Bosch Tronic 6000 C 4-Gallon Mini Tank Water Heater

Model GL-4
4.4/5 from 240 ratings
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Price as of Apr 2026
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Btu
2640
Voltage
120V
Fuel Type
Electric
Tank Type
Point-of-Use
Energy Factor
0.95
Warranty Years
6

Bosch Tronic 6000 C 4-Gallon Mini Tank Water Heater Review

The Bosch Tronic 6000 C 4-Gallon Mini Tank is the mid-size Bosch mini-tank for point-of-use applications, sized between the 2.5-gallon Tronic 3000T and 6-gallon Tronic 6000C. The 4-gallon capacity covers moderate single-fixture demand at standard 120V power.

Specs: 4 gallons stored, 1440W heating element on 120V outlet, recovery rate ~7 gallons per hour, vacuum-insulated tank for low standby losses. UEF 0.91. About 13" diameter × 19" tall.

The 4-gallon capacity covers handwash + dish-rinse + occasional brief use at remote fixtures. Adequate for secondary bathroom sink in finished basement, in-law suite kitchen, pool house bathroom (handwash only — not shower-grade flow). The Tronic 6000C series adds vacuum insulation versus the basic Tronic 3000T at the same capacity.

About $290 unit, $400-$550 installed. 5-year warranty on the tank. Reasonable DIY for any homeowner with basic plumbing skill.

Full Specifications

Brand
Bosch
Model Number
GL-4
Btu
2640
Voltage
120V
Fuel Type
Electric
Tank Type
Point-of-Use
Energy Factor
0.95
Warranty Years
6
Capacity Gallons
4

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