--- title: KF-E hot-water pressure washer with an electric boiler description: The KF-E is Comet’s professional hot-water pressure washer with an electric boiler, designed to combine high pressure, hot water and Full Electric power. With water temperatures of up to 85°C, it can tackle even the most stubborn dirt without producing combustion fumes. --- [News and updates from the world of cleaning.](https://blog.comet-spa.com/cleaning-en) # [KF-E hot-water pressure washer with an electric boiler](https://blog.comet-spa.com/cleaning-en/kf-e-hot-water-pressure-washer-with-an-electric-boiler) Written by [Comet](https://blog.comet-spa.com/cleaning-en/author/comet) | Sep 29, 2026, 9:31:54 AM ## High-Performance Cleaning Without Compromising the Working Environment In professional indoor environments, cleaning requires high performance without compromising **air quality or acoustic comfort**. In settings such as **production facilities, food and wine industries, and other professional spaces**, being able to use hot water without combustion fumes offers a clear practical advantage. **This is where KF-E comes in.** The **KF-E** is Comet’s professional hot-water pressure washer with an **electric boiler**, designed to combine **high pressure, hot water and Full Electric power**. With water temperatures of up to **85°C**, it can tackle even the most stubborn dirt without producing combustion fumes. KF-E is also **three times quieter than a pressure washer with a diesel-fired boiler**, providing a significant advantage in environments where noise levels and air quality are particularly important. **Full Electric technology expands the possibilities of professional hot-water cleaning, making it suitable for indoor environments where emissions and noise require particular attention.** ## **Highlights** - **FULL ELECTRIC – ZERO EMISSIONS pressure washer** - **Ideal for indoor applications too** - **Three times quieter than a pressure washer with a diesel-fired boiler** - Electric boiler up to **36 kW** with a **70-litre capacity**, allowing the machine to operate for short periods even without a connection to the water supply while maintaining the same temperature - Water temperature up to **85°C** - **2 non-marking Ø 300 mm wheels + 2 swivel wheels with brakes** - Professional control panel with new electronic system - Comet LW pump with hot-water seals - Professional 4-pole motor at **1,400 rpm** - Anti-scale system with pump and **3.5-litre tank** - **3.5-litre detergent tank** - Professional pressure regulation valve - Electronic temperature regulation system     ## Hot Water Without Emissions: The Solution for Indoor Environments In enclosed professional environments, being able to use hot water without producing combustion fumes is a significant advantage. The **KF-E’s electric boiler** heats the water without generating combustion fumes, making the machine particularly suitable for **industrial environments, especially the food industry, workshops, production facilities and other indoor spaces** where maintaining air quality is essential. The combination of **high pressure and hot water** helps remove stubborn dirt, grease residues and the types of contamination commonly found in professional environments. KF-E also operates with significantly reduced noise. It is three times quieter than a pressure washer with a diesel-fired boiler, improving operator comfort even during extended use. ## Why Choose an Electric Hot-Water Pressure Washer? In the food and wine industries, cleaning operations require high performance as well as particular attention to the working environment. In wineries, wine-production facilities and food-processing plants, being able to use **hot water without combustion fumes and with reduced noise** offers a practical advantage. KF-E allows you to: - work in enclosed environments without producing combustion fumes; - use water heated up to 85°C, helping remove stubborn dirt and grease residues; - operate with reduced noise compared with a pressure washer with a diesel-fired boiler; - move easily around the workplace thanks to its professional configuration; - handle a wide range of cleaning requirements, both indoors and outdoors. ### Designed for Professional Environments KF-E has been developed around the practical needs of operators working in professional environments every day. The machine combines a design that facilitates handling, professional components and dedicated systems for hot-water management, providing a versatile solution for a wide range of cleaning applications. ### Professional Mobility and Handling The **two 300 mm rear non-marking wheels** and **two swivel front wheels with brakes** make the machine easier to move and manoeuvre, even in tighter workspaces. The structure also features **front and rear protective bumpers**, designed to