Tuesday, December 5, 2017

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.


Wednesday, November 15, 2017

Ariston Thermostat #65105602 Discontinued

GlobalTowne would like to announce that the Ariston thermostat #65105602 has been discontinued.  This thermostat was good for Ariston models GL2.5/GL4/GL2.5Ti and GL4Ti.  GlobalTowne still has some stock of these thermostats but when they are gone there is no replacement available.  Bosch is currently putting together a retrofit kit with the manufacturer and would include the new GL2.5S/GL4S/ES2.5/ES4  thermostat #87387044410, new element, anode rod, cover and temperature control knob.  This retrofit kit is still under discussion and Bosch will announce the decision soon if they are going with the new kit.

Attached below is the list of part numbers, items, and visual of the items necessary to replace the older discontinued thermostat.

87387044390    Heating element
87387044410    Thermostat ES 2.5/4
87387044440    Temperature Knob
87387044460    Plastic Cover
87387044470    Anode Rod


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


Tuesday, October 31, 2017

Low Stock on Bosch GWH425EF LP (Liquid Propane) Gas Tankless Water Heater

GlobalTowne is almost out of stock on the Bosch GWH425EF LP (Liquid Propane) Gas Tankless Water Heater.  The Bosch 425EF LP is a direct vent tankless water heater designed for 1 major application at a time up to 3.6 GPM.  The Bosch 425EF LP requires power and has electronic ignition and a built in fan for blowing the exhaust gases to the outside. This 425 should be vented horizontal to the outside using 4" diameter single wall stainless steel venting.  This Bosch model 425EF LP is also the direct replacement for the older Bosch 125FX LP.  Supply is limited so order soon.
Please call GlobalTowne at 888-726-9752 for further questions or to place an order.

Wednesday, September 27, 2017

Bosch Powerstream Flow Switch Part Numbers

GlobalTowne carries most parts for the Bosch gas and electric tankless water heaters.  This information is to confirm the difference between the older flow switch and the newer flow switch for Bosch Powerstream and Powerstream Pro units.  The older flow switch part number 8-738-701-694-0 would be for any Powerstream and powerstream Pro models with a serial number beginning with "31" or less.  The newer flow switch part number 8-738-700-865-0 is for the newer Powerstream and Powerstar units with a serial number of "32" or higher.

The old style is 87387016940
(serial number 31 and below)

The new style is 87387008650
(serial number 32 and higher)

For further questions or to order parts please call GlobalTowne at 888-726-9752.


Wednesday, August 30, 2017

Bosch Therm 830ES/940ES/940ESO Gas Tankless Water Heaters

GlobalTowne has just added the Bosch 830ES, 940ES and 940ESO units to our website. The Bosch Therm 830ES and 940ES replaces the older retail units Bosch 2400ES and Bosch 2700ES. The 830ES and 940ES are direct replacements for the older 2400ES and 2700ES.  the only difference is the part number.  The Bosch Therm 940ESO is an outdoor unit and comes with the Bosch Therm Outdoor Kit (BTOK). Below are more specifications on the heaters and a link to them off our website.

Bosch Therm 830ES
175,000 BTU
Comes in either Natural Gas (NG) or Liquid Propane (LP)
Good for 2 applications at a time
3/4" water/gas connections
Venting is 3" single wall stainless steel
Energy Factor .83
Weight 67 lbs
Size 30.5 x 17.875 x 11.25

Bosch Therm 940ES
199,000 BTU
Comes in either Natural Gas (NG) or Liquid Propane (LP)
Good for 2-3 applications at a time
3/4" water/gas connections
Venting is 3" single wall stainless steel
Energy Factor .83
Weight 67 lbs
Size 30.5 x 17.875 x 11.25

Bosch Therm 940ESO (Outdoor Unit)
199,000 BTU
Comes in either Natural Gas (NG) or Liquid Propane (LP)
Good for 2-3 applications at a time
3/4" water/gas connections
Comes with BTOK for outdoor installation
Energy Factor .83
Weight 72 lbs
Size 30.5 x 17.875 x 11.25

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



Tuesday, July 25, 2017

Replacement Parts for Bosch Therm 830ES Gas Tankless Water Heater

GlobalTowne is now carrying most all of the replacement parts for the Bosch Therm 830ES gas tankless water heater.  The Bosch 830ES comes in Natural Gas (NG) or Liquid Propane (LP) and is a non-condensing heater.  GlobalTowne carries most of the parts for the Bosch 830ES but if there is something we do not carry we can just have it drop shipped right from Bosch to the customer.  Please see the list below for most of the parts we carry.  Please remember that all Bosch replacement parts are non returnable.


