raptor logo

Strictly Necessary Cookies

Always Active

These cookies make our website work. They include logging personal details, like login/sign-up or account data, browser information, images & videos, and shopping cart journey.

In addition, we use optimization cookies to test new features and designs on our website. The information collected helps us improve our website and customers' experience.


These cookies are used to understand the performance and relevancy of our adverts, to provide you with personalised adverts on other websites and social media, to track when you have arrived at our site from a recognised third-party affiliate website, and to track if you made a purchase based on the adverts we displayed to you.


These cookies enable us to provide personalised product and content recommendations, to make the browsing experience more relevant to you.


These cookies are used to offer customer surveys and feedback, to improve search results, and to allow you to share content from our website on social media.


These cookies help us improve our website by collecting and reporting information on how you use it.


A subsidiary of Robertshaw, Ranco is a leading manufacturer of reliable electronic & electromechanical controls for refrigeration and air conditioning equipment. Ranco's extensive catalogue includes line voltage thermostats, heat pump reversing valves & solenoid coils and cooling filter dryers, in addition to dual pressure, oil protection, ice maker & single pressure controls. Read More


HVAC and Refrigeration



HVAC and Refrigeration Filter

HVAC ControlsView all

  • Dual Pressure Controls

    Combine the functions of both high- and low-pressure controls and are suitable for use with R-12, R-22, R-134A and R-502 refrigerants. Feature an SPST switch and are colour-coded for easy identification of pressure lines

  • Duct Pressure Switches
  • Electric Appliance Controls
  • Heat Pump Reversing Valves

    Includes solenoid-operated Ranco reversing valves to reverse the direction of flow of the refrigerant and change the heat pump refrigeration cycle from cooling to heating or vice-versa. Available in different suction tube internal diameters

  • Heat Pump Solenoid Coils

    LDK Series continuous-duty electromagnetic solenoid coils used to operate the pilot valve that further controls reversing valves. Supplied with a 48-inch lead and offered in different power ratings at 50 / 60 hz

  • Line Voltage Thermostats

    Line Voltage Mechanical and Electrical Thermostats designed to regulate the temperature of the high-rise buildings where cold-air flow intake and hot-air exhaust control are simultaneously; ideal for use with attic ventilators, fans, and dampers. Features a control range of -30 to 220 deg F

  • Oil Protection Controls

    Protect pressure-lubricated refrigeration compressors from damage due to loss of oil pressure. Feature a front-located captive cover screw, time delay modules and Super Cap capillary vibration protection system

  • Thermostat Accessories

    Includes temperature sensors that can measure temperatures ranging between -30 and 220 degrees F. Supplied with an IP67 rated thermistor sensor and a 22 gauge cable

A/C RefrigerationView all

  • A/C Refrigeration Accessories
  • Ice Maker Controls

    UL listed Ranco ice bank controls, ice bin level controls and ice harvest controls to control the size of the ice banks and increase the efficiency of the ice machines

  • Refrigeration Access Valves

    Feature full brass construction and a swivel tee; suitable for use with all CFC, HCFC and HFC refrigerants

  • Refrigeration Controls

    Defrost controls, temperature controls, freezer controls, water cooler controls and air conditioner cycling controls designed to ensure proper and uninterrupted functioning of refrigeration systems

  • Refrigeration Solenoid Valves

    Normally closed / two-way normally closed refrigeration solenoid valves and refrigeration solenoid valve coils designed for use with commercial refrigeration systems to control the flow of refrigerants. Junction box connectors for solenoid valves also available

  • Single Pressure Controls

    Designed for use with HVAC compressors to avoid loss of refrigerant. Feature a DPST / SPST / SPDT switch and can control pressures ranging from 0 to 450 psi

About Ranco

Ranco line voltage thermostats provide on / off control for air conditioning, refrigeration and commercial heating. These Ranco thermostats feature two programmable stages for cooling & heating and an LCD screen for indicating relay status & temperature readings. They are capable of sensing temperatures ranging from -30 to 220 degrees F. Ranco ice maker controls maintain the ice thickness in refrigerated cabinets, ice builders and soft drink vending machines. These controls feature bulb & capillary sensors for auto turn-off & high separation resolution.

Things to Consider

Cross-Reference Alternatives

Ranco product's model numbers generally cross individual reference to the equivalent Honeywell, Johnson Controls, White-Rodgers & Robertshaw MPNs (manufacturer's part numbers). So, if you're looking for thermostats, valves, controls & accessories that are either out of stock or obsolete, chances are Raptor Supplies has the alternate product available.


These Ranco products are generally small in size and require compact packaging. They are suitable for courier shipment and not air freight.

Major Trade Names

Frequently Asked Questions

How to set up a Ranco thermostat?

  • Ranco's ETC line of thermostats / temperature controls can be set using the set, up & down buttons on the unit after powering them On & pressing the set button. Users should first select their required temperature unit (degree F or C) by pressing the set button again.
  • After returning to the main menu, "S1" icon will appear on the display, press the up or down arrow keys to increase or decrease the set-point temperature. Press the set key again to return to the main menu.
  • Users will see the "DIF 1" icon blinking in the display. Press the arrow keys to set the temperature differential (temperature range where the thermostat would operate in the heating / cooling mode). The differential temperature in the heating mode is set lower than the setpoint temperature, whereas it is set higher than the setpoint in cooling mode. Press the Set key again.
  • Either "C1" or "H1" will blink in the display window to program the cooling & heating settings. Press the set key to lock the programming choices and finish the set-up of a Ranco thermostat.

What do different error codes mean in Ranco temperature controls?

E1 error code appears in the controller when the up or down arrow key is pressed without going to the programming mode, whereas the E2 error indicates that the control setting is not stored properly in the memory. EP error code denotes an open / shorted probe or out of range temperature sensing and the EE error code shows corrupt EEPROM data. CL code appears if the user has entered the calibration mode.