Best Powerful Diesel Steamers | Industrial grade Diesel Steam Cleaners

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Updated on:

January 11, 2024

Best Most powerful Diesel Steam Cleaners | 2024 Review & Comparison

Diesel steam cleaners require small generator for electronic components like water pumps, sensors and controls, but water is heated and boiled by burning of fuel. With efficient diesel burners you can get maximum performance on field and use multiple cleaning guns by several operators.

Diesel steam cleaners are the best solution for all mobile services, like car wash and auto detailing, hvac cleaning, disinfection , construction cleaning and so on.

Small generator, Powerbank or standard 120V wall outlet needed to operate your steam cleaner.

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commercial steam cleaner
Fortador Commercial grade steam cleaner

1. How to Choose the Best Diesel Steam Cleaner for Your Commercial Cleaning Business    

As a steam cleaning contractor you can offer a variety of cleaning services or specialize in certain ones. Dry vapor commercial grade steam cleaners are appropriate for cleaning exterior surfaces, including exterior wood and bricks, decks, patios, cement walkways and driveways, awnings, windows and doors. Commercial customers prefer steam washing for industrial operations, graffiti removal and following building renovation. Diesel Steam Cleaners are also the ideal method for chemical free cleaning restaurant kitchens, dining rooms and restroom facilities. In homes, steam treatment makes quick work of sanitizing kitchen appliances, furniture, upholstery, carpets, hard floors, grout and tile.

2. Choose Your Industrial Diesel Steam Cleaner According to the Services Your Business Offers

The types of services your company offers should be a major factor in choosing your commercial steam cleaner. Consider the following features when making your selection.

2.1 Cost of professional diesel steam cleaner

Some models are expensive, starting at $7,799.00 USD, but at the same time, they are useful for a wider variety of jobs, which will allow your company to service a greater range of clients, thereby bringing in your money in the long run and adding efficiance and speed of work.

2.2 Size and Weight of diesel powered steam cleaners

A professional steam cleaner can weigh a lot, minimum 150lbs. Be sure to look at the unit's dimensions and weight and determine whether your personnel have the means to transport it easily from job to job.

2.3 Accessories and Attachments for steam cleaner

Our steam cleaners come with several basic attachments to use for the sanitation of different types of surfaces. Fortador also offers additional attachments and accessories that you can purchase separately. If you need a versatile industrial steam cleaner that you can use for a large variety of items, surfaces and spaces, look closely at what attachments come with the model you’re considering. Make sure that whatever you buy will have the proper functionality for the cleaning jobs you perform.

  • Extencion hoses
  • Lance for steam gun
  • Sliding platform for minivan
  • Special attachments, like undercarriage cleaner, window squeegee
  • Vacuum for extraction

2.4 Water Tank Size | Diesel Tank Size

Smaller units have smaller water tanks, requiring the operator to refill the device frequently, resulting in downtime. Think about whether you want a unit with big water tank or with connection to tap water that allow for continuous use during clean and sanitize operation.

All diesel steam cleaners have diesel tank enough for full day work without refill, thanks to efficiency Fortador can workk 3-4 days without refill, we recomend to keep 1 or 2 Gallons Fuel can in your van (trailer) with diesel to refill steamer in fields.

2.5 Diesel consumption

Usually fuel consumption is measured in GPH (Gallon per hour) or LPH (Liter per hour). Efficient burner can safe you a lot of money during years of use, so comparing initial investment amount into your diesel steam cleaner add operational costs on fuel with 20-40 working hours a week.

2.6 Steam Pressure and Temperature

steam temperature by sprayed distance explained
Steam Temperature by Sprayed distance

Cleaners like those made by Fortador have higher temperatures, which produce dryer steam, which provides a deeper chemical free cleaning, kills more germs and viruses and is more efficient. Consistency is also important because if a unit cannot consistently maintain temperature and pressure, it will clean less efficiently. The Centers for Disease Control (CDC) recommend temperatures of 250 degrees ad 270 degrees Fahrenheit for sterilization. Fortador’s professional steamers produce and maintain dry steam at 248 degrees to 284 degrees Fahrenheit.

