A for the 24,000, 36,000 and 42,000. For the 42,000, GREE Comfort’s quick reference guide prints an MCA of 36 A: the nameplate decides.

GREE Comfort, 2023 catalog

Three AHRI numbers for the 18,000

203989085 non-ducted, 204631568 ducted, 204664395 mixed, per the submittal of May 15, 2023. The first was on the LogisVert list of Oct. 15, 2026; the other two were not checked against the lists.

GREE Comfort, 18,000 submittal

With ducted units

With ducted units, GREE Comfort rates the 18,000 SEER2 14.5, EER2 8.5, HSPF2 7.8 and COP 2.7, ENERGY STAR mark “NO”; non-ducted, 20, 12, 10 and 3.6, mark “YES”.

GREE Comfort, 2023 catalog
Did you know?

Six things to know about the two-room Multi+ Ultra. Flip the cards.

LogisVert · Hydro-Québec

LogisVert: the Multi+ Ultra is off the list.

$0AHRI numbers 203989085, 203989086, 204288780 and 204288781 are not on Hydro-Québec’s list dated Oct. 27, 2026.
As of Oct. 15$2,040 to $3,600: their range on the Oct. 15, 2026 list, from the 18,000 to the 42,000. It no longer applies.
$2,112The 18,000 Free Match M R32, on R-32, on the Oct. 27, 2026 list; $5,340 for the 42,000.
$50 · $120Per 1,000 BTU/h at −8 °C, depending on whether the heat pump is ENERGY STAR or ENERGY STAR “cold climate”. Off the list, nothing.

Amounts stay indicative until Hydro-Québec confirms them. How the program works is explained on the GREE multi-zone page.

Questions

What people ask us about the two-room Multi+ Ultra.

Is the Multi+ Ultra still certified and LogisVert-eligible?
No. As of Oct. 26, 2026, none of the four sizes is on NEEP; ENERGY STAR removed them from its Oct. 25 dataset, and the LogisVert list of Oct. 27 no longer contains them.
Two rooms: how much does each one get?
It depends on the pair. On the 18,000, two 9,000 or two 12,000 units get 9,000 BTU/h each; on the 24,000, two 12,000s or two 18,000s get 12,000. These are GREE Comfort’s capacities at rated conditions, not deep-cold figures: the tool at the top of the page gives all 29 pairs.
How cold can the Multi+ Ultra heat?
GREE Comfort gives a heating range down to −31 °F, about −35 °C. That is an operating range, not a certified capacity; at Montréal-Trudeau, the coldest reading of the 1991–2020 normals is −31.8 °C.
Is it the same machine as the Free Match Extreme?
No. The two documents share many figures, but not all: at 18,000, GREE Comfort prints an MCA of 20 A and a smaller cabinet than GREE Canada’s Free Match Extreme (23 A, 1003 × 790 × 417 mm); at 42,000, the capacity ranges and the printed maximum length differ. The “Cousins, not twins” table compares them.
Which indoor units fit?
Per GREE Comfort’s compatibility chart: 9,000 and 12,000 units on every size, 18,000 from the 24,000 and 24,000 from the 36,000, wall units as well as ducted units, cassettes or consoles. The exact models are confirmed in the quote.
Does the US warranty apply here?
GREE Comfort publishes US terms only: “5 Years Parts, 7 Years Compressor”. We found no Canadian warranty document for the Multi+ Ultra: before you sign, ask us for the written warranty that covers your unit.
AirGreen

Two rooms on a Multi+ Ultra? We pick the pair, then check every length.

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.
7 Multi+ Ultra projectsPublished with photos on our installations blog, counted on Oct. 14, 2026.
RBQ 5645-9605-01Licences 15.8, 15.10 and 16.
29 pairs, one sourceThe per-room heat on this page comes from GREE Comfort’s submittals of May 15, 2023.
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.