HOTflow® Engine Heaters

Forced Circulation HOTflow™ Engine HeaterHOTflow® engine heaters feature an integrated pump that circulates warm coolant throughout the entire engine at uniform temperatures. Constant circulation of the coolant eliminates hotspots that can deteriorate heater hoses, harm engine seals and diminish coolant life. HOTflow® engine heaters rely on fewer heating cycles - saving up to 35% in energy consumption while extending heater element life and reducing maintenance work.

Find out how much money you can save by installing a HOTflow® engine heater on your stationary engine.

Sign up today and become "HOTSTART Certified"

HOTSTART’s HOTflow® Technician Certification Training is a program developed to train dealer and distributor technicians on the proper installation procedure for HOTflow® heaters. Click here to learn more and sign up for the class that best fits your schedule.

Looking for a Certified Technician to install your engine heater? Click here for the complete list of current HOTSTART Certified Technicians.

The HOTflow® series includes two different HOTSTART engine heater models. The smaller capacity CTM model heats engines up to 20L displacement. For engines ranging in size from 15L-100L displacement, HOTSTART offers the CSM model. HOTflow® engine heaters are available in multiple kW ratings, ranging from 1kW - 12kW. The product line features a fixed thermostat (100°-120°F/38°-49°C) and is UL Listed and CE compliant.