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dubbll models and specifications.

Three models, one compact through-the-wall design. Specifications, drawings, installation guidance and documents for all three, in one place.

Cooling
3,000 to 12,000 Btu/h
Efficiency
SEER2 16
Heating
to -15°C lower limit
Sound
32 to 46 dBA

Models

Three models.
One difference: power and backup heat.

Choose by the circuit available, then by how much backup heat the space needs. Core figures are below; the 2026 technical flyer carries every specification for all three.

Download technical flyerPDF · 2.7 MB
Cooling
3,000 to 12,000 Btu/h
Efficiency
SEER2 16
Heating
to -15°C lower limit
Sound
32 to 46 dBA
At a glanceDDHPA-10X-00EPlug-in 115V · no electric heatDDHPA-12Y-10E1 kW boost 230V · 1 kW electric heat boostDDHPA-12Y-20E2 kW boost 230V · 2 kW electric heat boost
PowerDiffers115V, on an LCDI cord with a NEMA 5-20P plugBoth 230V models230V
Electric heatDiffersNone1 kW electric heat boost2 kW electric heat boost
ElectricalDiffersMCA 14 A · breaker 15 A · MOCP 20 AMCA 15 A · breaker 20 A · MOCP 23 AMCA 22 A · breaker 25 A · MOCP 27 A
Choose it forA standard 115V circuit, with heating within the heat pump rangeBackup heat for colder conditionsTwice the backup heat, for deep cold
CoolingAll three models10,000 Btu/h nominal (range 3,000 to 12,000 Btu/h)
Heating at 8.3°C (47°F)All three models9,000 Btu/h nominal (range 3,000 to 12,000 Btu/h)
Heating at -8.3°C (17°F)All three models6,500 Btu/h, COP 2.2
Heating at -15°C (5°F)All three models5,000 Btu/h, COP 1.6, before any electric boost
EfficiencyAll three modelsSEER2 16 · CEER 12.26 · HSPF2 7.5
Operating rangeAll three modelsHeating -15°C to +24°C · cooling 0°C to +45°C
SoundAll three models32 to 46 dBA · STC 37 · OITC 28
RefrigerantAll three modelsR-32, 19.4 oz (550 g), factory charged
InstallAll three modelsThrough the wall on two 8" (203 mm) openings, 20 mm (4/5") drain line with factory drain pan heater
Size and weightAll three models39.4" W x 23.1" H x 8.07" D (100 x 59 x 20.5 cm), 93.5 lb (42.4 kg)
CertificationAll three modelsETL listed (Intertek) to UL 60335-2-40, rated to AHRI 210/240
WarrantyAll three models5 years parts and labour, 7 years compressorSubject to applicable warranty terms, eligibility and exclusions. Confirm current coverage with Cool Estate.
Request pricing for the DDHPA-10X-00E

DDHPA-10X-00E downloads

Technical flyer (all three)PDF · 2.7 MB115V IOM manualPDF · 1.9 MB
Request pricing for the DDHPA-12Y-10E

DDHPA-12Y-10E downloads

Technical flyer (all three)PDF · 2.7 MB230V IOM manualPDF · 5.9 MB
Request pricing for the DDHPA-12Y-20E

DDHPA-12Y-20E downloads

Technical flyer (all three)PDF · 2.7 MB

2 kW IOM manualComing soon

All three heat and cool with the same heat pump. The two 230V models add an electric heat boost, 1 kW or 2 kW, on top of it. Core figures are shown here; every specification, including the figures that vary by voltage, is in the 2026 technical flyer.

Operating range

One unit, through winter and summer, within its range.

dubbll is specified for Canadian conditions, operating from -15°C to +45°C so one unit can heat in winter and cool in summer within that range. Heating capacity steps down as the outdoor temperature falls.

Operating range, outdoor temperature

Heating
-15°C+24°C
Cooling
0°C+45°C
Heating at 8.3°C
9,000 Btu/h
at -8.3°C
6,500 Btu/h
at -15°C
5,000 Btu/h

The unit

Everything behind one front panel.

The whole refrigerant circuit sits inside the cabinet. From the room you see a slim unit, a louvre and a large front display.

dubbll monoblock heat pump, front view
  1. Room air inDrawn in through the grille along the top of the cabinet.
  2. Conditioned air outDelivered back to the room through the front louvre.
  3. Front display and controlsA large front-facing LCD display, with WiFi control through the Smart Life app.
  4. Size and weight39.4" W x 23.1" H x 8.07" D (100 x 59 x 20.5 cm), 93.5 lb (42.4 kg).

Why monoblock

Two systems, seen from above.

Seen from above, through the wall. A mini-split divides the system between an indoor head and an outdoor condenser. dubbll keeps the refrigerant circuit in one factory-sealed indoor unit, with separate intake and discharge openings through the exterior wall.

