ACD

ACD heat pump - MPD | 3 Heads - 42,000 BTU Compressor | Montreal, Laval, Longueuil, South Shore & North Shore

In stock
SKU: MPD42KCH21S-O-999
42,000BTU/h · 3 heads
−20 °Cheats down to
R-410AUp to 5 heads
Areas
Talk to a technician · 514 316-2973
Outdoor unit MPD42KCH21S-OPossible indoor models OCD09KCH23S-I, OCD12KCH22S-I, OCD18KCH20S-I, OCD24KCH20S-IAHRI 202110506
In short

The ACD MPD 42 000 multi-zone heat pump heats and cools 3 rooms with a single outdoor unit. it delivers 29,000 BTU/h at −8 °C, heats down to −20 °C. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.

01 · The verdict in 10 seconds

3 rooms, one outdoor unit.

Compared with the 86 multi-zone systems of 42,000 BTU we sell. Figures come from the manufacturer’s data and the AHRI certification.

AHRI 202110506
!Good to know: heats down to −20 °CRank 59 of 86; class median: −25 °C.
29,000BTU/h at −8 °C
−20 °Cstill heating
3 → 5heads, on the same unit
02 · The machine

The parts that make a multi-zone system.

Tap a part to learn more.

MPD42KCH21S-O

Outdoor unit

One compressor for the whole house. It supplies up to 5 heads.

03 · How it works

Turn rooms on and off. Watch the power being shared.

One outdoor unit supplies every head: when several rooms call at once, they share its capacity. Pick an outdoor temperature.

04 · My plan

Tell us your rooms. We tell you if this size is enough.

Pick the number of rooms and their size. The estimate targets a −15 °C day; it is a guide, the real calculation is done room by room at your home.

05 · 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
2
24,000BTU
23
30,000BTU
234
36,000BTU
2345
42,000BTU
2Here45

ACD MPD 42 000 · 3 zones

29,000 BTU/h
at −8 °C

Up to 5 heads on this outdoor unit. Tap another box to see that size.

06 · Deep cold

At −15 °C, it still delivers 63 % of its rated capacity.

Tap a temperature: capacity, efficiency and the cost of one hour of heating.

07 · The bill

At every temperature, cheaper than baseboards.

Cost of one hour at full output, for the same heat delivered. Hydro-Québec Rate D, second tier: 11.142 ¢/kWh.

08 · 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 cooling21.0
Scale 1 – 30Median: 21
Rank 18 (tied) of 86 in its class.
HSPF2 · seasonal heating8.6
Scale 1 – 15Median: 9.2
Rank 55 (tied) of 86 in its class.
EER2 · cooling in peak heat10.4
Scale 1 – 20Median: 11.2
Rank 51 (tied) of 82 in its class.
COP at −15 °C1.84
Scale 0 – 4Median: 1.92
Rank 38 (tied) of 73 in its class.
09 · Report card

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

Compared with the 86 multi-zone systems of 42,000 BTU we sell. Weaknesses too, said plainly.

10 · Head-to-head

Against three other brands in its class.

Same rated size, other manufacturers. Pick the opponent.

11 · Multi-zone or wall units

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

This multi-zone3 wall units
On the wall1 outdoor unit3 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.

12 · Installation

What to know before installing a multi-zone system.

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

The outdoor unit, dimensioned

17.3 in
MPD42KCH21S-ODepth 43.4 in
43.1 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 24 A · 220 V
Outdoor unit
Head 1
Head 2
Head 3
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 24 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.
13 · Sound

Published sound levels, on one scale.

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

29
45
61
29
62
20 dB(A)3040506070
29 Reference head, lowest speed45 Reference head, highest speed29 Class indoor median61 Outdoor unit62 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.
14 · 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)42,000 BTU · 3,5 tonsSheet
SEER2 (seasonal cooling efficiency)21.0AHRI
EER2 (instant cooling efficiency)10.4AHRI
HSPF2 (seasonal heating efficiency, region IV)8.6AHRI
Dehumidification2.96 pints/hSheet
Heating
Capacity at −8 °C29,000 BTU/hSheet
Capacity at −15 °C26,600 BTU/h · COP 1.84Sheet
Heats down to−20 °CSheet
Zones and heads
Zones on this product3 Zones (Triple Zone)Sheet
Maximum zones5 ZonesSheet
Possible indoor modelsOCD09KCH23S-I, OCD12KCH22S-I, OCD18KCH20S-I, OCD24KCH20S-ISheet
Combinations offered12 · 9+9+9 … 12 + 18 + 18Sheet
Indoor dimensions (W × D × H)33.25 × 8.25 × 11.38 inSheet
Vertical louversManualSheet
Horizontal louversAutoSheet
Airflow (reference head)400 CFMSheet
Indoor sound (reference head)29 – 45 dB(A)Sheet
Installation
Outdoor unit (W × D × H)43.1 x 43.4 x 17.3 inSheet
Line sizes1/4 - 3/8 inSheet
Outdoor sound61 dB(A)Sheet
Electrical
Voltage220 VSheet
MCA (minimum circuit ampacity)24 ASheet
MOP (maximum overcurrent protection)35 ASheet
RefrigerantR-410ASheet
Wi-FiNoSheet
Certifications and warranty
AHRI202110506AHRI
Warranty (compressor · parts · labour)10 yrs · 10 yrs · 0 yrsSheet
AirGreen extended warrantyPossibleSheet
15 · Official brochures

