2-Zone Heat Pump DURASTAR Sirius Heat | 28,000 BTU - R454B

In stock
SKU: DRA4H28M2A
28,000BTU/h · 2 heads
−30 °Cheats down to
$3,480LogisVert, indicative
ENERGY STAR® cold climateENERGY STAR Most EfficientOptional Wi-FiR-454BUp to 4 heads
Talk to a technician · 514 316-2973
Outdoor unit DRA4H28M2APossible indoor models DRAC0912F2A, DRAC18F2A, DRAC24F2A, DRADH0912F2A, DRADH18F2A, DRADH24F2A, DRADL0612F2A, DRADL18F2A, DRAF18F2A, DRAF24F2A, DRAL0612F2A, DRAL18F2A, DRAM18F2A, DRAM24F2A, DRAS09F2A, DRAS12F2A, DRAS16F2AAHRI 215359218· ENERGY STAR 3621113
In short

The Durastar Sirius Heat R454B 28 000 multi-zone heat pump heats and cools 2 rooms with a single outdoor unit. ENERGY STAR cold-climate certified, it delivers 29,000 BTU/h at −8 °C, heats down to −30 °C and qualifies for a $3,480 LogisVert grant. 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, and the most powerful in its class at −8 °C.

Compared with the 12 multi-zone systems of 28,000 BTU we sell. Every number on this page carries its source.

ENERGY STAR Most EfficientNEEP 389543AHRI 215359218LogisVert · October 1, 2026
+29,000 BTU/h at −8 °CRank 1 (tied) of 12. Class median: 23,600 BTU/h.
+HSPF2 10.0Rank 1 (tied) of 12. Class median: 9.5.
+$3,480 LogisVert grantRank 1 (tied) of 10. Class median: $2,952.
!Good to know: SEER2 21.0Rank 10 of 12; class median: 22.6.
29,000BTU/h certified at −8 °C
−30 °Cstill heating
2 → 4heads, on the same unit
2.15COP at −8 °C
$3,480LogisVert, indicative
02 · The machine

The parts that make a multi-zone system.

Tap a part to learn more.

DRA4H28M2A

Outdoor unit

One compressor for the whole house. It supplies up to 4 heads and modulates from 8,400 to 29,000 BTU/h depending on what the rooms call for (NEEP).

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 zones6 zones
18,000BTU
23
28,000BTU
Here34
36,000BTU
2345
48,000BTU
23456
55,000BTU
23456

Durastar Sirius Heat R454B 28 000 · 2 zones

29,000 BTU/h
at −8 °C
$3,480
LogisVert

Up to 4 heads on this outdoor unit. Tap another box to see that size.

06 · Deep cold

At −15 °C, it still delivers 96 % of its rated capacity.

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

It slows down, it speeds up: the certified modulation range

Light bar: from minimum to maximum capacity. Dark mark: the rated value.

+8.3 °C
8,400 → 32,000 BTU/h
-8 °C
6,000 → 29,000 BTU/h
-15 °C
5,400 → 27,000 BTU/h
Source: NEEP, minimum, rated and maximum ratings at 47, 17 and 5 °F.
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: 22.6
Rank 10 (tied) of 12 in its class.
HSPF2 · seasonal heating10.0
Scale 1 – 15Median: 9.5
Rank 1 (tied) of 12 in its class.
EER2 · cooling in peak heat12.0
Scale 1 – 20Median: 12
Rank 6 (tied) of 12 in its class.
COP at −15 °C1.9
Scale 0 – 4Median: 1.9
Rank 6 (tied) of 12 in its class.
ENERGY STAR Most EfficientCold climate · ID 3621113 · ENERGY STAR database
09 · LogisVert grant

A grant you can calculate, not guess.

29,000 BTU/h÷ 1,000 ×$120=$3,480

The capacity at −8 °C comes from Hydro-Québec’s list of October 1, 2026. $120 per 1,000 BTU/h is the rate for ENERGY STAR cold-climate heat pumps (guide v1.10).

Set for this system (AHRI 215359218). Another head combination (ducted, console) can change the AHRI number, and so the amount.
Cap: the grant never exceeds 100 % of the purchase and installation cost before taxes.
9 months after installation to apply; +5 % when two measures are in the same request.
All about LogisVert, with the simulator
10 · Report card

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

Compared with the 12 multi-zone systems of 28,000 BTU we sell, using the LogisVert list figures. Weaknesses too, said plainly.

11 · 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
LogisVert$3,480 for the systemDepends 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

21.81 in
DRA4H28M2ADepth 12.99 in
31.69 in
Dimensions: product sheet (W × D × H).

One circuit for the whole house

Electrical panel
Load calculation before the quote
15 A max. breaker
MCA 15 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 under line covers, no work inside the walls.
05Dedicated circuit220 V, MCA 15 A, 15 A protection. The panel load calculation is done before the quote.
06Commissioning, zone by zoneEach head is tested and the controls set up. Then the LogisVert application within 9 months.
13 · Sound

Published sound levels, on one scale.

