--- title: The new generation of Comet hot water pressure washers description: "Meet the new generation of Comet hot water pressure washers: let’s find out all the details of a more efficient, safe and environmentally sustainable range" image: https://blog.comet-spa.com/hubfs/Comet%20%20-%20copertina%20Nuova%20Gamma.jpg --- - [EN](https://blog.comet-spa.com/cleaning-en) - [IT](https://blog.comet-spa.com/cleaning-it) - [B2B](http://webup.comet.re.it/) - [Job and Careers](https://joinus.emakgroup.net/areapubblica/Registrati.aspx) [YouTube](http://www.youtube.com/channel/UCef353b7MfpEv6dCix0o2lw)[Facebook](https://www.facebook.com/Cometgroupspa)[LinkedIn](https://www.linkedin.com/company/comet-s-p-a-) [![logo](https://blog.comet-spa.com/hs-fs/hubfs/Loghi/logo.png?width=248&name=logo.png)](https://comet-cleaning.com/en) - [BLOG](https://blog.comet-spa.com/cleaning-en) - [PRESSURE WASHER](https://comet-cleaning.com/en/pressure-washers) - [FLOOR CARE](https://comet-cleaning.com/en/floorcare) - [CONTACT](https://comet-cleaning.com/en/contact) Search for: # THE NEW GENERATION OF COMET HOT WATER PRESSURE WASHERS By [Comet](https://blog.comet-spa.com/cleaning-en/author/comet) | February 5th, 2026 | Categories: cold water pressure washer | [0 Comments](https://blog.comet-spa.com/cleaning-en/the-new-generation-of-comet-hot-water-pressure-washers#comments-listing) [![THE NEW GENERATION OF COMET HOT WATER PRESSURE WASHERS](https://blog.comet-spa.com/hubfs/Comet%20%20-%20copertina%20Nuova%20Gamma.jpg)](https://blog.comet-spa.com/cleaning-en/the-new-generation-of-comet-hot-water-pressure-washers) The range of Comet hot water electric [pressure washer](https://comet-cleaning.com/en/professional-high-pressure-washers) is evolving, integrating technologies that respond to the growing market needs. Greater **efficiency**, more **safety**, and higher standards regarding **environmental friendliness**. Let’s find out all its features, not before summarizing the advantages of a hot water pressure washer for home and professional cleaning. **![comet\_nuova gamma\_km](https://blog.comet-spa.com/hs-fs/hubfs/Comet_nuova%20gamma_KM.png?width=649&height=649&name=Comet_nuova%20gamma_KM.png)** ## **THE HOT WATER PRESSURE WASHER** The main difference between cold water and hot waterpressure washers lies in the type of dirt to be removed and how quickly thedirt is removed. Compared with cold water **pressure washers, hot water pressure washers** have as their main advantage the ability to **effectively and quickly** **degrease**: for example, they can perfectly clean oil-covered mechanical components, engines, and surfaces soiled with oil or grease in a very short time. Cold water pressure washers, on the other hand, are more compact and handier and can be stored in small closets and used as needed, but their biggest advantage is their lower purchase price, although hot watermachines are an important **investment to save on labor, chemicals and working hours**. **[![Download Comet Free Guide](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/5415755/d44289e9-72e2-4974-ba77-38dc6bd8f870.png)](https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/5415755/d44289e9-72e2-4974-ba77-38dc6bd8f870)** If cold water pressure washers take advantage of water pressure, high-performing nozzles, and chemicals to break dirt and scale down, hot water ones add the functionality of **a coil that heats the water** pumped by the machine’s pistons to deliverit at a temperature which is able to **dissolve grease and oil** derived from hydrocarbons or compounds of plant and animal origin. The high-water temperature, like the steam produced by some models, helps dissolve oily-type dirt, even without using detergents and cleaners. The only precaution to be observed is that certain plastic surfaces,or those covered with certain paints, cannot with stand high temperature and maybe damaged. Hot water pressure washers are also a more environmentally sustainable choice, as they avoid the use of polluting products by relying solely on water for cleaning. ### READ: [COLD WATER OR HOT WATER PRESSURE WASHERS: HOW TO CHOOSE](https://blog.comet-spa.com/cleaning-en/cold-water-or-hot-water-pressure-washers-how-to-choose)   **![KF EXTRA nuova carena](https://blog.comet-spa.com/hs-fs/hubfs/KF%20EXTRA%20nuova%20carena.jpg?width=649&height=447&name=KF%20EXTRA%20nuova%20carena.jpg)** ## **HOT AND COLD WATERPRESSURE WASHERS: PROS AND CONS** When you need to buy your