Eemax AutoBooster HATB007240 Tank Water Heater Booster 7.2kW 240V 30A


Quantity Price Each
2 Items $439.95
3+ Items $419.95
* Note:

Weight: 4.40 lbs
MPN: HATB007240

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Nearly double your hot water with AutoBooster, and take longer hot showers.

Eemax AutoBooster tank water heater boosterGet more hot water from your current or new hot water heater by adding the AutoBooster by Eemax. It increases the efficiency and performance of a gas or electric hot water tank by 45%. It's like converting it to a much larger tank.

Buy the AutoBooster with a less expensive smaller tank, and save money versus buying larger tank alone. Plus, save room space with a smaller tank versus a larger, hefty one.

Why it is better and how it works

Eemax Distributor logo

The AutoBooster goes on an tank's hot water line to provide more hot water than with the tank alone. AutoBooster has an adjustable activation temperature which detects the inlet temperature to control when it will start boosting the tank's temperature.

For example, if the activation temperature you set is 105°F, then AutoBooster will redirect the unused power from the tank to the AutoBooster. The result is a 120°F shower temperature (typical) with less energy use.

AutoBooster Advantages

More hot water: Get almost double the amount of hot water from your existing tank. Now everyone in the house can enjoy longer hot showers.

Save energy and money: Using AutoBooster and smaller size tank (versus a bigger capacity tank without AutoBooster) will lower your energy bills. Plus, its vacation mode save energy while you are away.

Save space: It's less than 12" long, versus a 60" tall and 22" wide typical tank water heater. Add AutoBooster to a smaller tank versus a much larger one. AutoBooster is added to the tank's pipe.

AutoBooster Features:

  • Install on a hot water tank and get up to 45% more hot water
  • No additional electrical wiring needed when added to an existing tank electric water heaterETL certification for USA and Canada
  • Compact size
  • Digital controls
  • Output temperature set in 1°F increments
  • Activation temperature range setting from 80°F to 130°F
  • Outlet temperature range setting from 80°F to 140°F
  • Dial control on front of unit for quick and easy adjustments
  • Install easily on a new or existing water heater tank
  • Field replaceable element
  • ETL certification for USA, Canada
AutoBooster Gas InstallationAutoBooster Electric Installation


KW7.2 kW
Amperage Draw30 Amps
Required Breaker30 DP
Wire Gauge10 AWG copper
Water Connections3/4" NPT or push-to-connect
Dimensions (in.)8"H x 11.5"W x 3.75"D
Weight4.75 lbs.
Temperature ControlDigital
Outlet Temperature Range80°F - 140°F
Operating PressureMin. 25 PSI, Max. 150 PSI
Energy Efficiency99.8%
Certification:ETL Listed to UL 499 & CSA
WarrantyLimited Lifetime

Included fitting adapters

1/2" CF ConnectionFitting Adapter
For 3/4" MNPT from tank INLET3/4" Female NPT to 5/8" tube adapter
For 3/4" copper tube INLETPush-to-connect fitting
For 3/4" copper tube OUTLETPush-to-connect fitting

* AutoBooster ships with two (2) push-to-connect fittings and one (1) 3/4" FNPT to 5/8" tube adapter


Specifications Sheet

Installation Instructions & Owner's Manual

Eemax AutoBooster tank water heater booster Eemax AutoBooster tank water heater booster
Eemax AutoBooster tank water heater booster Eemax AutoBooster tank water heater booster

Frequently Asked Questions

Q1: What is the difference between AutoBooster and a tankless water heater with the same voltage and wattage?
A1: AutoBooster has patented engineering that automatically turns it on and off to extend the capacity of your existing tank water heater.

Q2: Can AutoBooster work with my gas water heater tank?
A2: Yes, and it requires a separate 240V 30 amp circuit.

Q3: How much of a boost of hot water will I get from the AutoBooster?
A3: Depending on your use and flow rates, AutoBooster will provide up to 45% more hot water from your tank, based on independent tests.

Q4: How is the AutoBooster wired electrically with my electric tank heater?
A4: On an electric tank water using a 30 amp breaker, the AutoBooster does not require any additional wiring.

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