How to Make a Hot Water Pressure Washer

How to Make a Hot Water Pressure Washer?

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Hot water pressure washers are revolutionising every day thanks to their usefulness, from removing grease from cookware to thoroughly washing cars.

Have you ever attempted to use chilled water to rinse the oil off a frying pan in the kitchen? Most likely not! The pressure washers operate in a similar manner.

A Hot Water Pressure Washer Construction Guide

The hot water pressure washer is designed to eliminate even the smallest amounts of grease from any surface, much like the cold water pressure washer breaks up the dirt.

I tell you what. It really weakens the bond between grease and the surface at the molecular level. When the warm water flushes over the poor bacteria, fungi, and algae, they are unable to survive any longer.

By the way, what is the secret?

In order to complete the task, the hot water pressure washer employs pressurised air that has been heated to a temperature of 200 degrees Fahrenheit. While being somewhat bigger than a cold water pressure washer, it offers intense cleaning.

You definitely need this machine if you live in a cold region to receive the extra cleaning power in areas where water could potentially freeze.

But hold on! Ever wonder why a hot water pressure washer costs three times as much as a cold water pressure washer? Yes, it is significantly more expensive and out of some people’s budgets.

Why don’t you consider making this large machine yourself? With our detailed guide, we’re here to support you through this difficult procedure.

Step-by-Step Guide for Building a Hot Water Pressure Washer

It’s best to gather all the parts you need to assemble a hot water pressure washer before we start the building process. items required

A controller for a thermostat

The first thing you require is a thermostat controller with start and stop temperature settings and a sensor. Ensure that it has both Celsius and Fahrenheit numberings; failing to do so will result in complications down the road.

The three displays on a thermostat are for the start, stop, and current temperature. The sensor notifies you of the temperature it has discovered.

Ensure that the temperature is maintained between 100 and 110 degrees. The seals and gaskets of the water pressure washer are susceptible to damage from extreme heat.

Electric water pump for ponds or aquariums

If you want an effective operation, pick a pump with a 400 gallon water rating per hour rating. The water is forced into little ponds and aquariums.

To move water from the source to the pressure washer, we’ll use this pump.

Unbelievably Large Electric Immersion Heater

Invest with a sizable immersion heater with a stainless steelhead and a plug on one side. If you want things to proceed well, pick the same 13″-long structure that we are.

The water will be heated by this heater until the appropriate temperature is reached.

Male-to-Male Hose Connectors, 0.5″ and 3/4″

To connect a garden hose to the water pump, you’ll need a 0.5″ hose connector. A 34″ male-to-male hose is also required to complete any additional connections.

Hose for the washing machine with 34″ female connectors

The hose that will link the water source and the pressure washer comes next. Ensure that the washer hose has 3/4″ female connectors on both sides.

It must be longer than five feet, although it may be shorter.

Additional Items

A 22-gauge steel wire is another option that might aid in creating some seamless connections. If you don’t have this, it’s okay; any cable or string will do the trick.

Having a zip-lock bag on hand could be beneficial to you later on.

The Method:

Let’s start the procedure right away!

The Immersion Heater Should Be Suspended in a Bucket

To build a complete water arrangement, use a 5-gallon bucket from Home Depot or another retailer. Take a steel wire cable and begin winding it around one of the two legs of the electric immersion heater’s heating element.

Place the heater in the centre of the bucket after completing a single loop around it.

You might be asking how you can just do it at random. Now you have to wind the steel wire around the bucket handle starting at one end.

Then, secure the other side of the wire on both ends by repeating the procedure.

But hold on! Ensure that the heating element’s end does not touch the bucket’s bottom. Keep it at least two inches above the bucket so it won’t touch and melt it.

Put together the Fountain Pump

The fountain pump must now be put together, and you must ensure that it has a 0.5″ female opening to fit a 0.5″ male adapter. Insert the male adapter snugly into the pump’s hole.

The other end of the male adapter will fit into the 34″ adapter on the hose of the washing machine. To prevent connections from just opening in the middle, tighten all of the connections.

Now it’s time to attach the thermostat sensor to the pump with masking tape. By doing this, the sensor will prevent touching the heating element while floating in the bucket.

The fountain pump is now little heavier. It features a front face where it will suction water and four suction cups at the bottom.

Over the front panel, there are plus and negative signs can be seen. If you want to draw a little water via the dial, turn it clockwise to the right. Additionally, rotate the dial in the opposite direction if you want more water to enter.

Connect the thermostat control devic

You’ll be able to see the start, stop, and current temperature the sensor is providing as soon as you bring your thermostat controller into electricity.

If the start temperature is lower than the stop temperature, the power source will only switch on. To power the outlet, set the temperature range between 100 and 110 degrees Fahrenheit.

Last but not least, watch out for thermostat settings that go above 120 degrees Fahrenheit since this could harm the seals on the fountain pump.

Into the Water Pressure Washer, insert a 34″ Adapter

The water pressure washer has a hose that may be connected to a garden hose or a male-to-male adapter. Attach this adaptor firmly to the pressure washer’s hose.

Now join the female end of the washing machine hose to this male end.

Enable the immersion heater

The most important step has thus arrived. Your immersion heater’s wire should be plugged into the thermostat controller’s socket.

The thermostat will turn on the immersion heater when the temperature reaches the appropriate range.

Compile everything into the bucket

Create a comprehensive setup to get things going. Throw the water pump into the bucket with the immersion heater to collect water from the hose that is pointing downward and deliver it to the washer pressure.

The thermostat controller and excess wiring can be stored in the zip lock bag as a security measure. To keep the zip tie in place, fasten it to the bucket handle.

The Performance of the Complete Setup

Everything will work after the extension cord is plugged into a GFCI socket. You’ll notice steam erupting as the water heats up, and the thermostat will indicate that the temperature has reached the correct level.

It will take a five-gallon bucket 10 to 12 minutes to reach 110 degrees Fahrenheit. However, time may vary if your air temperature and bucket size are different.

The immersion heater will be turned off after the thermostat reaches the desired temperature, and you’ll see small bubbles forming around the element.


Last but not least, test the functionality of your hot water pressure washer.

To build a hot water pressure washer at home, follow these instructions.

Congratulations if you notice the hot water erupting and immediately washing the items! You’ve made a hot water pressure washer at home successfully.

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