From job sites to equipment yards and farms, work continues when temperatures drop. This 375-watt lower radiator hose heater warms coolant and moves heat into the engine through natural circulation, helping make cold starts easier.
Equipment parked overnight at a job site, in an equipment yard, or in an unheated building can be difficult to start when temperatures drop. This 375-watt heater warms coolant in the lower radiator hose so heat can move into the engine before startup. It's a cold-weather preparation option for light industrial, medium-duty, and agricultural equipment with a compatible cooling-system layout. Two to five hours of preheating is usually enough before startup, depending on conditions.
The heater works by thermosiphon circulation. As the coolant warms, it rises toward the engine water jacket and cooler coolant takes its place. This natural movement carries warmth into the engine without a mechanical pump. For that process to work, the hose must keep rising toward the engine, with no high points or downward dips that could interrupt the flow.
This heater fits a smooth, molded lower radiator hose with a 1-1/4" inside diameter. You'll need at least 3" of straight hose for mounting, a continuous upward angle of at least 15° toward the engine, and a direct path to the engine water jacket. Check the surrounding space as well. The heater requires approximately 3-1/2" x 3" x 2-1/2" of installation clearance, including the cord connection.
Once the heater is positioned, the two included hose clamps secure it to the cut hose ends. This heater is not recommended for automotive or light truck applications.
A built-in thermostat limits the heater to a maximum temperature of 245°F (118°C). That's a limit for the heater itself, not the temperature the engine coolant will reach. The heater connects to 120V household power through a detachable cord. If the cord is damaged, you can replace it with the Zerostart replacement cord (ZE68SR) , sold separately.
Zerostart is a Phillips & Temro brand, from a manufacturer that develops engine, battery, and equipment heaters. That experience is relevant when you're preparing working equipment to start in cold weather, from industrial job sites to agricultural operations.
This heater is intended for light industrial, medium-duty, and agricultural equipment. It fits a 1-1/4" inside-diameter, smooth, molded lower radiator hose. It is not recommended for automotive or light truck applications, and a matching hose diameter alone does not guarantee proper fit.
Choose a straight hose section at least 3" long. From the heater to the engine, the hose must rise continuously at an angle of at least 15° and connect directly to the engine water jacket. Avoid high points, downward dips, and sharp bends that can trap air or prevent warm coolant from circulating. The equipment must be parked on level ground during heater operation.
Allow the engine to cool before opening the cooling system. Drain the radiator as directed, install the heater in the selected hose section, and secure both connections with the included hose clamps. After refilling, follow the manufacturer's instructions for running the engine and checking for leaks before using the heater.
Never plug in the heater before installation or when the cooling system is low on coolant. Fill and bleed the system so trapped air does not interrupt circulation or expose the heating element. The manufacturer calls for a 50/50 water and glycol coolant mixture; do not use 100-percent antifreeze.
Do not start or operate the engine while the heater is plugged in. Disconnect the extension cord from the power source, then unplug the heater cordset from the extension cord before starting the equipment or driving away.
Use a properly grounded 120V GFCI-protected outlet and an outdoor-rated, 3-prong extension cord rated for at least 10 amps. Route the power cord away from hot surfaces, sharp edges, and moving parts.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi everybody, Andy here with etrailer.com. Let's take a quick look at the Zerostart lower radiator hose heater. Now, far mornings and job sites don't stop for freezing weather. This hose heater is going to make sure that your coolant is nice and warm before it reaches the block. So engines on tractors, skid steers, and generators are going to turn over easier and they're going to run a whole lot smoother over winter. Now you're not going to have to worry about overheating or wasted energy.
A built-in thermostat is going to automatically regulate the heat, keeping the coolant in the right range for reliable starts without stressing components. And this heater is going to slip into a smooth molded 1-1/4-inch hose with a slight rise and a direct path to the engine. And then you're just going to plug this into any 120 volt outlet in your set. If you notice here, this does have a cap for that plug when it's not in use, so it's going to keep those prongs nice and clean. So that's a nice touch.
And this hose is removable, so if it ever gets damaged, you can just unplug it from the heater and the heater will be fine. And the cord, you can get replaced if it gets damaged or anything like that. This is going to give you up to 375 watts of heating power. The maximum heater temperature is 245 degrees Fahrenheit. It is CSA-approved.
Give you some measurements here. Looking at the overall height, we're pretty close to 3-inches. The overall width might be a little tricky to show, maybe about 2-1/2-inches. The overall depth, again, pretty close to 3-inches. This is not recommended for automotive or light truck applications.
Instructions are included to guide you through the installation process. You are going to get these hose clamps as well, so everything that you see here. But if you happen to have any other questions, don't hesitate to reach out to us. We wanna make sure that you're getting exactly what you want and need. Well, again, my name's Andy. Thank you for joining me.
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