Ductless Double Zone Heat Pump Gree Free Match Extreme Compressor 18 000 BTU Montreal

In stock
SKU: GWHD(18)ND3J/O-99
18,000BTU/h · 2 heads
−35 °Cheats down to
Wi-Fi includedR-410AUp to 2 heads
Areas
Talk to a technician · 514 316-2973
Outdoor unit GWHD(18)ND3J/OPossible indoor models GWH09AAD-D3DNA2B/I, GWH12AAD-D3DNA2A/IAHRI 202557965
In short

The Gree Free Match Extreme 18 000 multi-zone heat pump heats and cools 2 rooms with a single outdoor unit., heats down to −35 °C. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.

01 · The verdict in 10 seconds

2 rooms, one outdoor unit.

Compared with the 48 multi-zone systems of 18,000 BTU we sell. Figures come from the manufacturer’s data and the AHRI certification.

AHRI 202557965
+Heats down to −35 °CRank 1 (tied) of 48. Class median: −25.5 °C.
+SEER2 23.0Rank 8 (tied) of 47. Class median: 22.0.
+Indoor head from 22 dB(A)Rank 11 of 45. Class median: 27 dB(A).
−35 °Cstill heating
2heads
02 · The machine

The parts that make a multi-zone system.

Tap a part to learn more.

GWHD(18)ND3J/O

Outdoor unit

One compressor for the whole house. It supplies up to 2 heads.

03 · The series

The whole series at a glance: find the box that fits you.

Each box is a product: the outdoor unit’s size, and the number of heads.

Outdoor2 zones3 zones4 zones5 zones
18,000BTU
Here
24,000BTU
23
36,000BTU
234
42,000BTU
2345

Gree Free Match Extreme 18 000 · 2 zones

Up to 2 heads on this outdoor unit. Tap another box to see that size.

04 · Efficiency

The official ratings, on the same scales as before.

SEER2, HSPF2 and EER2 come from the AHRI certification. The mark shows the median of the same-size multi-zone systems we sell.

SEER2 · seasonal cooling23.0
Scale 1 – 30Median: 22
Rank 8 (tied) of 47 in its class.
05 · Report card

Where it ranks among same-size multi-zone systems.

Compared with the 48 multi-zone systems of 18,000 BTU we sell. Weaknesses too, said plainly.

06 · Head-to-head

Against three other brands in its class.

Same rated size, other manufacturers. Pick the opponent.

07 · Multi-zone or wall units

One multi-zone or several wall units? Both sides, honestly.

This multi-zone2 wall units
On the wall1 outdoor unit2 outdoor units
Electrical1 dedicated circuitOne circuit per unit
CapacityShared between roomsReserved for each room
If the outdoor unit stopsEvery zone stopsOnly one room
ModesSame mode everywhereEach room chooses
LogisVertPer the listDepends on each model

We compare both options on your floor plan during the estimate.

08 · Installation

What to know before installing a multi-zone system.

Dimensions, wiring and lines, drawn. Then our six steps.

The outdoor unit, dimensioned

31.11 in
GWHD(18)ND3J/ODepth 16.41 in
39.48 in
Dimensions: product sheet (W × D × H).

One circuit for the whole house

Electrical panel
Load calculation before the quote
35 A max. breaker
MCA 23 A · 220 V
Outdoor unit
Head 1
Head 2
Our RBQ licence covers electrical work (subclass 16).
01Room-by-room visit and surveyWe measure each zone and note insulation and windows. The on-site estimate is free.
02Heads and line layoutOne pair of lines per head.
03Outdoor unit baseAbove the snow line, away from the neighbours’ bedroom windows.
04Exposed, finished linesLines 1/4 - 3/8 in under line covers, no work inside the walls.
05Dedicated circuit220 V, MCA 23 A, 35 A protection. The panel load calculation is done before the quote.
06Commissioning, zone by zoneEach head is tested and the controls set up.
09 · Sound

Published sound levels, on one scale.

We use the outdoor figure to choose where the unit goes.

22
49
58
27
56
20 dB(A)3040506070
22 Reference head, lowest speed49 Reference head, highest speed27 Class indoor median58 Outdoor unit56 Class outdoor median
Values in dB(A). Indoor values are those of the sheet’s reference head; each head has its own, confirmed for the chosen model. Municipal noise by-laws vary by borough.
10 · Specifications

Every number, and where it comes from.

Each line carries its source; a line with no published value is not shown.

