White-Rodgers 1145-33 Hydronic Control

The White-Rodgers 1145-33 Hydronic Control delivers fast response for reliable boiler and radiant heating systems. Built for precision and durability, this hydronic control covers a temperature range from 100 to 240°F to meet seasonal heating needs while maintaining steady comfort.

Its SPST, Open-On-Rise contact configuration enables straightforward operation, while a 1/2 inch threaded connection ensures simple, compatible installation. The adjustable differential of 5 to 45°F lets you dial in exact turn-on and turn-off temperatures for energy efficiency and stable room temperatures.

• Fast-response hydronic control for quick boiler activation
• Temperature range: 100–240°F for versatile use
• SPST Open-On-Rise contact configuration
• 1/2 inch threaded connection for easy mounting
• Adjustable differential: 5–45°F