Engine coolant heaters

Engine coolant heaters

Engine coolant heaters. They're typically installed in the engine block's coolant passages. 5L Displacement, Engine Block Heater Boat Engine Parts for Engine. These heaters warm up the engine coolant before starting the engine, preventing dry and hard starting from thicker oil in cold conditions. 2 year warranty. Give comfortable heating to your vehicle by simply installing this unit now. Oct 26, 2009 · Circulation heaters offer dependable engine starts all winter long by circulating warmed coolant through the engine. 1 day ago · Summit Racing™ Automotive Heaters. SKU # 644339. Lower Radiator Hose Heater heaters offer dependable engine starts all winter long by circulating warmed coolant through the engine. Contact heaters warm the engine as efficiently as hose heaters, with an ideal distribution of heat. Standard heater for Onan, Kohler, Generac, Olympian, Cat, and many other brands. Multiple options are available, including UL/C-US listed and CE-compliant models. Which type you choose will depend on your vehicle and needs. 183. The other option is an engine coolant heater. Onan Coolant Heater - A042V042. These heaters provide engine, fuel and hydraulic preheat and can be incorporated into a coaches heating system to provide supplemental heat. Engine Block Heater, 120V Self Circulating Engine Coolant Heater, Start Preheater Power Heating 500W Coolant Pre Heater, IP54 Waterproof Professional Electric Generator Kit $67. RE520488: Engine Coolant Heater (120V) Part Number: RE520488. 17. In cold climates the coolant heater makes it easier to start the engine; Reduces Engine Wear: By preheating the internal engine components before starting, engine wear is reduced while also creating heat for the heating, ventilation, and air conditioning (HVAC) system The coolant flows throughout the engine. Using a small circulating pump warms more of the coolant. It comprises of an electric heating element or a heating element attached to the engine's coolant system. 42 L) TundraTherm ™ is a 12 or 24 Volt diesel fired coolant heater that is designed to easily install on any type of heavy duty equipment and provide supplementary heating for engines, fluids, and key components; during operations, overnight shut-downs, or any other extreme cold weather circumstances. These engine heaters provide consistent heating to reduce downtime and are useful in a wide range of heating applications. Made from pressure die-cast aluminum tanks, HOTSTART’s SB series of heaters are the compact, heavy-duty solution for aftermarket applications requiring heat for your diesel or gas engine. HOTSTART's line of In-Block heaters mount directly into the water jacket of the engine, reducing engine wear due to cold starts by up to 50%. These are designed for commercial vehicles, minibuses, off-highway, LCV, and special vehicles, offering efficient heating solutions with capacities up to 13. Tank/Circulation Engine Heater circulates warmed coolant through the engine for easier starts,Installs in heater hose (5/8\"),Die-cast aluminium body is corrosion resistant,Copper heating element provides better heat tra Engine serial number (ESN) can be found on the engine data-plate, typically located on the engine rocker cover or the side of the gear housing. Webasto Air Top Brace for the colder seasons with an engine heater from NAPA AUTO PARTS, and avoid frozen engine fluids which can lead to damage. Warmer engine coolant during cold weather will ease the stress on starts, gives heat to your cabin much faster, warms the oil faster, and leads to a longer life for Circulation Engine Heater Solutions; Forced Flow Circulation Heater (FFCH) Battery Heaters; Coolant Dam; Specialty Heating Products; An engine block heater is a device that heats the engine block while the vehicle isn’t running. Engine heater car preheater coolant water heating preheating eberspacher parking 2000w air webasto newest 220v tank motorPhillips temro 3100046 zerostart 310 【Help Engine Start Faster】: AR87167 Engine Block Coolant Heater Kit is an electrical component of the engine block, which heats up the coolant or oil directly for better lubrication and helps your engine quickly start in winter while reducing engine and transmission wear. There are engine heaters that heat coolants or the oil directly. Fortunately, the temp sensor was in a location which allowed ice to turn to hot water, and the ECU notified the driver before the hot water turned to steam and found its way to the Powerful & Rugged Auxiliary Coolant Heater for Easy Cold Weather Starts Proheat X45 Plus is a powerful, diesel-powered engine pre-heating solution for quick and reliable cold weather starting. 