DETTSON Suprême Avantage SUP23-A240V12 Electric Furnace | 23 kW - 240V

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The 23 kW Dettson Suprême Avantage electric furnace with a 1/2 HP ECM motor whose airflow adjusts for heating and cooling.

Model numberSUP23-A240V12

23 kWat 240 V (17.3 kW at 208 V)
ECM 1/2 HP2.3 A at 240 V
3 tonsmaximum cooling
240/208 V · 2-wireECM motorECM motor 5-year warranty (Dettson)
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514 316-2973 · sales@airgreen.ca

Quick facts

Model numberSUP23-A240V12
ManufacturerDettson
SeriesSuprême Avantage (ECM)
Output23 kW (240 V) · 17.3 kW (208 V)
MotorECM, 1/2 HP
Max. cooling3 tons
Max. breaker125 A (240 V and 208 V)

The comfort of an ECM blower in a 23 kW electric furnace

An ECM motor adjusted by season

The Dettson Suprême Avantage SUP23-A240V12 builds on the base of the Avantage series, with electric elements that come on in sequence, quietly, and front-panel controls, but its blower is driven by a 1/2 HP ECM motor. With this motor, airflow is set separately for heating and cooling. Dettson publishes a current of 2.3 A at 240 V for the motor, and a 5-year warranty on the ECM motor.

The furnace delivers 23 kW at 240 V and 17.3 kW at 208 V. It connects on 2-wire 240/208 V; a 3-wire connection for 120–208/240 V is possible with accessories.

Which home it suits

It suits a bungalow or semi-detached home that already has ductwork, where the calculation confirms a heating need of this size and cooling stays reasonable: Dettson accepts a coil of up to 3 tons, on the supply or return side. It is also a good choice for a plex unit with its own duct system. Its multi-position design, approved for zero clearance, lets it go in the basement, in a mechanical closet or horizontal, suspended if needed.

Limits to know about

With a heat pump, Dettson makes non-simultaneous operation mandatory: the elements and the heat pump never heat at the same time. The thermostat must offer this function, otherwise a manufacturer accessory is added. On the electrical side, total current reaches 98.8 A at 240 V and the maximum breaker is 125 A, at 240 V as at 208 V: a dedicated circuit is needed, and panel capacity must be confirmed. Finally, an electric furnace sold alone is not a heat pump and does not qualify for the LogisVert grant.

What AirGreen takes care of

AirGreen is a family business established in Montreal for more than fifteen years, holding RBQ licence 5645-9605-01 for ventilation, refrigeration and electrical work. Your project follows these steps:

  • visit and free on-site estimate, with a heating calculation and a look at the electrical panel;
  • written quote, which specifies the thermostat chosen if a heat pump is planned;
  • installation, connection to the ducts and electrical connection;
  • setting the ECM motor airflow for heating and, where applicable, for cooling;
  • checking the temperature rise, published at 60°F at 240 V, then explaining the controls.

Dettson covers parts for 5 years in residential use (1 year in commercial use); labour is not covered by the manufacturer.

Next step

In Montreal, Laval, Longueuil, the North Shore and the South Shore, ask for your free estimate. You receive a written quote and can take advantage of our financing.

01 · What it is for

An electric furnace with an ECM blower

The SUP23-A240V12 keeps the elements and front-panel controls of the Avantage series, but its blower is driven by a 1/2 HP ECM motor whose airflow is set separately for heating and cooling.

  • Replacing an electric furnace and moving to an ECM blower
  • Homes with central air conditioning up to 3 tons
  • Pairing with a heat pump, alternating with the elements
  • Bungalows, semi-detached homes and plex units with ductwork
Airflow adjusted by seasonThe ECM motor lets airflow be adjusted for heating and for cooling.
2.3 A at the motorThe ECM motor current Dettson publishes at 240 V (2.7 A at 208 V).
ECM motor warrantyDettson lists 5 years on the ECM motor, in addition to 5 years on parts in residential use.
02 · Specifications

Specifications

From the manufacturer’s documentation. A value the manufacturer does not publish is not listed.

ManufacturerDettson
SeriesSuprême Avantage, ECM motor
TypeElectric furnace with elements, multi-position
Output at 240 V23 kW
Output at 208 V17.3 kW (58,944 BTU/h)
First-stage output13 kW (240 V) · 9.8 kW (208 V)
Power supply240/208 V, single phase, 60 Hz, 2-wire (3-wire possible for 120–208/240 V, with accessories)
Total current98.8 A (240 V) · 86.3 A (208 V)
Element current96.5 A (240 V) · 83.6 A (208 V)
Motor current2.3 A (240 V) · 2.7 A (208 V)
Ampacity119.3 A (240 V) · 104.5 A (208 V)
Maximum breaker125 A (240 V) · 125 A (208 V)
MotorECM, 1/2 HP, adjustable airflow for heating and cooling
Blower wheel12 x 8
Maximum cooling3 tons
Temperature rise60°F (240 V)
Front-panel controlsContinuous-fan switch, low/high power switch, heat-demand light, breakers
Heat pumpCoil on supply or return; non-simultaneous operation of elements and heat pump mandatory
ConfigurationUpflow (factory setting), downflow (DFB-SUP base on a combustible floor), horizontal left or right; suspended installation allowed
Approved forZero clearance, mobile homes, copper or aluminum wire
Height36 1/2 in (927 mm)
Depth22 in (559 mm)
Supply opening20 x 20 in (508 x 508 mm)
Filter1 filter, 20 x 20 in
Weight105 lb (48 kg)
Manufacturer warrantyParts 5 years (residential) · 1 year (commercial); ECM motor 5 years; labour not covered
Model numberSUP23-A240V12
03 · Before installing

What to know before installing

  • Sold alone, an electric furnace is not a heat pump: it does not qualify for the LogisVert grant.
  • Total current of 98.8 A at 240 V (86.3 A at 208 V), ampacity of 119.3 A (104.5 A at 208 V), 125 A maximum breaker on a dedicated circuit.
  • Maximum cooling of 3 tons; coil on the supply or return side.
  • With a heat pump, non-simultaneous operation of the elements and the heat pump is mandatory: the chosen thermostat must support it, otherwise an accessory is required.
  • Dettson publishes a temperature rise of 60°F at 240 V; we check it at commissioning.
04 · Documents

Manufacturer documents

05 · See also

Explore the range

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06 · Questions

Frequently asked questions

What does the ECM motor bring to this furnace?

It lets the airflow be adjusted separately for heating and for cooling. Dettson lists a current of 2.3 A at 240 V for this 1/2 HP motor.

Can I add air conditioning?

Yes, with a coil on the supply or return side, up to 3 tons according to Dettson.

How does it work with a heat pump?

The elements and the heat pump must never heat at the same time: Dettson makes this non-simultaneous operation mandatory. The thermostat must offer this function, otherwise a manufacturer accessory is added. We choose the right setup with you.

What is the warranty?

Dettson covers parts for 5 years in residential use (1 year in commercial use) and the ECM motor for 5 years. Labour is not covered by the manufacturer.

Does it qualify for LogisVert?

No. Sold alone, an electric furnace is not a heat pump and does not qualify.

AirGreen · Montréal, Laval, Longueuil, South Shore, North Shore

A 23 kW Suprême Avantage ECM, installed by AirGreen

Tell us about your project: we check the sizing, confirm availability and send you a quote. Or let our technicians install it for you.

RBQ 5645-9605-01Ventilation, refrigeration and electrical
Free estimateon site, for any installation
Quote in 24 hby phone or email
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Specifications from the manufacturer’s documentation, checked on October 19, 2026.