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

24
43
55
30
58
20 dB(A)3040506070
24 Reference head, lowest speed43 Reference head, highest speed30 Class indoor median55 Outdoor unit58 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 · What sets it apart

What is particular about this machine.

Only facts published by ENERGY STAR, NEEP or the manufacturer.

Most EfficientENERGY STARAmong the year’s most efficient according to ENERGY STAR, on top of its cold-climate certification.
8,400BTU/h at low speedMinimum certified capacity (NEEP): it slows down instead of stopping when a single room calls.
−30 °CColdest certified pointNEEP still lists 12,000 BTU/h at a COP of 1.10 at −22 °F.
150 WBase pan heaterHeater in the outdoor unit’s base pan, against ice (NEEP).
15 · 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)28,000 BTUSheet
Certified cooling at 35 °C27,000 BTU/hNEEP
SEER2 (seasonal cooling efficiency)21.0AHRI
EER2 (instant cooling efficiency)12.0AHRI
HSPF2 (seasonal heating efficiency, region IV)10.0AHRI
HSPF2, region V (coldest)8.1NEEP
Heating
Capacity at +8.3 °C27,000 BTU/h · COP 3.6NEEP
Capacity at −8 °C29,000 BTU/h · COP 2.15NEEP
Capacity at −15 °C27,000 BTU/h · COP 1.9NEEP
Capacity at -30 °C (max.)12,000 BTU/h · COP 1.1Sheet
Modulation range8,400 – 29,000 BTU/hNEEP
Heats down to−30 °CSheet
Zones and heads
Zones on this product2 Zones (Dual Zone)Sheet
Maximum zones4 Zones (Quad Zone)Sheet
Possible indoor modelsDRAC0912F2A, DRAC18F2A, DRAC24F2A, DRADH0912F2A, DRADH18F2A, DRADH24F2A, DRADL0612F2A, DRADL18F2A, DRAF18F2A, DRAF24F2A, DRAL0612F2A, DRAL18F2A, DRAM18F2A, DRAM24F2A, DRAS09F2A, DRAS12F2A, DRAS16F2ASheet
Indoor dimensions (W × D × H)22.44 x 22.44 x 9.65 inSheet
Vertical louversAutoSheet
Horizontal louversManuel / ManualSheet
Airflow (reference head)418 CFMSheet
Indoor sound (reference head)24 – 43 dB(A)Sheet
Installation
Outdoor unit (W × D × H)31.69 x 12.99 x 21.81 inSheet
Outdoor sound55 dB(A)Sheet
Base pan heater150 WNEEP
Electrical
Voltage220 VSheet
MCA (minimum circuit ampacity)15 ASheet
MOP (maximum overcurrent protection)15 ASheet
RefrigerantR-454BSheet
Wi-FiOptionalSheet
Certifications and warranty
AHRI215359218AHRI
ENERGY STARYes · cold climate · ID 3621113ENERGY STAR
ENERGY STAR Most EfficientYesENERGY STAR
LogisVert grant (indicative)$3,480LogisVert
Warranty (compressor · parts · labour)10 yrs · 10 yrs · 6 yrsSheet
AirGreen extended warrantyPossibleSheet
16 · Official brochures

The manufacturer’s documentation, as PDF.

17 · Description

Everything we have written about this system.

Calculer la charge d'un condo vitré avant de retenir un format de 28 000 BTU

Certains logements n'ont pas trop de fenêtres, sauf d'un seul côté où ils en ont beaucoup trop. Dans un condo de deux chambres sans balcon arrière, cette pièce vitrée devient une serre en juillet et une passoire en janvier, et aucun réglage de thermostat ne corrige un déséquilibre de cette nature. À Montréal, la première chose à faire n'est pas de choisir un appareil mais de calculer ce que le bâtiment demande réellement. La Thermopompe 2-Zones DURASTAR Sirius Heat | 28 000 BTU - R454B entre en jeu une fois ce calcul posé.

Ce que mesure le certificat

  • Rendement saisonnier : 21,0 SEER2, 12,0 EER2 et 10,0 HSPF2
  • À -8 °C : 29 000 BTU/h, COP de 2,15
  • À -15 °C : 27 000 BTU/h, COP de 1,90
  • À -30 °C : 12 000 BTU/h, COP de 1,10
  • Homologation ENERGY STAR, ID ENERGY STAR 3621113, désignation climat froid, chauffage jusqu'à -30 °C

À -8 °C, l'ensemble inscrit 29 000 BTU/h, soit davantage que sa capacité nominale. C'est la marge qui permet à la pièce vitrée de garder sa consigne un matin de janvier sans que la seconde zone en pâtisse. Ces valeurs proviennent du certificat AHRI 215359218, publié par le NEEP.

