Among other things, the Americans with Disabilities Act (ADA) ensures access to the built environment for people with disabilities. The ADA Standards establish design requirements for the construction and alteration of facilities subject to the law. These enforceable standards apply to places of public accommodation, commercial facilities, and state and local government facilities.

Air curtain

A powerful device limiting cold air from entering buildings, even when doors and windows are repeatedly opened and shut. The Stelpro SDC Air curtain is a perfect example of this type of product.

Ambient (or Room) temperature

This is the temperature that one feels in a room.


An ampere or amp (represented by the A symbol) is the SI unit that measures the intensity of an electric current.

Anodized finish

Anodizing is a conversion-type surface treatment using anodized oxidation (applying an electrically insulating layer between 5 and 50 micrometres) to protect or decorate a part made of aluminium (or alloy) or titanium (or alloy). It makes materials more resistant to wear, corrosion and heat. The thickness of the finish varies according to the intended use of the final product.

Anticipated start

This mode enables the room to reach the selected temperature at the programmed hour. In fact, the thermostat estimates the delay required to reach the set point of the next period at the programmed hour. This delay is obtained by the observation of the temperature variations in the room and the results obtained during the preceding anticipated starts. That way, the results should be increasingly precise day after day.

Architectural baseboard

This convection heater will provide heat its whole length by creating a curtain of warm air. It can span the length of a wall with the available Stelpro accessories.


An audit is a professional examination by a competent and unbiased expert who renders a judgement on the financial state, internal control, organization, process or operation of an entity.

The audit is an ongoing improvement tool, as it takes stock of existing inventory in order to identify weak or non-conforming points (according to the audit's guidelines). The results are formally written up in a report, so that the appropriate action can be taken to correct discrepancies and deficiencies.

Automatic reset thermal protection

This protection shuts off a device in case of extreme temperature fluctuations. It automatically resets once the device resumes functioning under normal conditions.



BTU (British Thermal Unit) is the unit that measures the amount of heat required to raise the temperature of a litre of water by one degree Fahrenheit. In heating and air conditioning, BTU indicates the amount of heat that can be given off by a device.

Backup heating

This is a secondary heating system that complements the main one. It's used when more heat is needed in a room.

Bathroom fan heater

A fan heater designed for bathrooms. Very easy to use, this device has two control buttons: one adjusts the integrated thermostat, and the other activates the timer. Stelpro offers several types of fan heaters to satisfy all its clients' needs, including the SIL2030 and SILBH2060, both part of the Silhouette family of products.

Bipolar thermostat

A thermostat with two poles.


This is the property of something that has two poles.


In heat transfer, a blade increases heat exchanges. Certain Stelpro heating elements have blades.


Diverts a circuit in order to modify the movement of air or fluid in a pump, in such a way as to obtain more operating lines, or to more easily replace installation elements (pump, filter, etc.).



Cubic Feet per Minute. Manufacturers use this unit to measure the air flow generated by their appliances.


The Canadian Standards Association is a non-profit organization that compiles and issues standards in Canada. The CSA abbreviation is used in both English and French. All Stelpro products conform to these strict norms.

Cable clamp

A device that clasps a cable loop.

Ceiling fan heater

A ceiling fan heater is a very powerful device combining convection and forced air. This heater is installed on the ceiling and uses natural convection to produce heat, but it also contains a powerful fan that propels this heat towards the floor. In fact, the ceiling fan heater recycles heat that rises to the ceiling and constantly re-directs it towards the floor. The Stelpro Spider (SGH) is one of the most popular types of ceiling fan heaters.

Central heating

Central heating is a heating mode that heats different rooms in a house or building from a single point called a heat generator or furnace.

Check valve

A component that allows air to flow in one direction only.

Coefficient of performance

The coefficient of performance, sometimes abbreviated as COP or CP, of a heating device is the ratio of the heat output to the work input or

Where Q is the useful heating output of the device and W is the absorbed mechanical input.

Coil heater

An electric element installed near the heating register of each room or livable area, or even in the main feed of the hot air supply of a system with two or more distribution areas.