3. Oct 25, 2022 · An in-line coolant heater (about $300) is spliced into the radiator hose but may not warm all of the engine block or the oil. FREE delivery Mon To appreciate the mechanics behind engine block heaters, it’s beneficial to understand their operation. Part # 30108. This style is installed in a coolant line on your vehicle. 1 - 24 of 157 results for Engine Heater - Block (Universal) Compare Filter/Refine. Heating Fluid: Engine Coolant, Water, other No pump needed (thermosiphon principle) Engine Displacement: 350 – 500 CID (5. Circulates coolant through engine block by convection when properly installed. Types of Engine Block Heaters . $124. In cold climates the coolant heater makes it easier to start the engine; Reduces Engine Wear: By preheating the internal engine components before starting, engine wear is reduced while also creating heat for the heating, ventilation, and air conditioning (HVAC) system Aug 27, 2023 · The mechanism behind this device is both ingenious and straightforward. Depend on consistent, reliable heating with the proven design of the TPS Thermosiphon heater. Reaching maximum potential temperature in half the time, the Forced Flow Circulation Heater warms the coolant throughout the entire engine for uniform heat distribution. 5-5. These devices warm up the engine oil or coolant, depending on the type of block heater, promoting easier and quicker starts by improving fuel combustion, thus minimizing wear on the engine’s components. Looking for the best place to get your ONAN ENGINE COOLANT HEATER /CUMMINS? Look no further! Our online store offers the original OEM part at the best price on the market. With our fast shipping options, you'll have your ENGINE COOLANT HEATER /CUMMINS in no time. Maximize engine performance, reduce failures & save on fuel costs. Don’t let cold weather stop your genset from running when it is needed most. 7-day programmable engine block coolant heater, full kit, 5kw/17000BTU. 99. Part Number Voltage Wattage; CL130100-100: 120: 3 kW: CL130108-200: 120: 3 kW: HOTSTART’s TPS thermosiphon heating system is a coolant Aug 21, 2024 · An engine block heater is a device that preheats the engine block of a car before starting it, particularly in cold weather. Featuring a built-in high-limit thermostat, optional flow-through control thermostat, attached power cord and multiple heat power and voltage options, end • NEVER PLUG IN HEATER IF ELEMENT IS NOT IMMERSED IN COOLANT, AS SHORTENED HEATER LIFE WILL RESULT. Some find coolant heaters easier to install and maintain. Part Number Voltage Wattage; CB115100-000: 120: 1. The microprocessor controlled compact fuel-fired coolant heater comes in 12 Volts DC in the diesel version. HOTSTART's DLV Dual Fluid Electrical Engine Heater is designed to preheat coolant and oil to heat the prime movers of locomotives as well as diesel and gas engines of generators, marine vessels and… read more Jul 17, 2006 · HOTSTART ENGINE HEATER TPS151GT10-000 COOLANT PRE-HEATER - Original - 1 YEAR WARRANTY. This eases the strain on the starter when the vehicle is started. 9 out of 5 stars The bolt on heater is the oldest engine block heaters, it is installed inside the freeze plug of the engine, and the engine coolant directly contacts the bolt on heater. Oct 16, 2020 · This type of heater replaces the existing core plug, also commonly referred to as the frost plug or freeze plug, and directly heats coolant within the engine using an element that sits in the Nov 19, 2004 · HOTSTART engine heaters maintain an engine's operating temperature during downtime and serve as an excellent cold weather or emergency starting aid while eliminating needless idling. It circulates the coolant through while heating it. ONAN ENGINE COOLANT HEATER /CUMMINS 333-0588-01 . As the engine heats up, you can easily start it. In Stock. $5690. Kat's 2 1/4in 1000 Watt Freeze Plug Diesel Engine Heater $ 114 99. The engine block heater can warm the block, motor oil, and coolant to make starting your car easier. 