Heating

Sludge Treat storage tank additive cleans and conditions heating system fuel oil. Prevents fuel-related failures, improves combustion efficiency, reduces soot formation and conserves energy. Hercules products are built to last and are trusted by plumbers...

This kit contains all available orifices (No. 4 - .040 In., No. 5 - .070 In., No. 6 - .0935 In., No. C - .1285 In., and No. D - .1850 In.) along with the angle steam valve. This allows you to size the valve for installation in any room, maximizing...

Simple to use, twist dial mechanical single-pole thermostat. Can replace most wall-mounted line voltage thermostats and the color-coded wires make installation simple. A cost-effective and easy way to control room temperature.

Shuts off gas when pilot goes out and supplies power to operate a millivolt thermostat. Package includes an adapter sleeve for No. PG-9 pilots, nut, and clip to provide a truly universal replacement for 600/750 millivolt output generators.

1/8" radiator air valve, .070" vent size. Vertical mounting. Venting capacity equal to 4 ordinary valves. For use on radiators near boiler and in warm rooms. Self-adjusting thermostatic control, float to prevent water escape, reduces radiator noise, cuts...

This 36 inch universal thermocouple, replaces thermocouple, gas pilot light control, in furnaces, boilers, water heaters and gas space heaters, includes Adapter fitting, tip clip, for universal replacement.

Single-stage non-programmable thermostat is compatible with single stage heating, cooling and heat pump (without aux) systems. Features backlit display and precise temperature control. Precise temperature control of +/- 1 deg (degree) for maximum comfort...

Classic 70 Series 24 Volt digital thermostat. Compatible with single-stage heating and cooling. 5-2 Day program. 2 AA batteries power thermostat. 1.2 In. display. Beige.

Simple to use, twist dial mechanical single-pole thermostat. Can replace most wall-mounted line voltage thermostats and the color-coded wires make installation simple. A cost-effective and easy way to control room temperature.

Easy to install and operate, this Cadet baseboard-mount double-pole thermostat provides simple temperature control. Designed exclusively to fit on Cadet electric baseboard heaters, this thermostat can be mounted to either end of the heater and fits...

Easy to install and operate, this Cadet baseboard-mount double-pole thermostat provides simple temperature control. Designed exclusively to fit on Cadet electric baseboard heaters, this thermostat can be mounted to either end of the heater and fits...

The Sensi Lite Smart Thermostat (ST25) is a Wi-Fi-enabled, ENERGY STAR-certified thermostat designed for easy DIY installation and smart home integration. With its touchscreen display, it allows remote control via the Sensi mobile app, helping users save...