2.7 Heating time to maximum pressure

Our PRO Line steam cleaner powered with Lamborgini burners that need only 2-3 minutes (7-8 minutes from cold start) to heat water inside steel boiler to maximum pressure of 20 bars (295 PSI) and keep this pressure at the level for job done

Select Your Best Diesel Steam Cleaner From Fortador’s Heavy Duty Comprehensive Lineup

As a reliable manufacturer using cutting-edge European technology, Fortador gives you a complete line of commercial grade steam cleaners with great options that will allow you to choose the right commercial grade steamer that will meet your company’s needs and even offer you opportunities to expand your business. Take a look at each machine's advantages and features to determine which one best fits your needs on this complete steam cleaner comparison. Our staff will be happy to set up a demonstration and answer any questions about chemical free services.

3. Best Diesel Steam Cleaners for heavy duty use

3.1. All-in-One Diesel Steam Cleaner and Vacuum Shampooer Fortador PRO Max

best commercial steam cleaner with vacuum
Fortador PRO Max Commercial steam cleaner with Vacuum

If your business has a high volume of carpet and upholstery cleaning, the Fortador PRO Max is the steam cleaning system to consider as this diesel-powered professional steam cleaner provides convenient all-in-one features with high capabilities. The versatile accessories that come with this machine will allow your operators to perform many different tasks while also increasing their efficiency with continuous steam.

Operating at a pressure of 20 bars / 295 PSI, the PRO Max gives you the steam pressure you need to effectively remove dirt, stains, bacteria, viruses and debris. It also has an output that makes it suitable for a high-volume cleaning business as it produces an outstanding 363 pounds of steam per hour. Another great feature is that this unit comes with three guns, two steam guns and a dual hose gun for shampooing and vacuum extraction. This feature allows three operators to simultaneously work with the unit, thereby increasing efficiency and productivity.

Many residential jobs require detergents to clean stains effectively from furniture and carpets. The Fortador PRO Max can deliver two different detergents at the same time as it has two tanks that hold 1.6 gallons of cleaning solution, which gives your business lots of flexibility when out on jobs. Thorough shampooing is often necessary to fully remove dirt and stains from soft surfaces.

The extractor that comes with both the PRO Max and PRO Max Deluxe works hand-in-hand with the shampooer and provides a penetrating cleaning that breaks down proteins in stains to result in effective debris removal on all types of soft surfaces. Extractors also decrease drying time while also allowing your operators to spend considerably less effort on each job using no harsh chemicals.

For dirt and grime removal and surface preparation, choose the unit’s wet-dry vacuum, which will remove loose debris and make cleaning more thorough.

A seven-inch touchscreen allows users to control and view all operating characteristics, including temperature, PSI, water and detergent level and diesel fuel, along with other key operating measures and service features.

Big boiler and Lamborghini diesel burner for commercial steam cleaner
Boiler and Diesel Burner of Fortador PRO Max

Another plus is that the PRO Max is more economical than many of its competitors with regard to water and fuel consumption. The PRO Max only uses 0.15 gallons of diesel fuel to produce needed steam, while the Optima DMF uses .6 gallons. Over eight hours, the PRO Max will use over four times less fuel than the Optima DMF.

Fortador can provide you with a convenient cargo slider to transport the industrial steamer PRO Max. This commercial-grade product is specially designed for Fortador units and easily mounts inside any commercial vans, but it also can be used to keep all your additional tools in easy to reach areas.


- Versatile all-in-one unit with Steam, Hot water (heavy humid steam) or Detergent mode
- Continuous flow steam at 20 bar / 295 PSI , Big water tank 6.6 Gallon / 25L

- Provides powerful steam sanitation and vacuum extraction
- Innovative, convenient design

- Steam control valve for each outlet
- Comes with a variety of accessories and attachments, including three hoses


- Unit is heavy at 440 lbs.
- Large dimensions
- Diesel exhaust
- Our most expensive unit

Learn more about best vacuum steam cleaners with extraction function.