Coil or tubular heating element

A heat-producing component in devices like the Stelpro CH. It is coil-shaped for better heat diffusion.


Comfort is what we offer at Stelpro. A complete offer and a 360-degree global solution. In short, Stelpro covers every aspect of comfort.

Commercial baseboard

A heating device installed under glass surfaces, which can span the length of a wall, to ensure uniform heating throughout the room. It was designed to be set back from furniture, so that furniture either hides it or it does not get in the way of furniture that is being moved around. Some models are fitted with a sloping top, so that books or other objects cannot be placed on top of it, which could hinder its performance. The CBB and CBF are two types of popular commercial baseboards manufactured by Stelpro.


Stelpro consoles are convection devices convenient for many applications. Whether installed on a wall or ceiling, Stelpro consoles live up to their reputation. Thanks to their robust housing, they can also be installed on concrete walls or recessed into regular ones. Stelpro consoles come with a wide range of power settings, as well as adjustable air inlets and outlets.


Generally speaking, a control is a set of techniques used to maintain the stability of a function. In Stelpro's case, this function is temperature.


Heat transfer is triggered by the movement of air that carries along the energy contained within. Convection can be natural (or free) when the heat exchange itself is at the origin of the movement of air. It is forced when the air is circulated by a mechanical device.


A convector is a heating device that uses the principle of natural convection to heat a room environment. It's a simple structure consisting of metal housing with an opening in the bottom part and another in the top part. The heating element is in the bottom part of the housing. Cold air enters the convector from the bottom, where it is heated, dilates and becomes less dense, then rises up inside the housing, pushed upwards by denser cold air, and finally escapes through the top. This hot air movement continues for as long as the heating element is operating. Stelpro's SIL and SHC models are two of the most trusted names in the convector market.


Stelpro is the first manufacturer to coin the term convector-baseboard to define its innovative electric baseboard with rounded corners. This is a more appropriate definition for this kind of device that uses natural convection. The B model by Stelpro is one of the most trusted convector-baseboards on the Canadian market.


A device used to create a link between two systems. It can be mechanical, electronic, and is often a combination of different technologies.

Current density

Current density describes the electric current that flows at a local scale, at one point of a material. Mathematically, it's a vector field where each point in space is considered a current density vector.



A dimmer is an electronic power device that modifies the tension and effective output current of an electrical signal, thereby modifying its load power.

Draft barrier

This convection device creates a curtain of ascending warm air over a glass surface, inhibiting cold air infiltration and preventing condensation build-up.

Dual energy

When two sources of energy are being used ? though usually not at the same time ? and one serves as the main energy source and the other as a backup.

Duct heaters

Installed at the outlet of air ducts to heat the air coming from the central system, they allow the temperature of the rooms in a home to be adjusted independently of one another. Stelpro offers many models of quality duct heaters such as the SAB, SEB and SUB EcoBoot series and the SDHR model.


ECM Motor

The ECM motor, which powers Stelpro's SEFECM furnaces, is a direct-current motor but without a speed control brush or integrated torque. It has all the advantages of a direct-current motor, but without the inconveniences, such as brush wearing, a shorter lifespan and noise.


The ETL Listed Mark is proof of product compliance to North American safety standards. Authorities Having Jurisdiction (AHJ's) in 50 states and Canada and retailers accept the ETL Listed Mark as proof of product safety.

Electric baseboard

Sometimes called a radiator or coil, an electric baseboard is a very efficient heating device that uses natural convection to heat room air. It can be controlled with an integrated or wall thermostat. Stelpro offers many models of electric baseboards.

Electric furnace

Sometimes called boilers, electric furnaces are appliances that allow the continuous transfer of thermal energy to a coolant. Furnaces are used in both industrial and domestic systems.

Electromagnetic fields

An electromagnetic field is the spatial representation of the electromagnetic force exerted by charged particles. An important concept of electromagnetism, this field represents the component set of the electromagnetic force being applied to a charged particle that moves within an absolute referential frame.

