Does the Zerostart Circulating Tank Heater Have a Pump?
Updated 12/10/2025 | Published 11/12/2025
Question:
What are the statistics on the pump is there actually a pump in this heater
asked by: Kenneth
Expert Reply:
Hey Kenneth. The Zerostart Thermostatically Controlled Circulating Tank Heater item # ZE43RR does not have a pump in it. This is a non forced flow circulation heater. It operates on thermosyphoning, which means cold coolant is drawn from the bottom of the engine block, heated in the tank, and is then forced to the top of the engine block.
The Zerostart item # ZE43RR is a 1,000 watt heater that is powered off of a 5' long cord that has a standard 3-prong 120v plug. The thermostat automatically switches on at 100° F and off at 120° F. The casing is made out of die-cast aluminum and measures 6-3/4" tall x 6-1/4" wide x 2-5/8 deep.
What kind of vehicle are you wanting to install this on?
You can add this information and any other questions you have where it says Reply to Jerred H and I'll be happy to answer them.
(click to enlarge)
Kenneth
12/10/2025
That's fine I don't need it anymore I went with one of your cats engine heater and then I bought a pump separate thank you.
Jerred H.
12/10/2025
Product Page this Question was Asked From
Zerostart Thermostatically Controlled Circulating Tank Heater - 120V - 1,000 Watts
- Vehicle Heaters
- Circulating Heater
- External Tank
- 120 Volts
- 1000 Watts
- CSA Approved
- Zerostart
more information >
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Jerred H.
12/8/2025
Hey Kenneth, did the Zerostart circulating tank heater end up working the way you needed for your setup? Your experience could point others in the right direction when choosing a heater for their vehicle.