Hubbell Water Heaters

Hubbell J639 Electric Booster Heater with 6-Gallon Storage and Stainless Steel Tank

SKU: J639
$4,184.25
/each
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Hubbell J639 Electric Booster Heater with 6-Gallon Storage and Stainless Steel Tank

Electronic Controller with Low Water Cut-Off and Leak Detection

Built for demanding dish rooms, this 39 kW electric booster heater delivers reliable hot water support with built-in safety monitoring and a durable stainless steel tank.

  • 39 kW electric output supports high-demand commercial dishwashing applications.
  • 6-gallon storage capacity helps maintain consistent hot water availability.
  • ASME stamped stainless steel tank with CFC/HCFC-free closed-cell foam insulation.
  • Electronic display controller includes low water cut-off and leak detection.
  • Includes pressure reducing valve with by-pass, T&P gauge, and T&P relief valve.
  • Stainless steel exterior with adjustable plastic legs for flexible installation.

Overall Dimensions:

18.0"W x 29.13"D x 18.0"H

Product Weight:

110.0 lb

Electric Heating Output

39 kW output provides strong heating performance for booster heater applications.

6-Gallon Storage Tank

Storage capacity helps maintain a ready supply of hot water during peak demand.

ASME Stamped Stainless Steel Tank

Durable stainless steel construction designed for commercial use.

Closed-Cell Foam Insulation

CFC/HCFC-free insulation helps retain heat and improve efficiency.

Electronic Display Controller

Digital controller simplifies operation and monitoring.

Low Water Cut-Off

Helps protect the unit by preventing operation at unsafe water levels.

Leak Detection

Built-in leak detection adds an extra layer of equipment protection.

Pressure Reducing Valve With By-Pass

Included valve helps manage incoming pressure and system flow.

Temperature and Pressure Gauge

Allows quick visual monitoring of system conditions.

Temperature and Pressure Relief Valve

Adds pressure and temperature safety protection.

Stainless Steel Exterior

Corrosion-resistant exterior is suited for commercial kitchen environments.

Adjustable Plastic Legs

Helps with leveling and installation.

Type Booster Heater
Installation Type Floor Model
Capacity 6 Gallons
Watts 39 kW
Material Stainless Steel
Shipping Width 18 Inches
Shipping Depth 30 Inches
Shipping Height 18 Inches
Shipping Weight 110 Pounds
Selling Unit Each
Units Per Case 1

Certifications & Compliance

Certified badge of UL Certified
UL Certified

Warranty & Protection

1-year parts and labor; 10-year tank only, non-pro-rated.

Documents

PDF Cutsheet PDF Download PDF Owner's manual PDF Download PDF Parts list 1 PDF Download PDF Warranty PDF Download PDF Parts list 2 PDF Download PDF Catalog PDF Download

Frequently Asked Questions

It has a 6-gallon storage capacity.
It includes an electronic display controller with low water cut-off and leak detection, plus a temperature and pressure gauge and relief valve.
The tank is ASME stamped stainless steel.
The tank and components carry a 1-year parts and labor warranty, and the tank only has a 10-year non-pro-rated warranty.
Yes. It uses CFC/HCFC-free closed-cell foam insulation.

Need Help Deciding?

Our equipment specialists can help you match specs to your kitchen layout, electrical capacity, and menu requirements.

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or call (888) 307-5030