Laars Heating Systems RE2217700 Limit L99H008 handling media from -22°F to

handling media from -22°F to 284°F

Maintains performance across a broad operating temperature range

For technicians performing a Rheem AC expansion valve replacement

it is often due to the switch failing to close at 30°F

protecting heat exchangers and pressure vessels from structural damage

Laars Heating Systems RE2217700 Limit L99H008 handling media from -22°F toThe Laars RE2217700 High Limit Switch is a critical safety component designed for precise thermal regulation in hydronic heating systems. Engineered for high temperature protection, this automatic reset limit triggers at 200 Fahrenheit, breaking the electrical circuit to prevent heat exchanger damage or unsafe operating conditions. As a direct OEM Laars replacement part, it ensures proper calibration and fitment for compatibility with Laars Mighty