Two piecesTypical mini-split
Typical mini-split, seen in planPlan view through an exterior wall. Inside, an indoor head sits on the wall. A refrigerant lineset runs from it through a sleeve in the wall to an outdoor condenser sitting outside on its own pad.OUTSIDEINSIDEIndoor headOutdoor condenserRefrigerantlinesetTWO UNITS, JOINED ON SITE
Outside the building
An outdoor condenser
Refrigerant on site
A lineset, brazed and charged by a certified technician
Through the wall
One lineset sleeve
One piecemonoblock
dubbll monoblock, seen in planPlan view through an exterior wall. Inside, one self-contained dubbll unit sits against the wall. Two separate ducts pass through the wall: outside air comes in through one and air goes back out through the other. There is no outdoor condenser and no refrigerant lineset.OUTSIDEINSIDEAir outOutside air inNO CONDENSERNO LINESETdubbll, one unit indoorsTWO 8 IN (203 MM) OPENINGS
Outside the building
Two vent covers. No condenser
Refrigerant on site
None. Sealed and charged at the factory
Through the wall
Two 8" (203 mm) openings, one for each air path

Concept drawings, not to scale. Choose a monoblock when there is nowhere to put a condenser or when you do not want refrigerant work on site; choose a mini-split when you need more capacity than a single monoblock delivers, or several indoor heads on one outdoor unit.

The install

Two openings, one rail, one drain.

Three views of the same install: through the wall, from outside and from inside. They are drawn from the installation manual to show the idea. The manual and the supplied wall template control the actual install.

Section through the wallSide section through an exterior wall. The dubbll unit hangs on a rail against the inside face. Its ducts pass through the wall and fall at least 5 degrees to the outside, finishing at an exterior cover. Room air is drawn in at the top of the unit and conditioned air leaves from the front louvre. A drain line leaves the base and also falls to the outside, ending at an open space or drain. Rated performance assumes a wall up to 240 mm thick.INSIDEOUTSIDEMin 5° fallto the outsideROOM AIR INCONDITIONEDAIR TO ROOMDrain line,to open spaceor drainWall up to240 mm (9½ in)dubbll on itshanging rail
01 · Through the wallBoth ducts fall at least 5° to the outside, and the drain line leaves from the base. Rated performance assumes a wall up to 240 mm (9½ in).
Outside: the wall faceThe exterior wall seen from outside. Two round vent covers sit side by side over the unit position: outside air is drawn in through the left cover and air is returned outside through the right cover. A small drain outlet sits low on the left. Nothing else is fixed outside.OUTSIDE · WALL FACEUNIT BEHIND THE WALLAir inAir outDrain outlet8 IN (203 MM) EACH
02 · From outsideTwo vent covers, one drawing outside air in (left) and one sending it back out (right). Nothing else to site.
Inside: the wall faceThe inside wall face. The dubbll unit outline sits over two 8 inch openings, air out on the left and air in on the right, with a small drain hole low on the right. A hanging rail runs across the top of the unit. A clearance zone surrounds the unit: at least 20 cm above and 10 cm at the sides and base. Positions come from the supplied wall template.INSIDE · WALL FACEAIR OUTAIR INHANGING RAIL20 cm (8 in)10 cm (4 in) sides and basePOSITIONS FROM THE SUPPLIED TEMPLATE
03 · From insideThe unit hangs on a rail over both openings, with at least 20 cm (8 in) clear above and 10 cm (4 in) at the sides and base. Seen from inside, the sides swap.
  1. Two 8" (203 mm) openings through an exterior wall, for intake and discharge. That wall needs clear outside air, so light wells, patios, balconies and upper floors are all fine.
  2. No outdoor unit, no linesets, no brazing. The sealed R-32 circuit is charged at the factory (19.4 oz, 550 g), so there is no brazing, evacuation or charging on site.
  3. Electrical supply: 115V or 230V depending on the model. MCA, breaker size and MOCP are listed with each model under Models.
  4. Condensate: a 20 mm (4/5") drain line, with a factory-fitted drain pan heater for winter operation. Plan the route before cutting.
  5. Exterior trim: the through-wall ducts are cut to length so the exterior trim sits neatly against the wall face.
Watch the installation videoOpens on Vimeo

Downloads

The documents for the job.

The 2026 technical flyer covers all three models. Installation and operating manuals are listed by model.

FlyerTechnical flyer 2026All three modelsPDF · 2.7 MBSpecificationOverview specification sheetDDHPA-10X-00E and DDHPA-12Y-10EPDF · 1.2 MBIOM manual115V IOM manualDDHPA-10X-00EPDF · 1.9 MBIOM manual230V IOM manual, 1 kWDDHPA-12Y-10EPDF · 5.9 MB
IOM manual230V IOM manual, 2 kWDDHPA-12Y-20EComing soon

Technical FAQ

Install, controls and cold weather.

How is it installed?

Through the wall, on two 8-inch openings, a mounting rail, an electrical supply and a condensate drain, with no linesets. That makes it a quick fit for apartments, homes, offices and cottages.

Can I control it from my phone?

Yes. dubbll connects to the Smart Life app over WiFi, with sleep and timer modes, variable-speed fans, dehumidification and a large LCD display.

How cold can dubbll work in?

It operates from -15°C to +45°C, heating in winter and cooling in summer. -15°C is the lower operating limit, so for colder conditions see the last question below.

What happens below -15°C?

-15°C is the lower operating limit for heat pump operation. For colder conditions, specify one of the 230V models: the DDHPA-12Y-10E with a 1 kW electric heat boost, or the DDHPA-12Y-20E with 2 kW.

Buying questions, the warranty and how dubbll compares with a mini-split are on the dubbll overview.

Price it for the job.

Get specs, pricing and your nearest stocking wholesaler from the Cool Estate sales team.

Request pricing Back to the dubbll overview

Diagram

Shown larger than your screen. Scroll sideways to see the whole drawing, or turn your phone.

Concept illustration. The installation manual and the supplied wall template control the actual install.