3.2. Industrial High Pressure Diesel Steam Cleaner with detergent Fortador PRO

commercial steam cleaners for disinfection
Industrial Cleaning with Fortador PRO

This steamer is also great for residential and commercial cleaning and disinfection as it has the same boiler as the Fortador PRO Max, while also giving you the high-quality steam pressure and temperature needed to disinfect thoroughly. Users also get the same three-gun capability and flexibility and the same touch screen system and operating display for ultimate control. This unit also has the same volume, pressure and temperature performance as the PRO Max.

This unit will also increase your operation’s productivity as the water tank holds about 6.5 gallons while the diesel tank accommodates four gallons of fuel. It also has a higher level of fuel efficiency than the Optima DMF, and 6x time more efficient than Astra Idromatic allowing you to work 40 hours without refueling. The Fortador PRO has a 1.6-gallon detergent tank, providing the same capacity to add detergents or sanitizing agents.
Select the industrial steamer Fortador PRO if you already have a vacuum, extractor, and shampooer. You can use this machine to be the primary cleaning device for your business as it can greatly expand the possibilities for residential and commercial sanitation opportunities, industrial applications
One big advantage of the PRO is its size and weight. This machine only weighs 175 lbs., and with its much smaller dimensions, operators can easily maneuver it into tight spaces at job sites for effective and efficient commercial steam cleaning, sanitizing and post construction cleaning. You can also use our cargo slider with the PRO  for easy transportation.


- High level of cleaning power without harsh chemicals

- Continuous Flow Steam, Big water tank 6.6 Gallon / 25L
- Includes hot water (heavy humid steam), detergent or sanitizing agent feature

- Steam control valve for each outlet

- Very low maintenance costs
- Much lighter and smaller than competing machines across the market


- No extraction capability
- Diesel exhaust

3.3. Oldest on the market diesel industrial steam cleaner Optima Steamer DMF and Optima Steamer XD

Optima XD and Optima DMF diesel steam cleaners

Optima calls this steamers the most powerful steam cleaning machine in the world, but is it? Here is what people get when they buy this machine. This diesel-powered unit is DMF's best-selling steam cleaner. Although the manufacturer indicates it has a durable body design, its frame is made of polypropylene and polyethylene, so it is not quite as durable as the Fortador Pro S. Weighing 191 lbs., the Optima DMF is readily portable, making this machine suitable for mobile car and recreational equipment washing and detailing, solar panel cleaning, graffiti, washing outdoor sculptures, and weed graffiti and gum removal.

The Optima DMF features a smart control system that works via internal CPU monitors to control the steamer's mechanical and electrical operations. Designed to be user-friendly, this steamer also has multi-stage safety devices that force the machine to sound an alarm and shut off when there is a shortage of fuel or water, temperature or pressure goes out of range, abnormal burner flame or if the pump runs overtime. An automatic water filling feature eliminates the need for operators to manually fill the boiler when a water supply is readily available on site. Choose from wet or dry steam settings that are easily adjustable according to the type of cleaning job. The DMF's advanced structure allows for easy maintenance when the unit is not in use.

The water tank and fuel tank capacity are both 5.3 gallons. Its diesel burner produces steam in three to seven minutes. Its non-idling burner minimizes noise, emissions and fuel consumption, although it is not as fuel-efficient as the Fortador Pro S. The DMF ships with two 33-foot hoses and has longer hoses available in 49-foot and 65-foot lengths. A good assortment of tools, such as steam guns, specialty tools and adapters, are available for different job requirements. The DMF's dual spray gun allows two operators to work simultaneously without losing power, heat or pressure.

Steamer XD is a newer version of Optima Steamer DM(DMF). It is more convenient for use.and functioning. For example, there is one emergency stop switch for safety, standard feature for all Fortador diesel steamers. The size of tanks for water and fuel are increased, due huge consumtion. Also, it is so structurally convenient for service and maintenance.

This machine comes with a general manufacturer's one-year warranty and a two-year warranty on the boiler.