protect the machine during handling. Another distinctive feature is the **central single anchoring point**, which allows the machine to be lifted using a **crane or winch** — a useful solution in professional environments where the machine needs to be moved or positioned in hard-to-reach areas. The **non-marking rubber delivery hose** completes the configuration, helping protect surfaces during cleaning operations. ### Professional Control Panel KF-E features a **professional control panel with a new electronic system**, designed to provide precise control over the machine’s main functions. The system includes an **electrical power LED, low-voltage alarm, amperometric control with overcurrent alarm, micro-leak detection system and routine maintenance alarm**, making it easier to monitor the machine’s operating status. ### Comet LW Pump: At the Heart of Performance The pump is one of the key components in ensuring performance, reliability and consistent operation in a professional pressure washer. KF-E uses a **professional Comet LW pump with three axial pistons**, a **brass pump head and hot-water seals**. This configuration is designed to provide durability and consistent performance even in demanding professional applications. ### Electronic Temperature Control KF-E’s new electronic system features a **high-precision temperature regulation system**, designed to keep the selected temperature stable during operation. The boiler is also activated by a **pressure switch**, contributing to efficient management of the heating system.   ## Where to Use KF-E Thanks to its combination of hot water, electric power, reduced noise and zero combustion fumes, KF-E is suitable for a wide range of professional environments. Key applications include: - Food industry - Industrial sector - Construction - Agriculture - Vehicle washing The ability to operate in enclosed environments represents a **key added value of Full Electric technology**, expanding the machine’s possible applications while maintaining its versatility for professional outdoor use. ### KF-E in the Food Industry In the food industry, professional cleaning requires particular attention to hygiene, surfaces and the effective removal of residues. The ability to use **hot water without generating combustion fumes**, combined with reduced noise and a configuration designed for professional handling, makes KF-E particularly suitable for food-processing and production environments. Hot water also helps remove dirt and grease residues, supporting everyday cleaning operations. ### **[DOWNLOAD THE TECHNICAL DATASHEET | KF-E](https://blog.comet-spa.com/hubfs/KF-E-DATASHEET-EN.pdf)** ### Professional Technology for Consistent Performance KF-E integrates components designed to ensure reliability and consistent performance, even during demanding professional use. The **professional 4-pole motor at 1,400 rpm**, equipped with thermal protection, works together with the **Comet LW pump**, featuring three axial pistons, a brass pump head and hot-water seals. This configuration helps maintain consistent performance when working with high-temperature water. The **high-efficiency electric boiler**, available with power ratings of 18, 24 and 36 kW, reaches a maximum temperature of **85°C** and has a **70-litre capacity**. The machine is also equipped with a **professional stainless-steel pressure regulation valve for hot water**, designed to provide precise pressure management during cleaning operations. ### Protection and Intelligent Management Systems KF-E integrates several systems designed to protect the machine and optimise its management during everyday use. The **15-second delayed Total Stop system** stops operation when the gun is not in use, while the **general shut-off activates after 20 minutes of inactivity**. The machine also features a **safety valve, boiler thermal protection and a pressure gauge with stainless-steel casing**. The professional control panel also includes **micro-leak and routine maintenance warning lights**, making it easier to monitor the machine’s condition. ### Detergent and Anti-Scale Systems KF-E features a **3.5-litre detergent tank with solenoid valve** and an **anti-scale system with pump and 3.5-litre tank**, designed to simplify product management during cleaning operations. Detergent is drawn in **at high pressure with proportional regulation**, allowing the amount of detergent to be adjusted according to the specific cleaning requirements. ## Standard Equipment The **standard KF-E equipment** includes professional components designed to make the machine ready for the main hot-water cleaning applications. The standard configuration includes: - **GH 401 gun with extension and swivel (2 O-rings)** - **Angled lance with detergent head, without nozzle** - **Fan-jet nozzle** - **Non-marking rubber delivery