Holding Capacity for Bosch Tronic 3000T ES8

The Bosch Tronic 3000T ES8 is a mini tank heater and is not tankless.  The Bosch ES8 is used for point of use like under kitchen sink, bathroom sink, RV's etc..  The Bosch ES8 is not recommended for a shower as it is a mini tank and will go cold after a few minutes.  Some people do use them in RV's for a shower but will only last for 4-5 minutes then hot water will run out.

The Bosch ES8 can be hooked up to the water plumbing lines 2 different ways.  If the Bosch ES is hooked up with the water connection pipes coming out of the top of the unit vertical the unit will deliver around 7.0 gallons of hot water due to the way the piping inside the unit is.

If the Bosch Tronic 3000T ES8 is hooked up with the water pipe coming out the right side horizontal then the Bosch ES8 will produce around 5.1 gallons of hot water before going cold.

These same specifications and holding capacities also pertain to the Bosch models GL6+, GL6+S, GL8Ti and GL8TiS.

Please call GlobalTowne at 888-726-9752 for further questions or to place an order.

New Ariston "S" Series Replacement Parts

UPDATE 08/17/2023

Bosch Thermotechnology has recently changed the part number for the Bosch GL6+S/GL8TiS/ES8 Thermostat.  The old part number was 87387044420 and the new part number is 8738711261.  GlobalTowne carries this thermostat in stock and can be found at the link below:

GL6+S/GL8TiS/ES8 Thermostat 8738711261

GlobalTowne.com sells user replaceable spare parts for the New Ariston "S" Series Line of mini-tank electric water heaters.  Be sure to buy the correct parts -- one set of parts works for the New Ariston GL2.5S and GL4S models while another set of parts works for the Ariston GL6+S model.

For the Ariston GL2.5S and Ariston GL4S electric mini-tank water heaters we sell the replacement for the sacrificial Anode Rod #87387044470 (Old part #574305). This part can be used for the Ariston GL2.5/GL2.5S, Ariston GL4/GL4S, Airston GL2.5Ti/GL2.5TiS, GL4Ti/GL4TiS and Ariston ES2.5/ES4  mini-tank water heaters as well as for the now obsolete Ariston models P10S and P15S.

We also sell the Ariston GLSKIT which contains the sacrificial anode rod for the Ariston GL2.5S/GL4S Series (#87387044470) as well as the heating element (#87387044390) and the GLS gasket (#87387044500). This Kit can be used for the Ariston GL2.5S, Ariston GL4S, Airston GL2.5TiS, Ariston GL4TiS, ES2.5 and ES4 mini-tank water heaters.

We sell the Ariston GL6+S KIT which includes the element, anode rod, gasket and bolts.  This kit can also be used for the pro series heater Bosch Tronic 3000T ES8.

For the Ariston GL6+S electric mini-tank water heater we sell the replacement for the sacrificial Anode Rod (#87387044480) (Old number #570241). This slightly longer part can also be used for the Bosch Pro Ariston GL8Tiand ES8 mini-tank water heaters.

The new Ariston GL2.5S/GL4S take a new Wired Thermostat #87387044410.  The old part number was #7738002302.  This new wired thermostat can also be used for the GL2.5TiS/GL4TiS and the ES2.5/ES4.

The new Ariston GL6+S takes a new Wired Thermostat #87387044420. This new wired thermostat can also be used for the ES8.