Energy Wise

Hydro-Québec requires that all manufacturers of electronic thermostats adhere to its Energy Wise program in order to meet its energy efficiency standards.

Epoxy-polyester powder paint

This type of paint is very resistant to heat, scratches and corrosion. Stelpro uses it on most of its devices.


Extrusion is a (thermo) mechanical manufacturing process by which a compressed material is forced to pass through a die with a desired cross-section, thus forming a part.

This continuous process creates a long, flat product (e.g.: Stelpro product grids).


Fan heater

The fan heater uses natural convection to produce heat but is also equipped with a powerful fan that can propel heat as needed. Stelpro offers several types of fan heaters (wall, ceiling, floor, kick space, etc.).


A fuse protects all electrical connections from an accidental current increase, thereby interrupting the current in case of electrical (overheating) fault.


Geothermy (or Geothermics)

From the Greek geo (earth) and thermos (heat), geothermy is a word with a dual meaning: It refers to the scientific study of the earth's internal thermal phenomena and to the technology used to exploit it. By extension, geothermy sometimes refers to geothermal energy, which is energy from the earth converted into heat.

Ground fault circuit breaker (or interrupter)

A circuit breaker electrically isolates and protects different electronic circuits in a home, i.e. against over-currents. Unlike a fuse, a circuit breaker can be reset.

Ground leakage current

This can occur due to deterioration inside conductors, which causes a fault current to move from the ground receptor to the ground.


Grounding protects people against electric shock when they use a device with an electrical fault. It also protects system materials inside the device. All electrical equipment is grounded with a conductor, so that the fault electric current is discharged into the ground.



HRAI (Heating, Refrigeration and Air Conditioning Institute of Canada) is a national association that represents more than 1,300 heating, ventilation, air conditioning and refrigeration (HVACR) manufacturers, wholesalers and contractors, and which provides Canadians with the tools and information necessary to ensure their total indoor environment comfort.


An acronym for Heating, Ventilation and Air Conditioning. Stelpro offers an entire range of HVAC products.


HVI certification is your insurance that the air flow (CFM rate) and noise level (sone) of our ventilation products were measured during rigorous testing conducted by an independent laboratory.

Hardwire connection

As its name indicates, this type of connection is fixed or permanent. A device connected this way cannot be moved from its source.

Heating cable

A heating cable or floor is a heat emission process designed to heat a room using the floor surface to heat the interior air. The concept consists of heating a room by distributing minimal heat over a large surface area (the floor of the room). This is one of the most comfortable, affordable, clean and aesthetic heating systems on the market.

Heating element

A heating element is an electrical component that, thanks to the Joule effect, produces heat by converting the electric current that passes through it.


Infrared heater

Infrared heaters heat solids rather than air. The heat is stored in the interior walls and furniture, which re-diffuse it even longer. Infrared radiant heaters do not circulate air, so they do not circulate dust and cause related inconveniences. The air has a lower dust level and is thus healthier. Stelpro manufactures the SIRH and SCR radiant heaters, two of the most trusted names in infrared heaters.



Leadership in Energy and Environmental Design (LEED) is a North American standardization system for high-quality environmental buildings. The term was coined by the US Green Building Council in 1998. There are four levels of LEED for buildings: certified, silver, gold and platinum. LEED evaluation criteria includes: energy efficiency, water consumption efficiency, heating efficiency, using locally produced materials and reusing any surplus of these materials.

Linear foot

A unit of measure equivalent to 1 foot = 0.3048 metres = 12 inches = 30.48 cm. The method used to calculate length in linear feet is the same as in regular feet.



An instrument used for measuring pressure in gasses or liquids.

Manual reset thermal protection

This protection shuts off a device in case of extreme temperature fluctuations. It must be manually reset once the device resumes functioning under normal conditions.


Modulation is the permanent, real-time adaptation of the power of a furnace to a dwelling's heating and sanitary hot-water needs. It provides ideal comfort in all seasons regardless of outside temperature.