  • Lightweight
  • Available with a good assortment of tools, although most must be purchased as add-ons
  • Heats quickly within 3-5 minutes
  • Adjustable flow rate
  • Has good steam control


  • Boiler has a 35% smaller capacity
  • Only two hoses
  • Maximum PSA of 137.5, meaning jobs will take longer to finish
  • Made in Asia
  • No built-in vacuum
  • Is about 2.5-4 times less fuel-efficient than the Fortador PRO Line
Official statement from Optima Steamer
the Optima Steamer’s pressure doesn’t drop below 7 bar (101 psi) or 170°C (338°F) inside the boiler.

3.4. Diesel powered commercial steam cleaner Astra Idromatic

commercial diesel steam cleaner Astra Idromatic
Industrial diesel steamer Astra Idromatic

The manufacturer promotes this machine as a basic and steady steamer with minimal electrical consumption. If an electrical supply is not readily available at a worker site, a small generator can power the Astra Steamer.

Recommended applications for this steamer are for repair workshops, mobile car and recreational vehicle wash, cleaning of industrial machines, sports venues and equipment, cleaning of animal housing and equipment, gum and graffiti removal, food industries and urban weeding. The last application is somewhat unique as this machine comes with a specialized weeding tool to help remove weeds.

The Astra Steamer gives operators a machine with mechanical controls of various functions. A knob on the control board allows you to choose the way water feeds into the machine, either from a direct water source or from the machine's tank. Only one steam outlet comes with the machine, although the manufacturer claims that buyers can add another outlet. Operators can manually control steam via an outlet tap, getting steam right from the pump with installation of additional fittings and pipes. Most of the unit's functions are manually controlled via knobs. Users will also benefit from an errors diagnostic system based on sound and visual impulses from the control panel.

This machine is also heavier than other commercial steamers, weighing about 286 lbs. The additional weight can make a difference on the productivity of crews who have to load, unload and haul the steamer into place at various jobs. Diesel in its tanks lasts for about seven hours of work. Only four accessories are included with the steamer, including a steam gun with swivel nozzle, a teflon nozzle, a steam hose and a microfiber cloth. with one a single hose, operators will need to take take to switch between steaming and cleaning with detergents.

Idromatic, the company that manufactures the Astra steam does not disclose the composition of the machine's frame. Also, the manufacturer only provides a one-year warranty on this machine.


  • Has a large boiler capacity
  • Ability to add a lot of specialty tools at an extra cost
  • Short heating time of five minutes


  • Only one operator can use the machine
  • Manual operation of controls is outdated
  • Uses a lot of diesel fuel, approximately four times more than Fortador PRO Line steam cleaners
  • Low maximum

4. Get the Customer Service You Need From Fortador Industrial Steamers

Every Fortador steamer comes with a set of accessories like yet nozzles, washing guns, heavy duty steam hoses, detergent containers and other essentials for your cleaning business. We also stock various other products such as brushes and cleaning solutions that can augment your business and make job done

commercial tile steam cleaner
Complete solution for Commercial Steam Cleaning

5. Commonly asked questions

Q: Can you clean an engine with a steam cleaner?

A: Yes, cleaning engine with steam is efficient and safe, check this guide of engine steam cleaning

Q: Is steam cleaning good for cars?

A: Yes, steam cleaning is the best method of car cleaning, you can clean and sanitize interior and wash car outside with powerful steam cleaner

Q: Is steam a good degreaser?

A: Steam is a great degreaser due high temp, in some steam cleaner like Fortador you can add detergent into hot vapor

Q: What steam cleaner do auto detailers use?

A: Depends on budget detailers can stay with small steamers with pressure less than 75PSI or use PRO steamer with high pressure (more than 150PSI)

About the Authors

Sergey "Serg" Paskevich
Panama-based detailing pro, proud owner of Car Care Performance Detailing studio in Panama-City. Specializing in Paint Correction, Ceramic Coating, and comprehensive Car Detailing services
Kris Traczynski
As the visionary behind Fortador Steamers, I've revolutionized the cleaning landscape across both the USA and Europe. With a profound understanding of the cleaning industry, I've fostered expertise that sets new standards. My journey is one of innovation, commitment, and a relentless pursuit of exce

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