DETTSON Suprême Modulante SUP20-M240V20 Electric Furnace | 20 kW - 240V

Electric heat that adjusts its output instead of switching on and off

A modulating furnace for steady comfort

The Dettson Suprême Modulante SUP20-M240V20 is an electric furnace with elements for homes that have ductwork. Its solid-state control varies element output from 0 to 100%, according to the signal sent by the thermostat. Rather than heating at full power and then stopping, it supplies the heat the house is asking for at that moment. A 1 HP ECM motor moves air through the ducts, and a control interface lets the whole unit be adjusted.

At 20 kW and 240 V, it is aimed at homes whose heat-loss calculation lands at that level. Depending on insulation and the volume to heat, that can be a renovated bungalow, a mid-sized two-storey house or a plex unit with its own ductwork. The right size is always confirmed on site before ordering.

Designed to work with a heat pump

Dettson presents the Suprême Modulante as the base of its Right-Sized® system, paired with its central heat pumps, including the Alizé for modulating cooling. In a communicating system, with the coil on the return side, the heat pump and the elements can heat at the same time. With a 2-stage or modulating heat pump, the furnace takes over automatically using the CALME and FUSION modes. The elements then become the backup heat for the coldest days, and the heat pump does most of the work the rest of the time.

The furnace also accepts Smart Duct® small ducts, a useful option when running large ducts is hard in a finished house. It installs upflow, downflow or horizontal, and it can be suspended. Dettson approves it for zero clearance, mobile homes and copper or aluminum wire.

About the electrical supply

A furnace of this output needs a properly sized dedicated circuit. Dettson lists a total current of 88.0 A at 240 V and a 125 A maximum breaker. In buildings supplied at 208 V, output drops to 15 kW and the maximum breaker to 100 A: we check this before confirming the size, so you do not end up with a furnace that heats less than planned.

What AirGreen’s installation covers

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. We handle the project from start to finish:

• free on-site estimate, checking the heating need, the ductwork and the electrical service;
• detailed written quote;
• removal of the old furnace and placement of the new one in the position that suits the room;
• electrical connection on a dedicated circuit and connection to the ducts;
• installation and setup of a modulating or communicating thermostat;
• commissioning and a walk-through of the interface settings.

Let’s talk about your project

For a home in Montreal, Laval, Longueuil, the North Shore or the South Shore, ask for your free estimate: we give you a written quote and walk you through our financing options.