Floor Heating Thermostat STELPRO STCNP | Montreal, Laval, Longueuil, South Shore and North Shore

One setback a day, and savings without the effort

The simplest way to save with a heated floor is to let it run a little cooler at night. The Stelpro STCNP is built around that idea: a floor heating thermostat that runs on line voltage, with a single programming mode that lowers the temperature automatically once every 24 hours. No complicated schedule to learn, no cluttered screen: one comfort set point, one setback period, and that's it.

Who it's for

The STCNP is a great fit for people who want a warm floor during the day and a cooler one at night, without thinking any more about programming. It works well in secondary bathrooms, powder rooms, entryways, laundry rooms and rental units, where a simple setting makes life easier for the occupants. It also fits into a home heated by electric baseboard heaters or a wall-mounted heat pump, where the heated floor plays a supporting role for comfort.

Electrical compatibility

The thermostat is designed for electric floor heating. It runs on 120, 208 or 240 V and accepts a maximum load of 1920 W at 120 V, 3330 W at 208 V or 3840 W at 240 V. It does not control a furnace, a central heat pump or hydronic heating. It connects with four wires and has a double-pole (DPST) switch that cuts both poles.

Precise control

You choose between floor-based control and room air control. In floor mode, the included 13 ft (4 m) sensor measures the floor temperature, adjustable from 3 to 28 °C (37 to 82 °F). In room mode, the built-in sensor reads the room air, adjustable from 3 to 35 °C (37 to 95 °F). Thermistor sensing provides an accuracy of ±0.5 °C (1 °F). The digital display reads in °C or °F.

Safety and reliability

The STCNP has a built-in GFCI with a test indicator light, essential in damp rooms. Its safety mode locks in a maximum set point, which protects floor coverings and limits misuse in a shared home. Power outage protection keeps the settings for 2 hours, so a brief outage, common during winter storms, does not force you to start over.

Quebec cold and the night setback

During the coldest months, a bathroom's heated floor runs for long stretches every day. A daily setback during sleeping hours reduces the cables' running time without anyone feeling it, since the room is empty. The STCNP applies that setback every day, automatically, so nobody has to remember to turn the set point down at night.

An easy replacement

The STCNP is often chosen to replace an older floor thermostat. Since most existing heated floors already have a sensor embedded under the floor covering, our technicians check it first. If it is in good shape, the thermostat can be swapped without touching the floor. You then gain the automatic daily setback, electronic precision and a GFCI with a test light, with no renovation work.

STCNP or STCP

The STCNP shares its base with the STCP: same power supply, same 13 ft sensor, same GFCI, same precision and same protections. The STCP adds true multiple programming, with up to four periods on weekdays and four on weekends, plus early start. If one setback a day is enough for you, the STCNP is simpler to use and to explain. If the room is used at several separate times of day, the STCP will be more efficient.

Technical specifications

• Systems: electric floor heating
• Power supply: line voltage 120/208/240 V; maximum 1920 W at 120 V, 3330 W at 208 V, 3840 W at 240 V
• Single programming: automatic temperature setback once every 24 hours
• Floor or room air temperature control, your choice
• Setting range: room mode 3 to 35 °C (37 to 95 °F); floor mode 3 to 28 °C (37 to 82 °F)
• Accuracy ±0.5 °C (1 °F), thermistor sensing
• 13 ft (4 m) floor sensor included, plus room sensor
• Built-in GFCI with test indicator light
• Four-wire connection, double-pole (DPST) switch
• Power outage protection (2 hours)
• Safety mode: maximum set point lock
• Digital display, °C or °F
• White moulded plastic housing

Handled by AirGreen, from installation to setup

Installation

Our technicians check the floor load and your electrical system's voltage, then measure the resistance of the cables and the sensor. The thermostat is wired with four wires on a suitable circuit, and the GFCI is tested while you are there. If it is a replacement, we check the existing sensor before keeping it. We then set the control mode, the comfort set point, the setback period and, if you like, a locked maximum set point.

Getting the most out of it

Set the setback period for your sleeping hours, or for the daytime if the room sits empty then. Keep the setback moderate rather than shutting the heat off completely: a slab that cools down too much takes a long time to get back to comfort. If your routine changes, just move the setback period.

Maintenance

Test the GFCI every month with the test button, then reset it. Wipe the housing with a dry cloth. Avoid placing a heating appliance right under the thermostat. If the floor heats abnormally, get in touch with us so we can check the connections and the sensor.

Why AirGreen

AirGreen Inc. is a family-owned Montreal HVAC company, in business for more than 15 years, with an RBQ licence and a showroom in Boucherville. Our technicians install wall-mounted heat pumps, central systems and electric heating solutions, and recommend the thermostat that truly matches how each room is used.

To buy the Stelpro STCNP thermostat and have it professionally installed, contact AirGreen. We work in Montreal, Laval, Longueuil, the North Shore and the South Shore.

Stelpro documents

Stelpro spec sheet (PDF) · Stelpro user guide (PDF)