  • Ignition Group - Part #87013022490
  • Freeze Prevention Kit - Part #7709003665
  • Control Unit - Part #87387083840
  • Primary Fan - Part #87072040710
  • Secondary Fan LP - Part #87072040720
  • Water Valve w/engine - Part #87085050230
  • Hydrolic Block - Part #87387046720
  • Main Burner - Part #87081206990
  • Exhaust Collar - Part #87055041620
  • Air Intake Collar - Part #87055041160
If you do not see the part you are looking for please call us at 888-726-9752 and we can help you get the part you need.


Monday, June 5, 2017

Low Stock on Bosch Aquastar 125B NG (Natural Gas)

GlobalTowne is almost out of stock on the Bosch Aquastar 125B NG (Natural Gas) unit.  The Bosch 125B NG is a naturally drafting gas tankless water heater designed for 1 major application at a time up to 3.6 GPM.  The 125B NG has piezo ignition and features a standing pilot light and requires no electrical power. This unit is great for off grid applications.  The Bosch 125B NG vents vertically using a 5" B-vent galvanized pipe.

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

Tuesday, May 16, 2017

Low Stock on Bosch 1600H NG

GlobalTowne is almost out of stock on the Bosch 1600H NG (Natural Gas) unit.  The Bosch 1600H NG is a naturally drafting gas tankless water heater designed for 1 major application at a time up to 3.6 GPM.  The 1600H NG activates with a hydro ignition system and requires no electrical power. This unit is great for off grid applications.  The Bosch 1600H NG vents vertically using a 5" B-vent galvanized pipe.

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

Thursday, April 27, 2017

Low Stock on Aquastar 125BO NG Outdoor Tankless Water Heater

GlobalTowne has just a limited supply of the Bosch Aquastar 125BO NG outdoor tankless water heaters left in stock.  The Bosch AquaStar 125 BO model has a pilot light and offers a Piezo push-button ignition and utilizes a modulating gas valve to ensure a constant temperature at varying flow rates. The 125BO is designed to be installed outdoors and has a 120V plug that is only used for freeze protection. The 125 BO is the perfect tankless solution for smaller families and households that only use no more than two hot water applications at a time.  The last Aquastar 125BO units left are for Natural Gas (NG) so call soon while supplies last.
Please call GlobalTowne at 888-726-9752 for further questions or to place an order.

Tuesday, March 21, 2017

Heat Sink Paste Application for Bosch Electric Tankless PCB Board Replacement

This will cover a little more in depth application of the heat sink paste that needs to be applied to the back of the triacs on the pcb board for the Bosch High KW electric tankless water heaters.  When you are replacing the PCB control board on a Bosch electric tankless water heater for the high KW units such as the AE-115/WH17 or the AE-125/WH27 you want to make sure to apply the heat sink paste that comes with the new PCB board.

The heat sink paste will come in a small syringe type applicator and a small amount will need to be applied to the back of each triac.  The triac's are the small black squares to the left of the PCB board labeled by the letter G in the picture below.  The Bosch AE-115/WH17 will have 4 small black triac's to the left of the PCB board and the AE-125/WH27 will have 6 small black triacs to the left of the PCB board.  There are service bulletins that show the PCB board replacement and heat sink application.  Bosch Service bulletin EP-22 will show the PCB board replacement for all the newer high KW units with polymer modules.    Bosch Service bulletin TWH-E2-22 will show the PCB board replacement for all the older high KW units with copper canisters.

For further questions or to purchase a new PCB control board visit this link:
or please call GlobalTowne at 888-726-9752 or visit our website.


Tuesday, February 28, 2017

Bosch AQ4 Powervent Kit Discontinued

The Bosch AQ4 Power Vent kit has been discontinued.  This powervent kit was designed and used for the Bosch models:  1600P, 1600H, 520PN and 520HN heaters.

GlobalTowne still has a couple of the Bosch AQ4 Powervent kits available while supplies last.

Bosch still has some parts in stock for the AQ4 power vent kit such as the Blower motor and other various parts. Stock for the individual parts for the AQ4 powervent kit will only be available for a limited time as supplies last. Please call us at 888-726-9752 for pricing and availability for individual parts.

The Bosch AQ4 powervent kit was designed to make the naturally drafting 1600 and 520 series heaters capable of sidewall venting.



Tuesday, January 31, 2017

Marey Gas Tankless Water Heaters for Camps and Cottages

GlobalTowne is now carrying the Marey gas tankless water heaters and these are great for camps and cottages as they require no power to operate.  The Marey gas tankless water heaters run on 2 D-cell batteries and require no electrical power.  There are 3 different models such as the Marey GA 16L, Marey GA 10L and the Marey GA 5L.   These units come in either Natural Gas (NG) or Liquid Propane (LP).
Click here for more information about the Marey Gas Tankless Water Heaters for off grid applications.