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 Circulating Tank Heater - Thermostat Controlled - 100F to 120F - 120V - 1,000 Watts
- Vehicle Heaters
- Circulating Heater
- External Tank
- 120 Volts
- 1000 Watts and Up
- Zerostart
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Vehicle Engine Heaters
- Shop: Kat's Heaters Thermostatically Controlled Circulating Tank Heater - 120V - 850 Watts
- Shop: Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,200 lbs
- Shop: 4-Leaf Double-Eye Spring for 2,000-lb Trailer Axles - 26" Long
- Search Results: trailer axles
- Shop: Zerostart Circulating Tank Heater - Thermostat Controlled - 100F to 120F - 120V - 1,000 Watts
- Search Results: rooftop rv air conditioners
- Shop: Velit 2000R Mini AC for Teardrops and Truck Campers - 6.5K Btu - Non-Ducted - 12V DC - White
- Shop: GE Appliances Deluxe RV Air Conditioner - 13,500 Btu - Ducted/Non-Ducted - R32 - AC Unit Only
- Video: Review of Zerostart Vehicle Heaters - Thermostatically Controlled Circulating Tank Heater - ZE43RR
- Search Results: trailer hitch
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
- Q&A: Recommended Bike Rack and Dual Hitch Adapter for Carrying E-Bikes While Flat Towing
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Search Results: trailer tires and wheels
- Shop: Trailer Wiring
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: 5 Things to Know About Weight Distribution Hitches
- Shop: Suspension Enhancement
- Search Results: trailer lights
- Video: A Look at the Power Mountain Tallboy 6 Ton Off-Road Bottle Jack with a Military Cargo Trailer
- Search Results: trailer wiring
- Article: 30-Amp and 50-Amp RV Service: What's the Difference?
- Shop: Brake Controller
- Search Results: trailer hitch ball mount
- Article: Is It Illegal to Leave My Hitch on My Truck?
- Shop: Gooseneck Hitch
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles
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.