Performance
Cooling capacity (size)18,000 BTU · 1,5 tonsSheet
SEER2 (seasonal cooling efficiency)23.0AHRI
Heating
Heats down to−35 °CSheet
Zones and heads
Zones on this product2 Zones (Dual Zone)Sheet
Maximum zones2 Zones (Dual Zone)Sheet
Possible indoor modelsGWH09AAD-D3DNA2B/I, GWH12AAD-D3DNA2A/ISheet
Combinations offered2 · 9 + 9 … 9 + 12Sheet
Indoor dimensions (W × D × H)38.19 × 8.86 × 11.81 inSheet
Vertical louversManualSheet
Horizontal louversAutoSheet
Airflow (reference head)500 CFMSheet
Indoor sound (reference head)22 – 49 dB(A)Sheet
Installation
Outdoor unit (W × D × H)39.48 x 16.41 x 31.11 inSheet
Line sizes1/4 - 3/8 inSheet
Outdoor sound58 dB(A)Sheet
Electrical
Voltage220 VSheet
MCA (minimum circuit ampacity)23 ASheet
MOP (maximum overcurrent protection)35 ASheet
RefrigerantR-410ASheet
Wi-FiIncludedSheet
Certifications and warranty
AHRI202557965AHRI
Warranty (compressor · parts · labour)10 yrs · 10 yrs · 10 yrsSheet
AirGreen extended warrantyIncludedSheet
11 · Official brochures

The manufacturer’s documentation, as PDF.

12 · Description

Everything we have written about this system.

Installation and distribution of a Multi-Zone heat pump with two (2) zones. Gree Free Match Extreme UltraHeat wall-mounted mini split with an 18,000 BTU compressor, in Greater Montreal.

Enjoy efficient comfort at a great price throughout your home with Gree! The Free Match Extreme Ultra Heat multi-zone system is very versatile, allowing it to meet the comfort needs of everyone and every room in your home. Thanks to cutting-edge technologies, the high-efficiency Free Match Extreme heat pumps provide both powerful "ULTRA" heating and cooling in two to five distinct zones. This way, you can have independent control of each room thanks to the many remote controls available for each indoor unit. This system heats even down to -35°C!

This series qualifies for numerous provincial rebates, such as "Efficient Heat Pumps", "Heat Green", or "RénoClimat", as well as federal ones like "Greener Homes".

Some features:

  • Can power up to 5 indoor units
  • Low voltage start-up
  • Fins with anti-corrosion coating
  • Self-diagnostic function
  • Automatic defrost function
  • Reinforced steel casing
  • Eco-friendly refrigerant R410A
  • Energy Star certified
  • Heats down to -35°C!
  • WiFi
  • Offered with a 10-year warranty on parts, 10 years on the compressor, and even 10 years on labor, directly from the manufacturer!
Compressor Power Indoor Unit Power (Zones/Indoor Units)
18,000 BTU 9,000 BTU + 9,000 BTU
18,000 BTU 9,000 BTU + 12,000 BTU
13 · Questions

What people ask us about multi-zone systems.

Can I heat one room and cool another at the same time?

No. On a multi-zone system like this one, every head works in the same mode, heating or cooling. Each room still keeps its own set temperature.

How many heads can I connect?

Up to 2 on this outdoor unit. This product is configured for 2 heads.

Can I mix head sizes?

Yes. The “Zones” menu offers 2 combinations, from 9 + 9 to 9 + 12 (in thousands of BTU). Each head is sized for its room.

Down to what temperature does it heat?

Down to −35 °C.

Is it noisy?

Indoors, the reference head goes down to 22 dB(A). Outdoors, 58 dB(A): we place the unit away from bedroom windows.

Why a multi-zone instead of several wall units?

One outdoor unit on the wall and one circuit. In return, the rooms share the capacity, and if the outdoor unit stops, every zone stops.

What does the warranty cover?

Our sheet lists 10 years on the compressor and 10 years on parts. AirGreen extended warranty: included.

AirGreen

A multi-zone system is planned room by room. At your home.

We measure every room, draw the line route and choose the right head for each zone. The on-site estimate is free and the quote arrives within 24 h.

RBQ 5645-9605-01Ventilation 15.8, refrigeration 15.10, electrical 16
We handle the circuitOur licence covers the electrical work
Beware of scamsHydro-Québec does no phone or door-to-door solicitation for LogisVert
Sources checked on October 1, 2026.Costs: Hydro-Québec Rate D, 11.142 ¢/kWh (second tier, since 1 April 2026). Amounts shown are estimates; only the responsible bodies confirm the grant awarded.