The Stelpro SWTF is a robust line-voltage mechanical thermostat designed for reliable temperature control of electric heating systems. Available in single-pole and double-pole configurations, it is rated for 120–277 VAC at 22 amps and supports heater loads up to ½ HP, including electric baseboards, wall fan heaters, and commercial unit heaters. The precise 50–90°F adjustable dial provides simple, responsive temperature control, while the compact white molded plastic housing offers a clean, discreet appearance. The double-pole configuration provides a full power cutoff when turned off, while the single-pole configuration is designed for applications that do not require complete shutoff.
Designed to mount in a standard 2×4 vertical outlet box with 2-wire or 4-wire wiring configurations, the SWTF is CSA certified to applicable US and Canadian standards for use across North America. Backed by Stelpro's 1-year limited warranty, it provides dependable performance for a wide range of electric heating applications.
[This review was collected as part of a promotion.] Im so excited to out this up in our barn it's perfect for it! It's not alot of maintenance, easy to install, no issues when we turn the heat on! So far it's been accurate for the temperature but its by our door so it may vary a degree or 2 but im fine with that!. Stacm. Wed Apr 29 2026