A Stelpro baseboard heater is a popular choice for homeowners who want quiet, zoned electric heat without the cost of ducting or a central furnace. Stelpro is a Canadian manufacturer well known across North America for durable convection baseboard units, and its heaters are a common sight in additions, basements, bedrooms, and homes in colder climates where supplemental or whole-room electric heat makes sense. Understanding the lineup, how to size a unit, and how it installs helps you get warm rooms without wasted energy.
This guide walks through how these heaters work, the main models, sizing by wattage and room area, thermostat options, installation basics, and realistic operating costs so you can decide whether a Stelpro unit is right for your space.
How Electric Baseboard Heat Works
A baseboard heater is a simple, reliable device. Electricity passes through a heating element inside a finned metal channel. As the element warms, cool air near the floor is drawn in at the bottom, heated, and rises out the top, creating a natural convection loop that circulates warmth through the room. There is no fan and no blower, so the heat is silent aside from occasional expansion ticks. Because each heater has its own thermostat, you heat only the rooms you use, which is the core appeal of the zoned approach.
Popular Stelpro Models
Stelpro offers several baseboard lines aimed at different needs and budgets.
- Stelpro SoftHeat (hydronic): A liquid-filled element that holds heat longer and cycles less, delivering gentler, more even warmth with fewer temperature swings.
- Stelpro standard convection baseboards: The classic finned-element units in various lengths, offered in white and off-white to blend with trim.
- Stelpro Orleans and architectural lines: Slimmer, more finished profiles for living spaces where appearance matters.
Most units come in 120-volt and 240-volt versions. For anything beyond a small room, 240-volt models are preferred because they deliver more heat efficiently on a dedicated circuit.
Sizing by Wattage
Correct sizing is the difference between a cozy room and one that never gets warm. The standard rule of thumb is roughly 10 watts of baseboard heat per square foot of floor area in a reasonably insulated room. Cold climates, poor insulation, large windows, or high ceilings push that number higher.
- 100 sq ft bedroom: about 1,000 watts.
- 150 sq ft room: about 1,500 watts.
- 200 sq ft living space: about 2,000 watts, often split across two heaters.
Baseboard heaters produce roughly 250 watts per linear foot, so a 1,500-watt unit is about 6 feet long. It is often better to use two smaller heaters on different walls, especially under windows, than one long unit, because that spreads warmth more evenly and counters the cold draft from glass.
Thermostats and Controls
How you control a Stelpro heater strongly affects comfort and cost. There are two main approaches. A built-in end thermostat mounts on the heater itself and is the cheapest option, but it senses temperature right at the warm unit, so it is less accurate. A wall-mounted line-voltage thermostat, installed at the room’s midpoint away from the heater, reads the true room temperature and controls comfort far better. Stelpro also sells programmable and smart electronic thermostats that let you set schedules and setback temperatures, which cut costs by lowering heat when a room is empty or everyone is asleep.
Installation Basics
Installing electric baseboard heat is straightforward for an electrician and possible for an experienced DIYer who respects the wiring requirements.
- Run a dedicated circuit sized to the heater load; 240-volt units typically need 20-amp wiring for up to 3,840 watts.
- Mount the heater about one inch off the floor to allow the convection air intake at the bottom.
- Keep the unit under a window when possible to counter the downdraft of cold glass.
- Maintain clearances from furniture, drapes, and outlets; never mount directly below a wall receptacle where cords could drape over the element.
- Wire the thermostat, whether built-in or wall-mounted, per the diagram and local code.
Permits are usually required for the new circuit, and hiring a licensed electrician for the panel connection is the safe choice. Fire clearance and correct circuit sizing are non-negotiable safety points.
Operating Costs
Electric resistance heat converts nearly all its energy to warmth, but electricity is more expensive per unit of heat than natural gas in most regions, so operating cost is the main tradeoff. A 1,500-watt heater running continuously uses 1.5 kilowatt-hours per hour. At the U.S. average of about 16 cents per kilowatt-hour, that is roughly 24 cents an hour, though real usage is lower because the thermostat cycles the unit on and off. Zoning helps a lot: heating only the two or three rooms you occupy avoids paying to warm the whole house. Programmable thermostats and good insulation are the biggest levers for keeping bills reasonable.
SoftHeat Hydronic vs. Standard Convection
Stelpro’s flagship comfort feature is the SoftHeat hydronic line, and understanding how it differs from a standard convection baseboard helps you decide whether the premium is worth it. A standard convection heater warms a dry metal element that heats up and cools down quickly, which means the room temperature swings noticeably as the thermostat cycles the element on and off. The SoftHeat element is sealed and filled with a heat-transfer liquid. The electricity warms the liquid, and the liquid keeps radiating heat even after the element shuts off, so the heater cycles less often and delivers gentler, steadier warmth.
In practice, this means fewer hot-and-cold swings, quieter operation with less expansion ticking, and a more even feel in bedrooms and living spaces where comfort matters most. The tradeoff is a higher purchase price and a slightly slower initial warm-up as the liquid heats. For a bedroom you sleep in nightly, many homeowners find the smoother SoftHeat comfort worth the extra cost, while a garage or workshop is perfectly served by the cheaper standard convection line.
Placement Tips for Even Heat
Where you mount a baseboard heater strongly affects how comfortable a room feels. The classic and best location is along an exterior wall directly beneath a window. Cold air sinking off the window glass creates a downdraft, and placing the heater there means the rising warm air counteracts that cold curtain before it spills across the floor. This single placement decision does more for comfort than almost any other.
- Split the load across two shorter heaters on different walls rather than one long unit for more even coverage.
- Keep furniture, beds, and drapes several inches clear so the convection airflow is not blocked, which both reduces output and creates a fire risk.
- Locate the wall thermostat on an interior wall away from the heater and out of direct drafts so it reads the true room temperature.
Advantages and Limitations
The strengths of a Stelpro baseboard system are silence, simplicity, low upfront cost, precise room-by-room zoning, and no ductwork to install or maintain. The limitations are higher per-unit energy cost than gas heat, and the units take up wall space at floor level. The hydronic SoftHeat line addresses the biggest comfort complaint, temperature swings, by holding heat in a liquid element that keeps radiating after the element cycles off.
Maintenance and Longevity
Baseboard heaters need very little care. Vacuum the fins each fall before heating season to clear dust that can smell as it burns off and to keep airflow unobstructed. Keep furniture and drapes clear of the unit, and check that the heater sits level so convection works properly. With almost no moving parts, a quality Stelpro heater can last 15 to 20 years or more. For homeowners who want dependable, quiet, zoned warmth with a modest upfront investment, a Stelpro baseboard heater remains a proven and practical solution.
