6-Zone Heat Pump DURASTAR Sirius Heat | 55,000 BTU - R454B

In stock
SKU: DRA6H55M2A
55,000BTU/h · 6 heads
−30 °Cheats down to
$5,760LogisVert, indicative
ENERGY STAR® cold climateENERGY STAR Most EfficientOptional Wi-FiR-454BUp to 6 heads
Talk to a technician · 514 316-2973
Outdoor unit DRA6H55M2APossible indoor models DRAC0912F2A, DRAC18F2A, DRAC24F2A, DRADH0912F2A, DRADH18F2A, DRADH24F2A, DRADL0612F2A, DRADL18F2A, DRAF18F2A, DRAF24F2A, DRAL0612F2A, DRAL18F2A, DRAM18F2A, DRAM24F2A, DRAS09F2A, DRAS12F2A, DRAS16F2AAHRI 215415535· ENERGY STAR 3624607
In short

The Durastar Sirius Heat R454B 55 000 multi-zone heat pump heats and cools 6 rooms with a single outdoor unit. ENERGY STAR cold-climate certified, it delivers 48,000 BTU/h at −8 °C, heats down to −30 °C and qualifies for a $5,760 LogisVert grant. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.

01 · The verdict in 10 seconds

6 rooms, one outdoor unit, and the most powerful in its class at −8 °C.

Compared with the 13 multi-zone systems of 55,000 BTU we sell. Every number on this page carries its source.

ENERGY STAR Most EfficientNEEP 389004AHRI 215415535LogisVert · October 1, 2026
+48,000 BTU/h at −8 °CRank 1 (tied) of 13. Class median: 36,400 BTU/h.
+SEER2 21.4Rank 1 (tied) of 13. Class median: 20.2.
+HSPF2 10.6Rank 1 (tied) of 13. Class median: 9.6.
48,000BTU/h certified at −8 °C
−30 °Cstill heating
6heads
2.6COP at −8 °C
$5,760LogisVert, indicative
02 · The machine

The parts that make a multi-zone system.

Tap a part to learn more.

DRA6H55M2A

Outdoor unit

One compressor for the whole house. It supplies up to 6 heads and modulates from 20,000 to 48,000 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
234
36,000BTU
2345
48,000BTU
23456
55,000BTU
2345Here

Durastar Sirius Heat R454B 55 000 · 6 zones

48,000 BTU/h
at −8 °C
$5,760
LogisVert

Up to 6 heads on this outdoor unit. Tap another box to see that size.

06 · Deep cold

At −15 °C, it still delivers 87 % 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
20,000 → 56,000 BTU/h
-8 °C
18,000 → 48,000 BTU/h
-15 °C
13,000 → 48,000 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 cooling21.4
Scale 1 – 30Median: 20.2
Rank 1 (tied) of 13 in its class.
HSPF2 · seasonal heating10.6
Scale 1 – 15Median: 9.6
Rank 1 (tied) of 13 in its class.
EER2 · cooling in peak heat12.0
Scale 1 – 20Median: 10.5
Rank 1 (tied) of 13 in its class.
COP at −15 °C2.0
Scale 0 – 4Median: 1.8
Rank 1 (tied) of 13 in its class.
ENERGY STAR Most EfficientCold climate · ID 3624607 · ENERGY STAR database
09 · LogisVert grant

A grant you can calculate, not guess.

48,000 BTU/h÷ 1,000 ×$120=$5,760

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 215415535). 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 13 multi-zone systems of 55,000 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-zone6 wall units
On the wall1 outdoor unit6 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$5,760 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
DRA6H55M2ADepth 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
Head 3
Head 4
Head 5
Head 6
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
36
61
20 dB(A)3040506070
24 Reference head, lowest speed43 Reference head, highest speed36 Class indoor median55 Outdoor unit61 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.
20,000BTU/h at low speedMinimum certified capacity (NEEP): it slows down instead of stopping when a single room calls.
−30 °CColdest certified pointNEEP still lists 27,400 BTU/h at a COP of 1.43 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)55,000 BTUSheet
Certified cooling at 35 °C51,000 BTU/hNEEP
SEER2 (seasonal cooling efficiency)21.4AHRI
EER2 (instant cooling efficiency)12.0AHRI
HSPF2 (seasonal heating efficiency, region IV)10.6AHRI
HSPF2, region V (coldest)8.5NEEP
Heating
Capacity at +8.3 °C55,000 BTU/h · COP 3.4NEEP
Capacity at −8 °C48,000 BTU/h · COP 2.6NEEP
Capacity at −15 °C48,000 BTU/h · COP 2.0NEEP
Capacity at -30 °C (max.)27,400 BTU/h · COP 1.43Sheet
Modulation range20,000 – 48,000 BTU/hNEEP
Heats down to−30 °CSheet
Zones and heads
Zones on this product6 ZonesSheet
Maximum zones6 ZonesSheet
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
AHRI215415535AHRI
ENERGY STARYes · cold climate · ID 3624607ENERGY STAR
ENERGY STAR Most EfficientYesENERGY STAR
LogisVert grant (indicative)$5,760LogisVert
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.

