Efficiency, hygiene, and sustainability: The power of hot-water cleaning | Nilfisk

The power of hot-water cleaning

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Across industries and across the globe, cleaning teams are being asked to clean more surfaces, faster and more efficiently. Whether it’s sanitizing shopping carts between users, cleaning floors, or pressure-washing agricultural equipment, hot water is one of the most powerful tools available.

3 top benefits of hot-water cleaning

  • Efficiency — Better, faster cleaning results
  • Hygiene — Reduced bacteria and virus counts
  • Sustainability — Lower resource consumption"

Lower resource consumption

Just like dishwashing at home, hot-water cleaning provides better, faster results in commercial and industrial applications.

In partnership with the wfk – Cleaning Technology Institute, we conducted tests comparing hot- and cold-water pressure washing, and found that across all applications, hot water reduced cleaning times by an average of 40%. In some cases, such as those involving grease, fat, and oil, hot-water cleaning was four times more efficient than cold-water cleaning. That translates into a cleaning-time reduction of 75%.

Diagrams 01

Consider how much more your cleaning team could achieve with 75% more time. You could clean high-use areas or equipment far more often, or devote more attention to essential deep-cleaning tasks.

Using hot water also reduces drying time after cleaning, so cleaned areas and items are available sooner. For example, if you’re sanitizing shopping carts, hot water have them back on the floor more quickly. If you’re cleaning floors, they can be re-accessed earlier without the risk of slips, trips, or falls.

Hygiene — Reduced bacteria and virus counts

Clean, then sanitize (or disinfect, depending on the level of clean required). This is the “one-two punch” for stopping the spread of germs, like viruses and bacteria, that can be harmful to human and animal health. The effectiveness of the second step depends, in part, on how well you’ve performed the first one.

Heat is a key factor in battling germs. A study by the Thuringen State Office for Agriculture found that while cleaning with cold water had no impact on bacterial levels, raising the temperature to 60˚C reduced bacterial colonies by 90%. At 80˚C, bacterial colonies were reduced by 97%, and at 155˚C, they were eliminated entirely.

Diagrams 02

Heat can also help combat viruses. For example, the virus that causes COVID-19 is sensitive to heat, and can be inactivated by exposure to temperatures at or above 56°C for 30 minutes.

Hot water alone is not sufficient for sanitization or disinfection, but it can reduce bacteria and virus counts on surfaces in preparation for the next step. Learn more from our pdf: "8 Steps to Reduce or Eliminate Germs with HOT HIGH-PRESSURE WASHERS."

Sustainability — Lower resource consumption

Finally, hot-water cleaning decreases your resource consumption in three main ways.

  • Water - Because hot water reduces cleaning time, less water is required. We can translate the time savings into resource savings as well — for every 1,000 liters of water required for cold-water cleaning, hot-water cleaning will save at least 400 liters.

  • Energy - Shorter cleaning times also reduce energy consumption.

  • Chemicals - In some cases, hot water can decrease or eliminate the need for detergent because the heat is sufficient for dirt removal. If you’re sanitizing or disinfecting, you’ll still need to use an appropriate disinfectant for this step, but you’ll reduce the amount of chemical needed, overall.

    Hot-water cleaning is a highly effective way to boost the efficiency, hygiene, and sustainability of your cleaning operations. To learn about Nilfisk’s line of hot-water high-pressure washers, explore our Mobile and Stationary solutions.

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