home or professional pressure washer, it is essential to analyze your needs by comparing the advantages of one and the other type of pressure washer, opting for the best choice based on what you are looking for from your next hot water or cold water pressure washer. To help you, here are, in summary, the main elements to take into account. Cold water pressure washers cost less and require less maintenance, but they need chemicals, consume more water, and take longer to work. Hot water pressure washers are more effective againstgrease and oil, wash in less time, and use less water, pressure, and detergent. Conversely, they need more frequent maintenance, consume more energy, and cost more when purchased. For a quick maintenance operation on greased elements, hot water is certainly preferable. To wash away mud from the backyard or dirt deposited on garden furniture by rain, you may prefer a cold water pressure washer without any problem. If you use a pressure washer in the large spaces of a workshop, you will have no problem using a hot water pressure washer. Conversely, if you have to work in small spaces, a handier cold water pressure washer is recommended. ### READ: [HOT WATER PROFESSIONAL PRESSURE WASHERS: OUTSTANDING PERFORMANCE TO SIMPLIFY YOUR WORK](https://blog.comet-spa.com/cleaning-en/professional-hot-water-pressure-washers-outstanding-performance-to-make-your-job-easier) [![Scarica la Guida | Pompe a membrana: Installazione Diagnostica e Risoluzione dei Problemi](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/5415755/38dceed0-a2ce-4fb7-922b-16ab539c859f.png)](https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/5415755/38dceed0-a2ce-4fb7-922b-16ab539c859f) ## **THE NEW GENERATION OF COMET PRESSURE WASHERS** Comet’s range of electric hot water pressure washersis evolving, incorporating technologies that meet the demands of efficiency, safety and environmental friendliness. Here, then, are all the features that make it evenmore essential in professional cleaning jobs. ### **Major news:** - **New electronic boards** available in three configurations (basic, intermediate, and advanced functions) with increasingly advanced levels of safety, diagnostics, and control tailored to the needs of each model. - **Next-generation motors:** progressive implementation of high-efficiency motors with materials and technologies that provide top performance and reduced fuel consumption. - **Biofuel-compatible diesel pumps:** new technology enables the use of environmentally sustainable HVO and Biodiesel fuels, thus reducing environmental impact. ### **New electronics:** Thenew electronic boards offer advanced functions such as delayed Total Stop,microleakage alarm, motor/water overtemperature, fuel shortage, flamemonitoring and routine maintenance. Multi-color LED diagnostics enable quickidentification of machine states.\ ![KM EXTRA nuova carena](https://blog.comet-spa.com/hs-fs/hubfs/KM%20EXTRA%20nuova%20carena.jpg?width=800&height=855&name=KM%20EXTRA%20nuova%20carena.jpg) Available features vary by model and are divided into three main **configurations**: ### **Basic configuration:** - Delayed Total Stop - Network indicator light - No fuel indicator light - Motor overtemperature alarm (thermal protection) - Anti-scale control (models with anti-scale system only) - All basic functions - General 20-minute stop - Low mains voltage alarm - Microleakage alarm - Routine maintenance alarm - Amperometric alarm - Phase check - High-voltage transformer control - Arranged for boiler malfunction alarm (this function can be activated on request) - Arranged for flame control system (this function can be activated on request) - All intermediate functions - Water overtemperature alarm - Electronic water temperature control - Steam stop - LED Diagnostics   ### **Intermediate configuration:** - All basic functions - General 20-minute stop - Low mains voltage alarm - Microleakage alarm - Routine maintenance alarm - Amperometric alarm - Phase check - High-voltage transformer control - Arranged for boiler malfunction alarm (this function can be activated on request) - Arranged for flame control system (this function can be activated on request) ### Advanced configuration: - All intermediate functions - Water overtemperature alarm - Electronic water temperature control - Steam stop - LED Diagnostics ![KP - KP PRO nuova carena](https://blog.comet-spa.com/hs-fs/hubfs/KP%20-%20KP%20PRO%20nuova%20carena.jpg?width=800&height=844&name=KP%20-%20KP%20PRO%20nuova%20carena.jpg) ### **Latest