HOTSTART Engine Heaters
— All Products
The complete HOTSTART product line — engine coolant heaters, lube oil heaters, battery heaters, immersion heaters, control systems, and OEM replacement parts. Stocking distributor with application engineers on staff.
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1) TPS Heaters
Affordable and versatile thermosiphon coolant preheaters for small engines for weather-protected applications. Thermosiphon technology utilizes natural convection: the heating element warms the fluid; the warmed fluid expands and rises, circulating through the system and cooling in the process; then it becomes heavier, and gravity pulls it back down for another heating cycle. TPS heaters can heat water or coolant mix, but require vertical installation. TPS models are available with power rating up to 2000 watts and for engines with displacement of up to 700 cubic inches (11.5 liters).
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2) Weathertight Thermosiphon Heaters
CB, SB, CL, SL, and WL heaters are compact, low-maintenance thermosiphon devices primarily designated to heat coolant mix. They can be mounted horizontally, vertically, or horizontally at an angle.
CB & SB Heaters
CB and SB models have power ratings up to 2500 watts. They are suitable for small engines with up to 800 cubic inches (13.1 liters) displacement. SB models come with a power cord; CB models are to be hardwired.
Shop CB Heaters → Shop SB Heaters →CL & SL Heaters
CL and SL models provide advanced heating in the same compact design. Power ratings of SL heaters are from 3000 to 4000 watts and for CL heaters are 3000 to 5000 watts. These models will be great for medium-sized engines. Engine displacement ratings: CL heaters — from 800 to 1350 cubic inches (13.1 – 22.1 liters), SL heaters — from 800 to 1650 cubic inches (13.1 – 27.0 liters). SL models come with a power cord; CL models are to be hardwired.
Shop CL Heaters → Shop SL Heaters →WL Heaters
WL models are 3-phase heaters available with power ratings from 2500 to 5000 watts and for engine displacement from 600 to 1650 cubic inches (9.8 – 27.0 liters). WL models are to be hardwired.
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3) Thermosiphon Heaters for Hazardous Locations
EE models are coolant mix heaters approved for hazardous locations (North American Listed Class 1, Group D components).
This model line includes 1 and 3-phase configurations with power ratings from 1500 to 5000 watts suitable for engines with displacement from 500 to 1650 cubic inches (8.2 – 27.0 liters). Just like weathertight thermosiphon heaters, EE heaters can be installed horizontally, vertically, or horizontally at an angle. No power cord, so these heaters need to be wired directly into the main electrical system.
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4) HOTflow Heaters
HOTflow forced circulation engine heaters relay on a build-in pump to move preheated coolant evenly throughout the engine. These heaters need less heating cycles compared to thermosiphon heaters, resulting in less energy consumption and longer heater life. The family includes CTM, CKM, and CSM models. All models are suitable for weather-protected applications and can heat water or coolant mix. HOTflow heaters are ideal for standby generators for emergency power systems were full load is required within seconds.
CTM Heaters
CTM models: small engines with up to 1200 cubic inches (20 liters) displacement; power ratings are up to 2500 watts; require vertical installation.
Shop CTM Heaters →CKM Heaters
CKM models: medium-sized engines with displacement from 1000 to 3000 cubic inches (15–50 liters); power ratings are from 3000 to 6000 watts; can be installed straight horizontally or vertically.
Shop CKM Heaters →CSM Heaters
CSM models: heavy-duty large engines with up to 6000 cubic inches (100 liters) displacement; up to 12 kilowatts power ratings, 1 and 3-phase configurations.
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5) EVRHEAT Heaters
EVRHEAT forced circulation model line was created with precise temperature control in mind. Its sensors and controls respond to a change in coolant temperature as tiny as just one degree.
These heaters feature integrated pump for even heat distribution and LED display with status indicators. Efficient power management of EVR20 models allows up to 45% energy savings in compare to thermosiphon heaters, and up to 20% energy savings even in comparison to CTM heaters. EVR20 heaters are suitable for small engines with up to 1200 cubic inches (20 liters) displacement. Model line-specific features: up to 2500 watts power ratings, vertical mounting only, IP66 system ingress.
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6) In-Block Heaters
Hotstart offers immersion in-block coolant heaters for most leading makes and models of heavy-duty truck engines such as Caterpillar, Cummins, Detroit Diesel, Deutz, John Deere, Mack, Perkins, and others. The in-block heaters are designed in push-in, thread-in, and plate-type styles for direct installation into the water jacket of the engine block. Hotstart offers selection tool that allows to chose the heater based on engine manufacturer and model.
Not sure which in-block heater fits your engine?
Call our application professionals — we'll look it up by engine make, model, and year.
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7) Lube Oil Immersion Heaters
OW and OE heaters are engineered to heat lubrication and gear oil. OW models are weathertight. OE models are suitable for hazardous locations (Class I, Group D). Both OW and OE heaters thread directly into the engine oil pan. Choose a heater of OW or OE model for small and medium oil tanks up to 30 gallons (113 liters) and in applications required heating power ranging from 50 to 500 watts. Please keep in mind that for heating oil of medium weight viscosity (such as gear oil), Hotstart recommends using heaters with low watt density.