6 L Duramax Diesel Engine Chevy GMC 2500 3500 Mini Heat Exchangers. Nov 15, 2023 · A block heater warms up the engine oil and block directly, while a coolant heater warms up the engine coolant, which in turn warms up the engine block and oil. The Polar Heat P3 is a circulating block engine heater with a pump for a soot-free operation and efficient The Polar Heat P3 Engine Heater has a compact, easy to install and ergonomic design with an aluminum casing. All Pick Up in Store Aug 15, 2023 · Diesel coolant heaters, also known as engine block heaters or coolant preheaters, are devices designed to warm up the engine coolant in a vehicle’s engine before starting it. 95 $ 67 . Ideal heat distribution and efficiency. Sep 21, 2007 · Ideal coolant heater for Generator sets. 10. 178. Pre-heaters typically utilise electric or fluid-based heating elements to warm the engine fluids. Thermex Systems is a design-build manufacturer of custom engine heaters for heavy equipment and trucking applications. HVACSTAR TPS151GT10-000 590-893 Engine Block Heater 1500 Watt 120 Volt 1500W 120V Option 100-120F Coolant Pre-heater 4. • NEVER RUN ENGINE WHILE HEATER IS PLUGGED IN, AS ELEMENT BURNOUT WILL RESULT. Like a freeze-plug-type block heater, a coolant heater must match the make and model of your vehicle. Magnetic Heaters: Ideal for vehicles without built-in block heater ports, magnetic heaters attach to the oil pan or other metal surfaces, providing localized Jun 30, 2015 · TPS Engine Heater Thermosiphon Heating System . Browse now. Some work to heat the oil or coolant directly, while others heat the block or engine itself. According to different design and different occasion, it can be divided into the following models: Oil pan engine heater. Jul 17, 2006 · Zerostart 3500043 Engine Block Heater for Ford, Mercury, Lincoln, International, Caterpillar, Detroit Diesel, Hino, Mack, Nissan, 3/4" NPT Thread | CSA Approved | 120 Hose heaters may trigger coolant temperature sensors introduced as a result of the WLTP. Allows cab to heat up faster, creates easier start-ups, and prevents frozen hoses. HOTflow engine heaters rely on fewer heating cycles — saving up to 35% in energy consumption while extending heater element life and reducing maintenance work. Feb 21, 2024 · Heater hotstart coolant heaters vac precalentador watts 120v 1kw watt tps generacCoolant heater webasto thermo evo released america north its has top Dorman® 902-062Engine coolant heater. Get it as soon as Wednesday, Aug 21. Kat's Engine Cooling System Heater is backed by a 1-year limited warranty. 1 out of 5 stars 53 Amazon's Choice Jul 6, 2018 · The operating principle of Universal engine heaters is the thermo-syphon, which means heating the coolant and circulating it through the entire motor block. 4 kW/hr to 5 kW/hr. $558. Espar’s Hydronic 16 Coolant Heater is typically used for the Large Coaches, Boats and Off-Road Engines. HOTSTART’s TPS thermosiphon heating system is a coolant preheater, developed to maintain optimal temperatures for diesel and gas engines in stationary land power, marine, construction equipment, and truck applications. Utilize engine coolant to heat small engine oil pans and small hydraulic reservoirs. Most heaters warm the coolant, which then carries the heat through the water jackets in the block and provides an even level of warmth throughout most of the motor. D5 CL Engine Heater. Engine Cooling System Heater KitExternal Circulating Coolant Heater Please contact us with questions about compatibility1500 Watt, 120 VoltDesigned for 26-40 quart cooling systems A powerful and efficient way to keep your vehicle's engine warm even in the coldest temperatures. 5" Engine Heater Hose Size: 5/8 in. hotstart engine heater kim tps101gt8-000 coolant pre-heater - original - 1 year warranty dummy Thunder Parts ***ORIGINAL HOTSTART Engine Heater TPS181GT10-000 - Coolant preheater | 1800 watts 120V 15A | ON: 100°F (38°C) OFF: 120°F (49°C) | 1 Year warranty! Another style of Kat's engine heater is a circulating coolant heater. The heated coolant provides heat directly to the engine components. Pros Jul 29, 2021 · The preheating engine coolant brings longevity to your engine life. Preheat your engine by using on-board diesel fuel and battery systems. Oct 30, 2015 · Typical price: $132. 5 - 60Hz. FREE delivery. Warming the engine to the proper temperature also reduces idling and cranking time, saving fuel and increasing battery life. Aug 23, 2022 · Engine block heaters play a crucial role in ensuring the smooth functioning of your vehicle, especially in colder temperatures and climates. At the same time, also the oils lubricating the engine components HOTSTART systems heat and circulate coolant and oil in engine blocks, maintaining optimal engine temperatures for quick, easy starts when needed. 