Stelpro: Electric heating and connected thermostat support

Stelpro manufactures electric heating and controls, with discontinued Zigbee thermostat documentation for supporting existing installations.

Best for: Understanding and maintaining existing Stelpro connected heating installations and comparing exact thermostat load requirements.
Less suited to: Specifying discontinued Ki or Allia devices as an assumed current-production choice for a new installation.
Deployment: Line-voltage heating control with a compatible Zigbee hub where remote operation is required; installation follows the exact heater and thermostat specification.
Data in: Room temperature, setpoints and supported control state through the selected thermostat and hub.
Pricing: Current replacement availability and prices were not established; the reviewed connected models are discontinued.

Overview

Stelpro's company portfolio covers electric heating equipment and controls. Its connected thermostats are relevant to the large installed base of electrically heated homes, but the current catalogue makes an important distinction: the Ki Zigbee, Allia thermostat and Allia load controller pages now identify these products as discontinued.

Their documentation remains useful for identifying equipment, checking load requirements and maintaining an existing system. It should not be presented as proof of current production or replacement availability. This profile therefore separates the company's continuing heating business from the status of these particular connected-control products.

Offering

The Ki STZB402+ specifies 150 to 2000 W at 120 V and 300 to 4000 W at 240 V. It is a line-voltage thermostat intended for compatible electric heating loads. The Allia SAT402ZB additionally gives a 208 V range of 260 to 3400 W, alongside its 120 V and 240 V ratings.

The SALC0503ZB is a resistive-load controller with a different system role, intended to schedule suitable loads rather than measure room temperature as a thermostat does. All three reviewed pages carry discontinued status. An existing installation should therefore be identified by its actual model before choosing replacement hardware or relying on a feature description.

Technology

The Ki page identifies Zigbee communication and requires a compatible hub or documented controller for remote operation. The Allia thermostat page specifies Zigbee 3.0 and identifies hub-dependent functions. The similarly named Ki Z-Wave product in the discontinued catalogue is a separate radio variant, not another name for the Zigbee thermostat.

Stelpro's support instructions describe joining SAT402ZB to a hub through its connection menu and explain how a prior network association can be removed. This is useful commissioning documentation for an existing unit. It does not establish that every coordinator exposes all thermostat functions or that a successful join verifies physical heating operation.

Markets

Electric baseboards, convectors and fan heaters impose different control requirements from a low-voltage thermostat calling for heat from a central plant. The Ki and Allia pages give their intended load types and voltage-dependent ranges, providing a better basis for identification than the broad label of smart thermostat.

For maintenance, the support page provides pairing and product-service guidance, while the discontinued list makes lifecycle status visible. These sources help separate a communication problem from a procurement problem. A replacement decision still needs the installed heater's electrical characteristics and an actually available product, rather than assuming a discontinued device can be ordered again.

Company

Stelpro's history begins in 1981 and describes the development of its heating and control business. The contact page identifies its Saint-Bruno-de-Montarville location in Quebec, Canada; the history describes the establishment of the head office there. This profile concerns Stelpro's own heating and controls portfolio rather than a generic thermostat platform.

The manufacturer's willingness to keep discontinued-product information and support instructions public is useful to owners of existing installations. Lifecycle information is retained alongside technical specifications here because it changes how the catalogue should be used: a technically documented model can still be unsuitable as an unqualified current procurement recommendation.