Une saison de chauffage qui tient du premier gel jusqu'à -30 °C

Dans une habitation où un loft s'ouvre sur le salon, la période délicate n'est pas janvier : ce sont les semaines de mi-saison, quand l'air chaud monte au loft et laisse le bas frais. Un appareil qui s'arrête dès la consigne atteinte amplifie cet écart. La Thermopompe 6-Zones DURASTAR Sirius Heat | 55 000 BTU - R454B travaille à l'inverse : six zones qui tournent lentement, du premier gel d'octobre jusqu'à la limite de -30 °C.

Ce que la longueur de la saison change au calcul

Un appareil qui ne sert que par grand froid ne rembourse pas grand-chose. Celui-ci prend le chauffage dès que le mercure passe sous la consigne, en octobre comme en avril, aux températures où son rendement est le plus haut. Sur un loft ouvert, ces longues périodes à basse vitesse brassent l'air entre le haut et le bas, et c'est cette circulation qui rend le volume habitable.

Le certificat, du premier gel au grand froid

  • Homologué ENERGY STAR, désignation climat froid
  • Climatisation : 21,4 SEER2 et 12 EER2
  • Chauffage : 10,6 HSPF2, fonctionnement jusqu'à -30 °C
  • À -8 °C : 48 000 BTU/h, COP de 2,6
  • À -15 °C : 48 000 BTU/h, COP de 2
  • À -30 °C : 27 400 BTU/h, COP de 1,43

Le chiffre à retenir est celui du bas de la liste : 27 400 BTU/h encore livrés à -30 °C, soit la moitié de la capacité nominale au moment où le réseau électrique du Québec est le plus sollicité. Une maison correctement isolée y trouve encore sa base de chauffage. Ces données proviennent du certificat AHRI 215415535, publié par le NEEP.

Une aide LogisVert de 5 760 $

Sous l'ID ENERGY STAR 3624607, le système ouvre droit à 5 760 $ pour un propriétaire d'une habitation existante, selon la liste en vigueur à la date d'installation, avec une aide bonifiée pour certains immeubles à logements multiples. Nous validons avant la signature, puis montons le dossier. Nos options de financement couvrent le reste.

Repentigny : un syndicat à consulter et un déménagement déjà inscrit au calendrier

Répartir 55 000 BTU entre six têtes

La capacité annoncée est celle de l'unité extérieure. Nous la répartissons pièce par pièce à partir d'environ 18 000 BTU/h par 1 000 pieds carrés, corrigés selon l'isolation, la fenestration, la hauteur des plafonds et l'ouverture entre les pièces. Un loft ouvert sur le salon compte comme un seul volume, pas comme deux pièces : il reçoit une tête dimensionnée pour l'ensemble plutôt que deux petites qui se contrarieraient.

Fermer une zone sans arrêter les cinq autres

Quand un déménagement est prévu pour l'été suivant, une partie des pièces cesse de servir bien avant le jour du départ. Chaque tête garde sa consigne et sa télécommande : on ferme une chambre, le compresseur réduit son régime, et les autres zones ne bronchent pas. Le même réflexe sert après l'emménagement, quand l'usage des pièces se stabilise.

Les lignes vers chaque tête et l'unité extérieure

Six têtes veulent six parcours de lignes jusqu'à l'unité extérieure, qui mesure 31,69 po sur 12,99 po et 21,81 po de haut, pour 55 dB(A). En copropriété, l'emplacement, le socle au-dessus de la ligne de neige et le tracé apparent se présentent au syndicat avant les travaux. Nos installations restent entièrement apparentes, sans travaux à l'intérieur des murs. La fiche inscrit du 220 V, un MCA de 15 A, un disjoncteur de 15 A et un circuit dédié.

  • Un panache de vapeur au dégivrage, sans odeur
  • Un délai de trois minutes au redémarrage protège le compresseur
  • Les filtres des têtes se nettoient aux deux semaines

Un code d'erreur qui persiste, une odeur de brûlé ou de l'eau sous une tête demandent l'arrêt de l'appareil et un appel à notre service de réparation. L'entretien CVAC annuel couvre serpentins, écoulement du condensat et raccords électriques.

AirGreen, avant comme après un déménagement

Entreprise familiale depuis plus de quinze ans, nous détenons les licences RBQ en ventilation, en réfrigération et en électricité, et portons une assurance responsabilité de 5 000 000 $. L'évaluation à domicile est gratuite, la soumission écrite et sans signature sur place, à Montréal, à Laval, à Longueuil, sur la Rive-Nord et sur la Rive-Sud. Nous calons la date des travaux sur la vôtre, pas l'inverse.

Réservez votre estimation gratuite pour la Thermopompe 6-Zones DURASTAR Sirius Heat | 55 000 BTU - R454B. Nous répartissons la capacité pièce par pièce, préparons le dossier du syndicat et fixons un calendrier compatible avec votre déménagement.

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: 48,000 BTU/h at −8 °C, 48,000 at −15 °C.

How many heads can I connect?

Up to 6 on this outdoor unit. This product is configured for 6 heads.

How much is the LogisVert grant?

$5,760 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 3624607. 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 : $5,760AHRI 215415535 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 389004 (AHRI 215415535): capacities and COP, modulation, SEER2, EER2, HSPF2.ENERGY STAR certified heat pump database, ID 3624607.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.