A multimeter (also called a circuit tester) is a device containing a set of electronic measuring instruments, usually a voltmeter, an ammeter and an ohmmeter.


Nickel-chromium alloy (Nichrome)

Nichrome is a non-magnetic alloy of nickel and chromium. It is usually composed of 80% nickel and 20% chromium, but its composition can vary depending on the application. Nichrome is silver-grey in colour, anti-corrosive and reaches its melting point at around 1400°C. Nichrome is widely used in heating elements due to its highly resistant properties, especially to oxidation at high temperatures.

Nominal power

Nominal power (expressed in kilowatts) of an appliance or installation is the amount of power that can be supplied during continual use of the device while respecting its advertised efficiency. Nominal power is defined and guaranteed by the manufacturer.

Non-programmable thermostats

These thermostats allow a device to maintain a stable temperature, but they are not equipped with an automatic temperature control timer and must be manually adjusted.


Patio-door baseboard

Designed to be installed in front of a patio door, this convection heater will provide heat the whole length of the door or the windows by creating a curtain of warm air over the glass surface, inhibiting cold air infiltration and preventing condensation build-up. SPDH and PDH are two models of patio-door baseboards offered by Stelpro.

Portable heater

This forced-air heating device is perfect for construction sites or spaces that require temporary and efficient heating. As its name suggests, it can be moved around easily wherever heat is needed. Models have either a temporary or hardwire connection, and some even come with a mounting bracket. Stelpro carries two models, the PCH and the popular SCH.

Programmable thermostats

Electronic programmable thermostats are fitted with an automatic temperature control timer that controls the temperature of each room according to adjustable settings that change according to the occupants' needs. They substantially cut down on energy costs without compromising comfort.



Radiation is the process of emitting or transmitting energy waves or energy particles.

Refrigerator house

Always at the cutting edge, Stelpro has built its own internal test lab. The Refrigerator House is literally a house built inside a giant refrigerator right on Stelpro's premsises. The company did this so that it could conduct more customized tests internally, which saves time and money on top of being more efficient.


A relay is an electric device that uncouples the power unit from the control unit. It opens/closes an electrical circuit using a completely isolated secondary circuit (galvanic isolation) that can have different properties from the main circuit.



A unit used to measure perceived loudness, volume or acoustics.


Temperature sensor

A component that accurately detects and measures temperature.

Temporary hookup

As its name indicates, this type of connection is temporary. Therefore, a device connected this way can be moved from its source. Portable heaters are a good example.

Thermo-hygrometer (or Hygro-thermometer)

This is an electronic instrument that measures both temperature (generally in °C) and relative humidity (in % of the saturation threshold). The reading is taken with adapted probes.


Housing that protects the thermostat and prevents it from being adjusted without a key.

Twisted Pair

A transmission line formed by two intertwined wires in the shape of a helix.



UL (Underwriters Laboratories) is a safety consulting and certification company headquartered in Northbrook, Illinois. It maintains offices in 46 countries. UL was established in 1894 and has participated in the safety analysis of many of the last century's new technologies.

UL provides safety-related certification, validation, testing, inspection, auditing, advising and training services to a wide range of clients, including manufacturers, retailers, policymakers, regulators, service companies, and consumers.

Unit heater

A unit heater is an autonomous device used to heat a specific area. This piece of equipment is a heat exchanger with a built-in fan. Heat is provided by an electric coil; its exhaust passes through the exchanger where the air absorbs the heat. The hot air jet is directed at the area to heat.


Variable speed motor

A motor with seamlessly variable speeds. It provides more control, reduces running noise and is more energy efficient.


Corresponds to the electrical potential difference found between two points of a circuit when an electric current of one ampere dissipates one watt of power between these two points.


The potential difference between two points of an electronic device or circuit. It can also be defined as the amount of force required for the electric current to circulate in a device. Voltage is expressed as Volt (V).



In terms of electromagnetism, one watt is the rate at which work is done when one ampere of current flows through an electrical potential difference of one volt, or the product of voltage and current.