5L Displacement, Engine Block Heater Boat Engine Parts for Engine 10 $56. 00. Pre-Heat: Diesel and Gas engines, construction equipment, trucks, marine and industrial applications. It is typically timer operated and can be programmed to begin work up to an hour before you are ready to start work, pre-heating the entire cooling system and providing an easier Not all engine heaters are "block" heaters, and the term "block" refers to the lower part of the engine. Engine block heaters come in different types, like core plug heaters, dipstick heaters, and engine-warming blankets. Dimensions: 3 in. Summit Racing™ automotive heaters are designed to add a universal heat source to any application where an engine coolant system exists. 22. Zerostart 3308001 Series 8000 Light Duty Circulation Heater, 5/8" Diameter Inlet/Outlet | CSA Approved | 120 Volts | 750 Watts In-Block Heaters. This is often where it was fitted with a block heater if it were to be sold in a location with brutally cold winters. Simply follow the included instructions to connect the plumbing lines and wiring, then enjoy immediate warmth. Apr 12, 2018 · Engine Heater, Self Circulating Generator Coolant Pre Heater with Thermostat, 120V 500W Aluminum Alloy 0-2. Circulating coolant heaters ensure dependable engine starts all year long. Integrated heat exchangers from Webasto harness the engine's residual heat, integrating seamlessly into the coolant circuit. Sep 9, 2016 · But when we mix anti-freeze (ethylene glycol) and water together, the coolant’s capacity for carrying heat out of the engine is reduced. The Polar Heat P3 Engine Heater has a compact, easy to install and ergonomic design with an aluminum casing. Benefits. With an integrated ceramic thermostat control, the P3 provides uniform engine heat, reducing engine wear from cold starting. Pre-Heat: Diesel and Gas engines, construction equipment, trucks, marine and industrial applications ; Heating Fluid: Engine Coolant, Water, other Fluid Capacity: 0. It’s a kind of silicone rubber heating pad, with a heating cable in the middle of the silicone rubber. Now headquartered in Minnesota, Zerostart's products include battery heaters, diesel fuel warmers and heaters, universal engine block heaters, magnetic block heaters, and engine heater replacement parts. Drain and flush cooling system to remove contaminants. if, and I repeat, if, the frostheater resulted in my highway 40 mpg, over that ten miles, it would save 1/3 minus 1/4 of a gallon, or 1/12 of a gallon. Diesel engine coolant heaters eliminate cold starts. Oct 26, 2009 · Zerostart 2204037 Circulation Heater 5/8" Diameter Inlet/Outlet | CSA Approved | 120 Volts | 1500 Watts . HOTSTART thermosiphon engine heaters maintain an engine's operating temperature during downtime and serve as an excellent cold weather or emergency starting aid while eliminating needless idling. Hydronic D16 – 54,630 BTU/hr. Sep 11, 2018 · When the engine was restarted, the water/coolant was unable to flow between the engine, radiator, and HVAC system to remove excess heat energy from the engine. . Select store for pickup availability . This translates into short warm-up periods with heat immediately perceivable in both the engine and in the coolant system. 4. About Thermex Engine Heaters. 7 out of 5 stars. com website) that reveals that at a 50/50 mixture of water and anti-freeze, the specific heat of that mixture is only 86 percent as efficient as ENGINE HEATER TPS151GT10-000 COOLANT PRE-HEATER - Original - 1 YEAR WARRANTY. If your vehicle has a block heater port, locate an open port in the engine block. CB Engine Heater. The applicable generator displacement is 2. 59 $ 56 . It assures fast defrost and heater action while gently decreasing engine emissions associated with cold starts. HOTSTART's line of In-Block heaters mount directly into the water jacket of the engine and can reduce engine wear due to cold starts by up to 50%. [4] Alternative methods of warming an engine include: [5] Despite its small footprint, efficient forced circulation allows the HOTflow® CTM system to heat engines up to 20 liters in displacement, allowing for a wide variety of weather-protected small engine applications. MAIN FUNCTION: The 1000W heater is mainly used for preheating the coolant of various types of generators, convenient and practical, with high efficiency. 13 Oct 31, 2015 · KIM HOTSTART ENGINE HEATER TPS101GT8-000 COOLANT PRE-HEATER - Original - 1 YEAR WARRANTY. 