Hotstart Engine Heaters – Forced Circulation Heaters

Dear Customer,
Last month, we introduced Hotstart’s innovative engine heating solutions designed to improve performance, reduce wear, and ensure reliable startups. As a follow-up, we’re diving deeper into Forced Circulation Heaters and specialized models for hazardous and non-hazardous environments. These advanced systems provide efficient, consistent heating to keep your engines running smoothly—whether in marine, industrial, or oil and gas applications.
Here’s a closer look at these solutions and how they can benefit your operations.
HOTSTART’s Forced Circulation Heaters are engineered with integrated pumps that circulate heated fluids throughout an engine, oil sump, or compressor frame. These heaters ensure consistent temperature maintenance, reduce plumbing maintenance, and enhance energy efficiency, while also eliminating white exhaust smoke. Available in weathertight and non-hazardous models, they are versatile solutions for a wide range of installation environments.
In environments where explosive gases or vapors may be present, safety is critical. Hotstart’s hazardous location heating systems are IECEx and/or ATEX certified, ensuring they meet international standards for use in volatile conditions. These heaters provide powerful, reliable thermal management for oil and gas, mining, and heavy industrial operations—where dependable starts and operational readiness are essential, even in the most demanding environments.
The CLA model from HOTSTART is an IECEx-certified large capacity coolant heating system designed for use in hazardous locations. It is equipped with powerful heating options of up to 66 kW, making it suitable for the largest engine heating applications. The system’s robust design ensures safe and efficient operation in environments where flammable gases may be present, delivering consistent coolant temperature and enabling reliable engine starts.
HOTSTART’s CSA model is a compact and efficient coolant heating system designed for hazardous locations. It is IECEx/ATEX certified, making it ideal for maintaining optimal engine temperatures in gas compression and oil and gas applications. The system’s compact design allows easy installation while delivering powerful heating to ensure reliable engine readiness.
The OCLA model is HOTSTART’s largest capacity combination heating system, certified by IECEx for hazardous location applications. It efficiently heats both coolant and oil, maintaining optimal engine temperatures and preventing fluid thickening in cold conditions. This dual-fluid system is essential for oil and gas applications, where safe and consistent heating is crucial.
HOTSTART’s OLA model is the largest capacity IECEx-certified oil heating system for hazardous locations. It ensures optimal oil viscosity and efficient heating to support engine readiness in challenging environments where safety is paramount.
The OSA model is an IECEx/ATEX certified compact oil heating system, designed to maintain optimal oil viscosity even in hazardous locations. It is ideal for gas compressors and other oil and gas applications requiring safe, consistent heating.
HOTSTART’s OSE model is a compact oil heating system and provides reliable oil heating to maintain engine readiness.
For standard industrial, marine, and power generation applications, Hotstart’s non-hazardous heating systems offer reliable and efficient engine preheating solutions. Designed for ease of installation and optimal performance, these systems help reduce idling, minimize wear, and ensure engines are ready to perform when needed.
The CGM model is designed for marine engines, allowing large-displacement propulsion systems to start clean and deliver full power without costly idling or warm-up delays. This system improves efficiency and reliability, enabling engines to operate at peak performance right from the start.
The CLM heating system is specifically designed for large marine engines, allowing them to start efficiently without the need for prolonged idling. This system maintains optimal coolant temperatures, promoting clean starts and reducing wear and tear on the engine.
HOTSTART’s CLP model is a large capacity coolant heating system designed for stationary land power applications. It ensures optimal engine temperature maintenance, reducing idling and increasing operational readiness.
The CLV system preheats coolant to maintain optimal engine temperatures, eliminating unnecessary idling and fuel waste. It is particularly useful for locomotives and large diesel or gas engines used in marine vessels and mining applications, where compact size is at premium.
The CMM model is designed for large marine propulsion engines, allowing them to start clean and deliver full power without costly idling or warm-up delays. This system enhances operational efficiency and reduces maintenance needs.
Similar to the CMM, the CXM is a marine coolant heating system designed to deliver full engine power without a warm-up delay. It reduces operational costs and helps engines meet performance demands from the start.
The DLV system preheats both coolant and oil, maintaining optimal temperatures to eliminate idling and reduce engine wear. It is ideal for locomotives, diesel generators, and marine vessels requiring dual-fluid heating.
The OCSM dual-purpose heating system combines coolant and oil heating to ensure easy engine starts and minimal wear, making it suitable for marine, machinery, and backup power applications.
The OGM system is designed for marine engines, allowing them to reach full power without idling. It keeps engine oil at optimal temperature, promoting reliable starts and improved efficiency.
Find the right Hotstart heater for your needs—whether you’re operating in extreme cold, hazardous conditions, or high-performance marine environments, Hotstart’s heating solutions ensure your engines are always ready.
Contact us today for expert guidance and recommendations from Sesco Industry, your partner for precision-engineered heating solutions.