La charge réelle d'un condo de deux chambres

Le repère maison est d'environ 18 000 BTU/h par 1 000 pieds carrés, corrigé selon l'isolation, la fenestration, la hauteur des plafonds et l'ouverture entre les pièces. Les 28 000 BTU/h du condenseur DRA4H28M2A se répartissent ensuite entre les deux têtes, et fermer la zone des chambres le jour n'interrompt pas celle de l'aire de vie. Les têtes se prennent parmi DRAS09F2A, DRAS16F2A, DRAC18F2A, DRAM24F2A, DRAF18F2A, DRADL0612F2A et les autres modèles publiés ; le châssis accepte jusqu'à 4 zones.

La subvention LogisVert de 3 480 $

Le programme LogisVert accorde 3 480 $ à cet ensemble pour un propriétaire d'une habitation existante, sous l'ID ENERGY STAR 3621113. Le montant dépend de la liste en vigueur à la date d'installation, et une aide bonifiée s'applique à certains immeubles à logements multiples. Nous validons l'admissibilité avant la signature et préparons les pièces du dossier.

Les délais d'une pose en condo, de l'accord du syndicat à la mise en route

Ce qui prend du temps

Le chantier lui-même est court ; c'est l'autorisation qui commande le calendrier. Un syndicat se réunit selon son propre rythme, et une demande incomplète repart pour un tour. Nous préparons le dossier avec l'emplacement du condenseur, son gabarit de 31,69 x 12,99 x 21,81 pouces, sa cote de 55 dB(A) et le tracé des lignes.

Les deux têtes et les lignes

Chaque tête reçoit sa paire de lignes frigorifiques, son drain et son câble de commande, tous ramenés au même condenseur, posé au-dessus de la ligne de neige et à distance des fenêtres de chambre, y compris celles des voisins. Nos installations sont entièrement apparentes, sans travaux à l'intérieur des murs, avec un recouvrement de finition sur les parties communes visibles.

Le circuit de 15 A et les réactions normales

L'alimentation demande 220 V, un MCA de 15 A, un disjoncteur de 15 A et un circuit dédié, ce qui reste modeste pour un panneau de condo. Le calcul de charge précède la proposition. Ensuite, quelques comportements sont attendus.

  • De la vapeur blanche s'échappe du condenseur pendant le dégivrage.
  • Un délai de trois minutes au redémarrage protège le compresseur.
  • Le boîtier des têtes craque quand la température de l'appareil varie vite.
  • Le chauffage s'arrête sous -30 °C.

Une odeur de brûlé, un disjoncteur qui saute, un code d'erreur persistant ou de l'eau à l'intérieur imposent d'arrêter l'appareil et de faire appel à notre service de réparation.

AirGreen, du relevé au financement

Les filtres se rincent aux deux semaines et un entretien CVAC annuel couvre serpentins, condensat et raccords électriques. AirGreen est une entreprise familiale active depuis plus de quinze ans à Montréal, Laval, Longueuil, sur la Rive-Nord et sur la Rive-Sud, avec les licences RBQ en ventilation, en réfrigération et en électricité. L'évaluation est gratuite, la soumission est écrite, et des options de financement permettent d'étaler le solde après subvention.

Demandez votre estimation gratuite pour la Thermopompe 2-Zones DURASTAR Sirius Heat | 28 000 BTU - R454B. Nous calculons la charge de la pièce vitrée, préparons le dossier du syndicat avec la cote de 55 dB(A) et confirmons le montant LogisVert de 3 480 $.

Garantie : 10 ans sur le compresseur, 10 ans sur les pièces et 6 ans sur la main-d’œuvre, directement du distributeur.

18 · 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, 27,000 at −15 °C.

How many heads can I connect?

Up to 4 on this outdoor unit. This product is configured for 2 heads.

How much is the LogisVert grant?

$3,480 according to Hydro-Québec’s list of October 1, 2026. The grant never exceeds 100 % of the cost before taxes; apply within 9 months of installation.

Is it ENERGY STAR certified?

Yes, cold climate, ID 3621113. It also meets the ENERGY STAR Most Efficient criteria, according to the ENERGY STAR database.

Down to what temperature does it heat?

Down to −30 °C.

Is it noisy?

Indoors, the reference head goes down to 24 dB(A). Outdoors, 55 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: 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
LogisVert : $3,480AHRI 215359218 checked against the list of October 1, 2026
Beware of scamsHydro-Québec does no phone or door-to-door solicitation for LogisVert
Sources checked on October 1, 2026.NEEP, Cold Climate Air Source Heat Pump List, product 389543 (AHRI 215359218): capacities and COP, modulation, SEER2, EER2, HSPF2.ENERGY STAR certified heat pump database, ID 3621113.Hydro-Québec, LogisVert eligible heat pump list (owner, existing home), file of October 1, 2026; participation guide, version 1.10.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.