The manufacturer’s documentation, as PDF.

16 · Description

Everything we have written about this system.

ACD - MPD Heat Pump | 3 Heads - 42,000 BTU Compressor | Montreal, Laval, Longueuil, South Shore & North Shore

An Unmatched Comfort Solution for Your Home

In a world where domestic comfort has become an absolute priority, the Wall-Mounted 3-Zone ACD-MPD Heat Pump emerges as the ideal solution to maintain a perfect room temperature in your home. At AirGreen, we are proud to offer you this revolutionary product, specifically designed to meet the needs of residents in Montreal, Laval, Longueuil, as well as the South Shore and North Shore regions.

Exceptional Capacities and Performance

The ACD-MPD Heat Pump is equipped with a compressor of 42,000 BTU, capable of providing cooling and heating capacity suited for extreme weather conditions, going down to -20°C. Thanks to its cutting-edge technology, it can easily serve up to three zones simultaneously, with the possibility of extending to five zones, thus offering unmatched flexibility for your comfort.

Advanced Technical Features

  • Cooling Capacity: 42,000 BTU
  • Heating Capacity: Down to -20°C
  • Zones: Adaptable for 3 to 5 zones
  • Exterior Dimensions: 43.1x43.4x17.3 cm
  • Subsidies: Up to $5,000 in federal and provincial aids
  • Energy Efficiency: 21.0 SEER, for maximum efficiency

Additional Advantages

Beyond its exceptional performance, the Wall-Mounted 3-Zone Heat Pump offers a multitude of features designed to enhance your user experience:

  • Low Voltage Start-Up and LED Display: For easy and intuitive use.
  • Self-Diagnosis: Simplifies maintenance and problem detection.
  • Vertical Swing and Turbo Mode: Ensure even air distribution.
  • Washable Filters: Guarantee clean and healthy air.

Professional Installation and After-Sales Service

At AirGreen, we do not just sell high-quality equipment; we also ensure that its installation is carried out by certified professionals. Our team of experts will take care of installing your heat pump with precision, thus guaranteeing its optimal functioning. Moreover, we offer competitive warranties on the compressor, parts, and labor, as well as the possibility of an additional warranty for total peace of mind.

Why Choose the ACD-MPD Heat Pump?

  • Versatility and Adaptability: Perfectly suits multi-zone homes.
  • Energy Efficiency: Significantly reduces your electricity bills.
  • Customized Comfort: Each zone can be adjusted according to your preferences.
  • Attractive Subsidies: Take advantage of financial aids for your installation.

Conclusion

Opting for the Wall-Mounted 3-Zone ACD-MPD Heat Pump from AirGreen means choosing a heating and cooling solution that is efficient, economical, and eco-friendly. Whether you live in Montreal, Laval, Longueuil, on the South Shore, or the North Shore, our team is ready to support you in your project, from initial advice to complete installation.

To learn more about our services and how this heat pump can transform your domestic comfort, contact us today. With AirGreen, ensure a cozy winter and a cool summer, all while controlling your energy consumption.

17 · 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.

What happens when every room calls for heat?

They share the outdoor unit’s capacity: 29,000 BTU/h at −8 °C, 26,600 at −15 °C.

How many heads can I connect?

Up to 5 on this outdoor unit. This product is configured for 3 heads.

Can I mix head sizes?

Yes. The “Zones” menu offers 12 combinations, from 9+9+9 to 12 + 18 + 18 (in thousands of BTU). Each head is sized for its room.

Down to what temperature does it heat?

Down to −20 °C.

Is it noisy?

Indoors, the reference head goes down to 29 dB(A). Outdoors, 61 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; labour is not included by the manufacturer. AirGreen extended warranty: possible.

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.