hose kit** The standard configuration provides operators with the **essential tools for the main professional cleaning applications**, combining ease of use with compatibility across the different KF-E versions. ## Accessories to Adapt KF-E to the Job KF-E can be equipped with a range of **professional accessories** to expand its capabilities and adapt the machine to specific cleaning requirements. Available accessories include: - angled lances with adjustable jet; - angled lances with rotating nozzle; - double-barrel straight lances; - professional guns with pressure regulator; - guns with fixed or swivel lance; - foam lances with regulator; - pipe-cleaning probes; - sandblasting/bicarbonate lance kits; - spiral suction hose kit; - swivel hose reel with rubber hose; - BLUE non-marking rubber delivery hose extension kit; - detergent nozzles for double-barrel lance; - rotating brush. The range of accessories allows KF-E to adapt to different professional cleaning tasks, from **removing stubborn dirt and residues** to cleaning pipes and carrying out operations requiring foam, sandblasting or specialised tools for surfaces and equipment. ## KF-E: Four Configurations for Different Professional Needs The KF-E range is available in four configurations, with different pressure, flow-rate and boiler-power levels: | Model | Max. pressure | Working pressure | Flow rate | Boiler power | Temperature | | --- | --- | --- | --- | --- | --- | | **KF-E 10/180** | 180 bar | 30–150 bar | 280–600 l/h | 18 kW | 60–85°C | | **KF-E 10/190** | 190 bar | 30–170 bar | 280–600 l/h | 24 kW | 60–85°C | | **KF-E 12/180** | 180 bar | 30–150 bar | 290–720 l/h | 24 kW | 60–85°C | | **KF-E 12/210** | 210 bar | 30–190 bar | 290–720 l/h | 2 × 18 kW | 60–85°C | All models share the same **150 kg structure** and dimensions of **110 × 75 × 103 cm**, allowing users to select the configuration that best matches their pressure, flow-rate and power requirements.   ### **KF-E: Professional Hot-Water Cleaning, Now Indoors Too** **Hot water, high pressure and Full Electric power:** KF-E brings professional hot-water cleaning to environments where emissions and noise require particular attention. A solution designed for the **food and wine industries, production environments and a wide range of professional applications** where effectiveness, control and reliability matter. **KF-E: Full Electric, zero emissions and the full power of professional hot-water cleaning.**     ## **FAQ** ### What is KF-E? KF-E is a professional hot-water pressure washer equipped with an electric boiler, designed to deliver high cleaning performance across a wide range of professional applications, including indoor environments. ### Does KF-E produce combustion fumes? No. The electric boiler allows hot-water cleaning **without generating combustion fumes**, making KF-E particularly suitable for enclosed environments. ### How quiet is KF-E? KF-E is **three times quieter than a pressure washer with a diesel-fired boiler**, helping improve operator comfort. ### What is the maximum water temperature? KF-E can reach a maximum water temperature of **85°C**. ### What type of pump does KF-E use? KF-E uses a **professional Comet LW pump with three axial pistons**, a brass pump head and hot-water seals, designed to provide consistent performance and reliability in professional applications. ### Where can KF-E be used? KF-E is suitable for a range of professional environments, including the **food industry, industrial sector, construction, agriculture and vehicle washing**. Full Electric technology also makes it particularly suitable for **indoor environments**, where the absence of combustion fumes and reduced noise are especially important. ### Is KF-E easy to move? Yes. The machine features **two 300 mm rear wheels and two swivel front wheels**, designed to make movement and manoeuvring around the workplace easier.   [View full post](https://blog.comet-spa.com/cleaning-en/kf-e-hot-water-pressure-washer-with-an-electric-boiler) ```json { "@context" : "http://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Comet" }, "dateModified" : "2026-09-29T09:31:54.026Z", "datePublished" : "2026-09-29T09:31:54Z", "headline" : "KF-E hot-water pressure washer with an electric boiler: the Power of Hot Water, now indoors", "image" : { "@type" : "ImageObject", "height" : 899, "url" : "https://5415755.fs1.hubspotusercontent-na1.net/hubfs/5415755/KF-E%20idropulitrice%20ad%20acqua%20calda.png", "width" : 1750 }, "mainEntityOfPage" : "https://blog.comet-spa.com/cleaning-en/kf-e-hot-water-pressure-washer-with-an-electric-boiler", "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "height" : 60.0, "url" : "https://cdn2.hubspot.net/hubfs/5415755/Comet_Spa_February2019%20Theme/Images/logo_comet_60_retina-1.png", "width" : 240.0 }, "name" : "Cleaning En" } } ```