5 kW: CB115108-200: 120: HOTSTART’s TPS thermosiphon heating system is a coolant preheater Jan 15, 2024 · It is a 1000 watt powerful block heater that works directly on the coolant and engine saving lots of time for the buyers. Great Prices for the best vehicle heaters from Kats Heaters. Heater Wattage: 1,500 Watt: Tank Circulation Engine Heater Height: 13. Reduces cold weather viscosity; Increases productivity – reduces idle equipment and workers waiting for hydraulic to warm up; Reduces pump cavitation and resulting damage; Versatile design for use on various equipment Now keep your motor car’s engine warm with our coolant heaters. Designed for coolant systems with a 26- to 40-qt capacity, this external tank heater circulates warm fluid to your engine block, heater core, and radiator in the cold. Get optimal generator performance with genuine Onan parts. 5 - AMPS: 12. Buy now for Curbside Pickup! You Earned It: 20% Off Code: LABORDAY May 4, 2022 · Coolant is a water-based liquid that works to draw heat from your engine. x 9 in. 00 $ 124. Both types of heaters help to reduce engine wear and tear caused by cold starts, but coolant heaters are generally more efficient. In an emergency, having full-load power in 10 seconds can be the difference between a minor inconvenience and a major catastrophe. Integrated into the engine’s coolant system, coolant heaters circulate the engine coolant over a heat exchanger to warm the engine and related components such as motor oil, fuel injectors, cylinders, and engine gaskets. The different types of engine heaters include frost plug heaters, oil pan heaters, dipstick heaters, and in-line heaters. The engine block heater has the following major types: Frost Plug Heater; Engine Warming Blanket; Oil Pan Heater Oct 25, 2018 · Engine preheater can also be called as in-line coolant engine heater, in-line coolant heater, in-line engine heater, etc. This includes cars, trucks, UTVs, and even marine vessels. Diesel or gasoline fired, 12V or 24V models available. Some engine heaters are simple to install and can be used on all vehicles. Recycle or dispose of engine coolant HOTSTART ENGINE HEATER TPS151GT10-000 COOLANT PRE-HEATER - Original - 1 YEAR WARRANTY. Not all engine heaters are "block" heaters. An integrated pump circulates heated coolant to warm the engine block, making starting easier and reducing start-up engine wear. 6 out of 5 stars. The Polar Heat P3 is a circulating block engine heater with a pump for a soot-free operation and efficient Dec 5, 2023 · Block heaters typically plug into a regular 110-volt outlet, and the heater then warms the engine block and important internal fluids like the engine oil and coolant. The liquid is circulated into the engine through a hose into gaps or ‘passages’ in the engine block. Fluid-based systems use a separate fuel or coolant circuit to transfer heat to the engine. Thermostatically controlled for simple adjustments. 7–8. 5 days ago · Immersion Heaters: These heaters directly heat the engine coolant, promoting quick warm-up times and smoother starts. Oct 10, 2007 · Zerostart 3200003 Lower Radiator Hose Heater For 1-1/2" Hose | CSA Approved | 120 Volts | 600 Watts . They also maintain fluid temperatures for reliable, smooth engine starts. PH53W. Marked: 52746 / Replaces TPS101GT10-000, Generac 84918A, 084918A, some Katolight, Kohler & Onan generator heaters, & many others. Sep 13, 2023 · Features 1. KSACORT Coolant Heater Engine Heater Diesel Coolant Circulation Heater 12V 5KW for Cars Truck and RV silver HE-1. 1500W 120V Option 100-120F Engine Heater Coolant Pre- Heater TPS151GT10-000 590-893 590893 084918G Compatible with Generators Tractors Buses Trucks Boats Some Cars. Engine Block Heater Types Most modern diesel trucks come with block heaters already installed, though as mentioned earlier, they may not come with the cord. PH51W. Circulation heaters offer dependable engine starts all winter long by circulating warmed coolant through the engine. 11 gal (0. We’ve created a chart (pulled from the engineeringtoolbox. 