STELPRO SFECM SFECM23211HP Electric Furnace | 22.5 kW - 240V

22.5 kW and a 1 HP ECM motor: the most complete version in the series at this output

Four 22.5 kW versions: how to tell them apart

Stelpro offers four 22.5 kW furnaces in the SFE family. They share the same output and the same modulating electronic board, but differ in the motor:

• SFE2321: 1/3 HP motor with preset speeds;
• SFE23211HP: 1 HP motor with preset speeds, for more air;
• SFECM2321: 1/2 HP variable-speed ECM motor;
• SFECM23211HP: 1 HP variable-speed ECM motor, the model on this page.

The SFECM23211HP therefore combines the airflow of a 1 HP motor with the flexibility of an ECM motor, which Stelpro highlights for constant airflow and better efficiency. 7-position potentiometers set the airflow for each mode. The 23 in the model number is a code: the published output is 22.5 kW at 240 V.

Which type of home it suits

It is aimed at large homes whose heat loss calculation comes to 22.5 kW and whose ductwork is long or highly branched: a cottage in Longueuil with a finished basement and a full upper floor, for example, or a home getting a central heat pump whose coil needs high airflow. Before ordering, we confirm the airflow ranges specific to this code from Stelpro’s documentation.

Heat pump, cooling and air quality

In Type A, the factory setting, the heat pump is downstream and the elements stay off during its call. In Type B, it is on the return side and the furnace makes up for its loss of capacity in cold weather. The board also compensates during defrost. The SFECM’s Y2, air cleaner and humidifier terminals allow two-stage cooling and the connection of indoor air quality accessories.

Electricity and installation

Stelpro publishes a total amperage of 99 A at 240 V and 87 A at 208 V, a voltage at which the output becomes 16.9 kW. The cabinet weighs 48 kg (105 lb). AirGreen, a family business established in Montreal for more than fifteen years and holder of RBQ licence 5645-9605-01 for ventilation, refrigeration and electrical work, checks your electrical service during the free estimate, then gives you a written quote.

Our technicians set the furnace upflow, downflow (FSB2 adapter, sold separately) or horizontal, connect it to the ducts, make the connection according to the manual and the rating plate, then set each airflow. The 20 x 20 x 1 in filter is not supplied.

Let’s review it together

In Montreal, Laval, Longueuil, on the North Shore or the South Shore, ask for your free estimate: we help you choose the right version, give you a written quote and present the financing available.