Replacing a Steam Cleaner's Double Thermostat

Aug 06, 2023, 15:37pm

The steam cleaner is a device used to clean different surfaces, simply with water vapor and without product or detergent. It cleans windows or hard floors, as well as rugs and carpets. The surface to be cleaned influences the type of cleaner: sled, hand or broom.

The very hot water vapor is produced from the water put in the tank, thanks to the resistance and the pressure switch. The thermostat is a safety part that cuts off the heating circuit when the temperature is too high.

There are generally so-called “bimetallic” thermostats, said to have two blades, in contact. Under the effect of heat, one of these blades deforms and is no longer in contact with the other. The current can no longer flow and the circuit no longer works.

This part should be replaced if you notice that the steam cleaner no longer works and no longer produces heat or steam.

The thermostat is positioned at boiler level, accessible from below the appliance. It is close to the solenoid valve, the resistor and the pressure switch.

A steam cleaner is an indispensable tool used widely for efficient and effective cleaning. One crucial component of a steam cleaner is the double thermostat. This device regulates the temperature of the steam cleaner by cycling the heating element on and off to maintain a specific temperature range.

Over time, the double thermostat may wear out or become defective, affecting the operation of your steam cleaner. When this happens, replacing the double thermostat is often the most efficient solution.

This article provides a step-by-step guide on how to replace the double thermostat in a steam cleaner.

Replacing a Steam Cleaner's Double Thermostat

Step 1: Gather the Necessary Tools and Materials

Before you begin, ensure you have the following tools and materials at your disposal:

  • A new double thermostat compatible with your steam cleaner model
  • A screwdriver (usually a Phillips or flat-head, depending on your model)
  • Safety goggles and gloves

Make sure you have the correct replacement part and all necessary tools before you start the process.

Step 2: Disconnect the Steam Cleaner from the Power Supply

Always disconnect any electrical device from the power supply before performing maintenance work. Ensure the steam cleaner is switched off and unplugged from the power source.

Step 3: Open the Steam Cleaner’s Housing

The screws securing the housing of your steam cleaner will need to be removed. Using your screwdriver, unscrew them carefully and gently lift off the housing to reveal the internal components of the machine.

Step 4: Locate the Double Thermostat

The double thermostat is typically a small box-like component with two separate temperature controls, often found near the heating element or boiler. If you have trouble locating it, refer to your steam cleaner’s user manual.

Step 5: Disconnect the Old Double Thermostat

Once you’ve identified the double thermostat, you’ll need to disconnect it. Begin by removing the wires connected to the thermostat. These wires are typically secured with terminals or clips, which you can loosen using your screwdriver. Make sure to take a note or a photo of the wiring setup to facilitate the installation of the new thermostat.

Next, remove any screws or clips that secure the thermostat itself, and carefully remove it from the unit.

Step 6: Install the New Double Thermostat

Install the new double thermostat in the same position as the old one. Secure it with the same screws or clips that held the old thermostat.

Now, reconnect the wires to the new thermostat, ensuring you follow the same setup as the old one. The notes or photos you took earlier will guide you in reconnecting the wires correctly.

Replacing a Steam Cleaner's Double Thermostat

Step 7: Replace the Housing

With the new thermostat installed and all wires reconnected, it’s time to replace the housing. Place it back onto the unit and secure it with the screws you removed earlier.

Step 8: Test the Steam Cleaner

Finally, reconnect your steam cleaner to the power supply and turn it on to test its operation. The new thermostat should now be effectively controlling the temperature, and your steam cleaner should be operating as expected.


Replacing the double thermostat of a steam cleaner is a relatively simple task when you have the right tools and a detailed guide. However, it’s important to note that this process involves dealing with electrical components. If you’re uncomfortable or unfamiliar with this type of work, it may be better to enlist the help of a professional.

By maintaining and replacing crucial components like the double thermostat when necessary, you ensure that your steam cleaner operates efficiently for many years to come. Always prioritize safety when working with electrical appliances, and when in doubt, consult an expert.