7L, the rated power is 1000W, and the current is 4. Electric pre-heaters are installed in-line with the engine's coolant system or oil lines, and they operate independently from the vehicle’s main engine. By circulating warmed coolant through the engine, it insures fast starts for critical applications, quick acceptance of loads, reduces fuel consumption, emissions and engine wear. Their goal was originally aimed at keeping vehicles starting despite the cold Canadian mornings. Standard Delivery by Aug. Typical: $63. Brand: Kat's: Contents: External Heater & Accessory Kit: Manufacturer: Five Star Manufacturing: Heater Recommended Application: Application Specific: Tank Circulation Engine Heater Fluid Capacity: 26 - 40 qt: Heater Element Material: Copper The most common type of block heater is an electric heating element in the engine block, which is connected through a power cord often routed through the vehicle's grille. HEATER INSTALLATION PROCEDURE PREPARATION 1. Engine block heaters designed and tested for each individual engine application. Manufactured under the Zerostart / Temro brands, several types of engine block heaters are available to meet your specific needs, including freeze plug heaters, threaded immersion heaters, plate-style heaters and cartridge heaters. Engine Heater, Self Circulating Generator Coolant Pre Heater with Thermostat, 120V 500W Aluminum Alloy 0-2. The hot coolant transfers its heat to the engine and increases the engine temperature up to the normal temperature. Skip to content CALL FOR SUPPORT: 1-877-508-3900 Ensure Cold Weather Starts with Engine Block Heaters. This strategic placement allows it to efficiently warm the coolant, which in turn circulates through the engine, providing an even distribution of heat. The Engine Block Heater is typically connected in the middle of the heater hose. Built for the harshest freezing temperatures, our engine heaters and diesel-fired coolant heating systems keep your fleet running and minimize downtime. Some models require AM134805 adapter - See parts catalog for usage Jan 19, 2013 · on my ten mile drive to work, I usually see 30 mpg, due to the warm up. These types of heaters are installed inside a radiator hose or in place of a freeze plug. 1,500 W/120V external circulating coolant heater kit includes power cord, clamps, hose Y-fitting, mounting bracket and engine fitting. FREE delivery Tue Feb 14, 2023 · This typically takes removing coolant and adding coolant back into the system after the block heater is installed. Convection heating allows coolant to naturally rise from the heater and circulate through the engine's water jacket without the use of a pump. 2 L) Volts: 120v - kW: 1. Aug 17, 2021 · HOTSTART Engine Heater TPS181GT12-001 - Coolant preheater - Original dummy JZGRDN Block Heater Cord 84303149 19301659 Compatible with 2001-2018 6. HOTSTART's CLV Single Fluid Electrical Engine Heater is designed to preheat coolant to heat the prime movers of locomotives as well as diesel and gas engines of generators, marine vessels and mining… read more Constant circulation of coolant eliminates hotspots that can deteriorate heater hoses, harm engine seals, and diminish coolant life. Mar 7, 2018 · Engine-Coolant Diesel Block Heater. 59 0:35 Attached to the engine cylinder block, the engine coolant heater plugs into a 120-V electrical outlet to warm the engine for fast cold-weather starts. Some block heaters are designed to replace one of the engine's core plugs and therefore heat the engine via the coolant. Optimum heat output: The efficient coolant heater gives optimum heat output ranging between 2. HOTSTART systems heat and circulate coolant and oil in engine blocks, maintaining optimal engine temperatures for quick, easy starts when needed. 2A, ensuring low power consumption. Our new PTC contact heater eliminates this issue and is the best solution for many vehicles. 100+ bought in past month. Warming the engine to the proper temperature also reduces idling and cranking time, saving fuel and minimizing maintenance. Kat's Heaters Thermostatically Controlled Circulating Tank Heater - 120V - 1,500 DIESEL COOLANT HEATERT / ENGINE PRE-HEATER - The Hydronic D5 generates 17,500 BTU of heat for quickly pre-heating your trucks engine on those cold winter mornings. Coolant Heater Parts. 0 kW. Thermosiphon heaters are mounted compact engine heaters that help circulate coolant without complicated requirements. 00 $ 558. Instead of connecting to the bottom of the engine, this type of block heater connects to a radiator hose. It effectively preheats the vehicle engine. 95 FREE delivery Fri, Aug 30 Block heater designs differ based on which parts of the engine they focus on. 50+ bought in past month. 1 out of 5 stars. ENGINE HEATER TPS151GT10-000 COOLANT PRE-HEATER - Original - 1 YEAR WARRANTY. Sep 24, 2019 · Types of Engine Heaters. zho hsvbby hymnt vnruae rssjxix tqb vnjp rlkul yjhbfls cjer