generation motors** Newmotors provide **greater energy efficiencyand reduced fuel consumption**, optimizing pressure washer performance and **life**. ### **HVO and Biodiesel-compatible diesel pumps** Newpumps to be implemented in 2026 are certified to use environmentallysustainable fuels. - **HVO (Hydrotreated** **Vegetable** **Oil):** derived from vegetable oils, reduces CO₂ emissions by up to 90%. - **Biodiesel (B100):** biofuel blend with up to 100 percent FAME added, as defined by DIN SPEC 51603-6 and EN 14214. ### **Environmental benefits:** Byusing HVO and Biodiesel, **greenhouse gasemissions can be reduced**, energy transition can be promoted and air qualitycan be improved. ### **Implementation roadmap:** During2026, the new specifications will be phased in across the whole KM range(Classic, Extra, EVO), KF Steel, FDX Hot Cube/Compact/XL, and KP PRO, andsubsequently across all other hot water models. Implementation of the new features listed so far arealready available for the following KM Range Models: ### **KM CLASSIC 7.15 ZW TRF 400/50 V2** ### **KM CLS+CIS 7.15 ZW TRF 400/50 V2** ### **EXTRA KM 7.15 ZW TRF 400/50 V2** ### **KM EVO CLASSIC 9.15 FW2 T 400/50 V2** ### **KM EVO CLASSIC 9.21 FW2 T 400/50 V2** [![New call-to-action](https://hubspot-no-cache-eu1-prod.s3.amazonaws.com/cta/default/5415755/10a7a2c6-63e9-4a98-b5b6-36c939ef5e39.png)](https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/5415755/10a7a2c6-63e9-4a98-b5b6-36c939ef5e39) #### Share This Post! [mailto:?body=https://blog.comet-spa.com/cleaning-en/the-new-generation-of-comet-hot-water-pressure-washers](mailto:?body=https://blog.comet-spa.com/cleaning-en/the-new-generation-of-comet-hot-water-pressure-washers) ### Related Products [![FDX ELITE and FDX PRO: petrol-powered pressure washers for difficult environments and heavy-duty cleaning tasks](https://blog.comet-spa.com/hs-fs/hubfs/FDX%20ELITE%20-%20copertina%20blog%20-%202048x1052px-1.jpg?width=720&name=FDX%20ELITE%20-%20copertina%20blog%20-%202048x1052px-1.jpg)](https://blog.comet-spa.com/cleaning-en/fdx-elite-and-fdx-pro-petrol-powered-pressure-washers-for-difficult-environments-and-heavy-duty-cleaning-tasks) #### [FDX ELITE and FDX PRO: petrol-powered pressure washers for difficult environments and heavy-duty cleaning tasks](https://blog.comet-spa.com/cleaning-en/fdx-elite-and-fdx-pro-petrol-powered-pressure-washers-for-difficult-environments-and-heavy-duty-cleaning-tasks) July 13th, 2026| [0 Comments](https://blog.comet-spa.com/cleaning-en/fdx-elite-and-fdx-pro-petrol-powered-pressure-washers-for-difficult-environments-and-heavy-duty-cleaning-tasks#comments-listing) When professional cleaning has to deal with mud, dust, debris, encrusted surfaces and areas without electrical power, you need a machine capable of [![COLD WATER OR HOT WATER PRESSURE WASHERS: HOW TO CHOOSE](https://blog.comet-spa.com/hs-fs/hubfs/BLOG_IDROPULITRICI/Blog_idropulitrici_VARIE/Acqua%20calda%20fredda%20-%20SCELTA.jpg?width=720&name=Acqua%20calda%20fredda%20-%20SCELTA.jpg)](https://blog.comet-spa.com/cleaning-en/cold-water-or-hot-water-pressure-washers-how-to-choose) #### [COLD WATER OR HOT WATER PRESSURE WASHERS: HOW TO CHOOSE](https://blog.comet-spa.com/cleaning-en/cold-water-or-hot-water-pressure-washers-how-to-choose) June 1st, 2026| [0 Comments](https://blog.comet-spa.com/cleaning-en/cold-water-or-hot-water-pressure-washers-how-to-choose#comments-listing) The choice of a pressure washer, like for any machine, is linked to the purpose for which it is used, but also to the way in which it is used. [![K ELITE: THE COLD WATER PRESSURE WASHER FOR THE TOUGHEST JOBS](https://blog.comet-spa.com/hs-fs/hubfs/K%20ELITE%20TS%20-%20copertina%20blog%20-%202048x1052px.jpg?width=720&name=K%20ELITE%20TS%20-%20copertina%20blog%20-%202048x1052px.jpg)](https://blog.comet-spa.com/cleaning-en/k-elite-the-cold-water-pressure-washer-for-the-toughest-jobs) #### [K ELITE: THE COLD WATER PRESSURE WASHER FOR THE TOUGHEST JOBS](https://blog.comet-spa.com/cleaning-en/k-elite-the-cold-water-pressure-washer-for-the-toughest-jobs) May 18th, 2026| [0 Comments](https://blog.comet-spa.com/cleaning-en/k-elite-the-cold-water-pressure-washer-for-the-toughest-jobs#comments-listing) We are pleased to present K Elite, the Comet cold water pressure washer specifically designed to tackle heavy-duty cleaning tasks. 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