OW Lube Oil Heaters
Suitable for small and medium oil tanks.
Shop OW Heaters →OE Lube Oil Heaters
OE models are suitable for hazardous locations (Class I, Group D), also for small and medium oil tanks.
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8) Industrial Immersion Heaters
For heavy-duty industrial applications, select one of E-Series models. This line of Hotstart heaters is the most versatile. Available configurations include weathertight and hazardous location modifications, 1-phase or 3-phase, from 750 watts to 36 kilowatts, NTP thread or V-clamp fitting, and for oil capacity from 30 gallons (113 liters) to 90 gallons (341 liters) and more. Most popular E-Series models are available to buy online, but please call or email us if you are interested in high-wattage and high-capacity heaters.
E-Series Weathertight (E0-W)
Weathertight E-Series heaters (with "W" in the middle of their part number can handle not just oil, but a wide range of industrial liquids including hydraulic fluid, water, coolant mix, antifreeze, and asphalt
Shop E-Series Weathertight →E-Series Hazardous Location (E0-E)
Hazardous location E-Series heaters (have "E" in the middle) can additionally heat diesel fuel and petroleum products.
Shop E-Series Hazardous →Shop by Product Family
9) Heating Pads for Oil and Fuel Tanks
For a small metal oil pan, water or diesel fuel tank, or hydraulic oil reservoir where drilling or penetrating its walls is impractical, go with Hotstart AF model silicone heating pads. They can be installed easily by peeling-and-sticking. Such external installation minimizes the risk of fluid leaks and prevents direct contact between the heating element and sensitive oils. Silicone pads provide heating power up to 400 watts and come in sizes: 4 by 5, 5 by 6, and 6 by 8 inches.
Shop Tank Heating PadsShop by Product Family
10) Battery Heating Pads and Wraps
KB Battery Heating Pads
Hotstart KB model heating pads are suitable for lead acid batteries of 4D and 8D sizes. A selection of pad styles and cord options allows connecting pads for heating multiple batteries. Heating power is up to 75 watts.
Shop Battery Heating Pads →BW Battery Heating Wraps
Battery heating wraps BW models are also developed for lead acid batteries. The wraps are made of durable vinyl and available in sizes tailored for wide variety of batteries: 22NF, 24, 24F, 24H, 24R, 24T, 25, 27, 27H, 34, 34R, 35, 75, 78, GC2, 30H, 31, 2E, 4D, 6D, and 8D battery groups. Heating power of the wraps ranges from 50 to 160 watts depending on their size. An adjustable strap and a buckle help securing the wrap around the battery. Power cords are sold separately, so remember to order a cord suitable for your application.
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11) Hotstart JBC Control Systems
Control systems (junction boxes) provide fast, efficient installation for Hotstart engine heaters. All Hotstart heaters with thermostat, operating on 3-phase current (at any voltage), require the use of a control system with a 3-pole contactor. All Hotstart heaters with thermostat, operating over 480V (1 or 3-phase) require a control system to reduce the primary voltage to 120V for the control circuit. Using a control system on all heaters above 277V will increase thermostat life.
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12) Hotstart Replacement Parts and Accessories
Hotstart offers variety of replacement parts and accessories for its heaters: thermostats, sensing units, tanks, heating elements and element o-rings, mounting brackets, power cords, cables, fittings, connectors, hoses and other parts.
Cords and Accessories
Power cords, cord accessories, and cord connectors for all HOTSTART heater models.
Shop Cords →Thermostats and Accessories
Replacement thermostats, thermostat wells, sensing units, harnesses, and temperature controls.
Shop Thermostats →Replacement Heating Elements and O-Rings
Replacement heating elements and element o-rings for all HOTSTART heater series.
Shop Elements →Heater Tanks and Terminal Boxes
Replacement tanks and terminal boxes for CB, CL, CSM, and other HOTSTART heater series.
Shop Tanks →Hoses and Accessories
Replacement hoses, connectors, fittings, gaskets, and valves for HOTSTART heater plumbing.
Shop Hoses →Mounting Accessories
Mounting brackets and clamps for all HOTSTART heater models and installation configurations.
Shop Mounting →Electrical Components
Breakers, cables, contactors, conduit fittings, enclosures, fuses, relays, switches, and other electrical parts.
Shop Electrical →Other Parts and Accessories
Additional HOTSTART accessories and miscellaneous parts not listed above.
Shop All Parts →Industries & Applications
Where HOTSTART Heaters Are Used
HOTSTART heaters protect engines and equipment across demanding industries worldwide.
Ready to Order? We Stock the Full HOTSTART Line.
Application engineers on staff. Same-day shipping available. Emergency orders accepted.
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Hotstart EVRHEAT Series 20
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Hotstart JBC Control Systems
Control systems allow for quick electrical installation of all HOTSTART engine heaters....
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Hotstart CSM Engine Heaters
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Hotstart TPS Heaters
HOTSTART’s thermosiphon TPS engine heater is a coolant heater developed to maintain...
