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Why you’ll love it

RestaurantSupply.com is your trusted source for Hubbell electric booster heaters.

  • Authorized Hubbell dealer, ensuring genuine commercial restaurant equipment and manufacturer support
  • Fast shipping available on in-stock Hubbell J639T electric booster heaters
  • Competitive pricing backed by a 30-day price match guarantee
Additional Question? Ask an Expert

Hubbell J639T Electric 39 kW Booster Heater with 6 Gallon Storage Capacity

Hubbell  |  MFG #: J639T  |  Item #: 453123
Item: #453123

Technical details
Manufacturer Hubbell Water Heaters
Model Number J639T
Manufacturer Part # J639T
Width 11" - 19"
Wattage 20 - 40 Kilowatts
Height 18"
Width 18"
Depth 29.13"
Weight 110 lbs
UL Yes
UL EPH Yes
cUL Yes
NSF Yes

About this item

Product Details

The Hubbell J639T Booster Heater Electric 39.0 KW is a high-capacity commercial water heating solution designed for foodservice environments requiring reliable hot water at volume. Featuring a durable ASME stamped stainless steel tank insulated with CFC/HCFC-free closed cell foam, this booster heater delivers consistent performance in intensive applications. Its electronic display controller with low water cut-off and leak detection ensures operational safety and simplified maintenance. Equipped with adjustable plastic legs and pressure-reducing valve with a bypass, it is engineered for hygienic, efficient hot water distribution in demanding kitchen settings.

Top Hubbell J639T Features

The Hubbell J639T booster heater is optimized for commercial foodservice workflows, offering a 6-gallon storage capacity with a 39.0 kW electric power output. Its robust stainless steel construction ensures longevity, while electronic controls facilitate precise temperature management. The unit's leak detection and low water cut-off enhance safety, and its versatile mounting options simplify integration into tight spaces. Designed for high-demand environments, it supports rapid hot water generation and efficient workflow continuity.

  • High wattage performance: 39.0 kW power capacity for quick heating
  • Durable construction: ASME stamped stainless steel tank resists corrosion
  • Ease of maintenance: Electronic display with leak detection simplifies servicing
  • Optimized for commercial kitchens: 6-gallon storage supports peak throughput
  • Flexible installation: Adjustable plastic legs and pressure valve ease setup and adjustments

Ideal for high-volume kitchen operations requiring consistent hot water supply.

Hubbell J639T Technical Specs

The Hubbell J639T model is an electric booster heater requiring a three-phase power supply with a wattage of 39.0 kW, designed for 18" width and 29.13" depth, and standing 18" tall. It weighs 110 lbs and is constructed with a corrosion-resistant stainless steel exterior finished in a durable coating. The unit operates within a standard safety and compliance framework, including UL and UL EPH approvals, with NSF certification for water safety standards. Its self-contained, electrically powered system offers a 6-gallon storage capacity, suitable for applications demanding moderate throughput. Maintenance involves routine inspection of electronic controls and leak detection systems, with disassembly for internal cleaning accessible through external panels. Dimensions enable versatile placement in both undercounter and prep area installations, and its operating temperature range suits typical hot water needs in commercial kitchens.

  • Electrical requirements: 3-phase, 208-240V, 39.0 kW operation
  • Construction & finish: Stainless steel exterior, corrosion-resistant, safety-coated
  • Storage capacity: 6-gallon available volume supports continuous flow needs
  • Dimensions: 18" W x 29.13" D x 18" H for space-efficient placement
  • Operation features: Electronic display, leak detection, low water cut-off enhances operational safety
  • Electrical compatibility: Requires three-phase power connection and proper circuiting
  • Plumbing connection: Compatible with standard commercial water lines and pressure regulation devices
  • Ventilation needs: No external ventilation required due to electric operation
  • Installation clearance: Sufficient space around for maintenance and access
  • Flow rate integration: Supports moderate flow rates suitable for high-demand kitchen workflows

What is a commercial booster heater?

A commercial booster heater is a high-capacity water heating device designed to supply hot water rapidly in foodservice settings. The Hubbell J639T booster heater integrates a 39.0 kW electric heating element with a 6-gallon stainless steel tank, engineered for moderate-volume applications such as busy restaurant kitchens and institutional foodservice operations. Installed to boost existing hot water supply, it provides reliable, efficient heating, suitable for scenarios requiring quick turnaround and continuous hot water availability in high-demand environments.

Top Foodservice Booster Heater for Moderate Commercial Kitchen Demand

This robust booster heater from Hubbell, model J639T, combines durable stainless steel construction with precise electronic controls, optimized for moderate throughput commercial kitchens. Its reliable performance and safety features support high-volume foodservice operations requiring consistent hot water supply for cooking, cleaning, and sanitation tasks.

  • Operation type — tailored for medium-scale restaurant kitchens
  • Kitchen setting — designed for compact commercial environments
  • Foodservice category — ideal for restaurants and cafeterias
  • Workload qualifier — supports moderate throughput demands
  • Use case — improves workflow efficiency in busy kitchens

Why Choose Hubbell J639T Booster Heater Electric?

Hubbell J639T stands out from similar commercial booster heaters through its combination of high wattage performance, stainless steel durability, and advanced electronic controls. Its self-contained design ensures easy installation, while leak detection and safety shut-offs enhance operational reliability. Its compact footprint and adaptable mounting options make it suitable for a variety of high-demand kitchen configurations, improving efficiency and safety in foodservice environments.

  • Self-contained unit requiring minimal external connections
  • High-performance 39.0 kW electric element for rapid heating
  • Corrosion-resistant stainless steel tank enhances longevity
  • Integrated leak detection and low water cut-off for safety
  • Compact footprint suits space-constrained kitchens

Certifications

UL Listed logo

UL Listed

The item has been tested by Underwriters Laboratories (UL) for sanitation hazard standards and meets or exceeds expectations.

NSF Listed logo

NSF Listed

The item meets the standards imposed by NSF International. These standards relate to health, public safety and the environment.

UL EPH logo

UL EPH

This item meets or exceeds ANSI/NSF requirements and complies with United Laboratories (UL) EPH standards.

cUL logo

cUL

Tested by Underwriters Laboratories and certified for use in Canada, this product meets strict Canadian safety standards.

Certifications

Customer reviews

Hubbell J639T Booster Heater Electric 39.0 KW
Hubbell Water Heaters

Hubbell J639T Electric 39 kW Booster Heater with 6 Gallon Storage Capacity

$4,618.75 $7,970.00

Hubbell Water Heaters, J639T, Booster Heater, electric, 39.0 kW, 6-gallon storage capacity, ASME stamped stainless steel tank with CFC/HCFC free closed cell foam insulation, electronic display controller with low water cut-off & leak detection, stainless steel exterior, pressure reducing valve with by-pass, T&P gauge, T&P relief valve, adjustable plastic legs, UL, cUL, ASME, UL EPH (ANSI/NSF 5)