Ranco Thermostats & Controls – Low to High Temp Range

Thermostats and pressure controls guide

Find the right control unit for your refrigeration or HVAC setup. This guide breaks down each type to help you choose based on temperature range and application.

Table of contents

• ✅ Low-temp thermostats
• ✅ Medium-temp thermostats
• ✅ Low pressure (L/P) controls
• ✅ High pressure (H/P) controls
• ✅ Dual pressure (D/P) controls

Low-temp thermostats

Ideal for freezers, blast chillers and other refrigeration systems that need low temperature control down to -35°C.

• ✅ Thermostat L/Temp – adjustable from -35°C to -7°C

Medium-temp thermostats

Perfect for cool rooms, beverage chillers and standard refrigerated storage systems.

• ✅ Thermostat M/Temp – adjustable from -18°C to 13°C
• ✅ Thermostat M/Temp – adjustable from -5°C to 25°C

Low pressure (L/P) controls

Used for controlling compressor cut-in/cut-out or safety shut-off in low-pressure refrigerant systems.

• ✅ L/P control – manual reset with ¼” flare
• ✅ L/P control – auto reset with ¼” flare
• ✅ L/P control – auto reset with capillary tube

High pressure (H/P) controls

Critical for preventing overpressure damage in compressors and refrigerant systems operating at high head pressures.

• ✅ H/P control – auto reset with ¼” flare
• ✅ H/P control – manual reset with ¼” flare

Dual pressure (D/P) controls

Combines high and low pressure monitoring in one unit—great for compact installations needing full pressure protection.

• ✅ D/P control – manual reset for Hi/Lo with flare fitting
• ✅ D/P control – manual reset for Hi only with flare fitting