Monday, April 17, 2023

Overstocked on Bosch Tronic 6000C WH17 & WH27

Global Protankless Supply is currently overstocked on the Bosch Tronic 6000C WH17 & WH27 whole-house electric tankless water heaters.  The Bosch Tronic 6000 C WH17 (45-551721, 45551721) & WH27 (45-557721, 45557721) are ideal for replacing your electric storage tank water heater. The Bosch Tronic 6000 WH17 & WH27 electric whole house tankless water heaters are compact and powerful and can installed virtually anywhere inside the home. Advantages include endless hot water, reduced electricity costs and substantial space savings. These new models feature a digital display and a thermostat control on the front of the unit.  Below are more details and specifications for these 2 models.


The Bosch Tronic 6000C WH27 is the direct replacement for the Bosch Tronic 5000 C WH27 (45-557710, 45557710) and it also replaces the older Powerstream Pro RP27PT (45-551302, 45551302, 45-557702, 45557702) and the Bosch PowerStar AE125 (45-557701, 45557701, 45-551301, 45551301). Please note that the older Powerstream Pro RP27PT and the PowerStar AE125 electric tankless water heaters were 15.5 x 15.25 x 4.5 inches while the Bosch Tronic 6000 Model WH27 measures 12.5 x 15.25 x 4.5 inches, just like the Bosch Tronic 5000 WH27. 

Bosch Tronic 6000 WH27 Electric Tankless Water Heater Specifications:
• Efficiency - 94%
• Weight - 22 lbs.
• Dimensions - 12½" x 15¼" x 4½"
• Water Fittings - ¾" male NPT
• Volts - 240
• Kilowatts - 26.85kWh
• Amps -
 o US: 120 (3 x 40 amps)*
 o CANADA: 120 (1 x 120 amps)**
• Wire Size -
 o US: 8 gauge (6 conductors & ground)
 o CANADA: 2 gauge (2 conductors & ground)**
• Phase - Single
• Minimum Flow Rate at Given Temperature Rise -
 o 45ºF Rise 4.0 gpm***
 o 50ºF Rise 3.7 gpm
 o 60ºF Rise 3.0 gpm
 o 70ºF Rise 2.6 gpm
 o 80ºF Rise 2.2 gpm


The Bosch Tronic 6000C WH17 is the direct replacement for the Bosch Tronic 5000 C WH17 (45-551710, 45551710) and it also replaces the older Powerstream Pro RP17PT (45-551702, 45551702, 45-550302, 45550302) and the Bosch PowerStar AE115 (45-551701, 45551701, 45-550301, 45550301). Please note that the older Powerstream Pro RP17PT and the PowerStar AE115 electric tankless water heaters were 15.5 x 15.25 x 4.5 inches while the Bosch Tronic 6000 Model WH17 measures 12.5 x 15.25 x 4.5 inches, just like the Bosch Tronic 5000 WH17. 


Bosch Tronic 6000 WH17 Electric Tankless Water Heater Specifications:
• Efficiency - 94%
• Weight - 22 lbs.
• Dimensions - 12½" x 15¼" x 4½"
• Water Fittings - ¾" male NPT
• Volts - 240
• Kilowatts - 17.25kWh
• Amps -
 o US: 80 (2 x 40 amps)*
 o CANADA: 120 (1 x 80 amps)**
• Wire Size -
 o US: 8 gauge (4 conductors & ground)
 o CANADA: 2 gauge (2 conductors & ground)**
• Phase - Single
• Minimum Flow Rate at Given Temperature Rise -
 o 45ºF Rise 2.6 gpm***
 o 50ºF Rise 2.3 gpm
 o 60ºF Rise 2.0 gpm
 o 70ºF Rise 1.7 gpm
 o 80ºF Rise 1.5 gpm

Please call Global Protankless Supply at 866-289-4652 with any questions or to place an order.

Wednesday, March 15, 2023

New Bosch Tronic 4000C Point Of Use Electric Tankless Water Heaters

Global Protankless Supply would like to announce we are now offering the new Bosch Tronic 4000C Point Of Use Electric Tankless Water Heaters.  Receive an endless supply of hot water on demand with the Bosch Tronic 4000 C.  This electric tankless water heater is compact and lightweight, with 96% efficiency. It also has no stand-by heat loss, meaning no energy is wasted.

Nothing goes to waste when it comes to the Bosch Tronic 4000C. The unit is compact and lightweight, fitting neatly underneath the sink and saving space. Plus, since the water heater is tankless, the unit only runs when needed. No standby losses means no wasted energy. The Tronic 4000C's front knob allows you to easily customize the water temperature and is a perfect fit for point of use application with a constant flow.

The Tronic 4000 C takes up far less space than a traditional water heater, and can be wall mounted right under the sink, taking up practically zero space. Because it runs on electricity and doesn't hold water, there is no venting and virtually no maintenance required. With significant energy and space savings, this tankless water heater is a great choice for your point-of-use applications.

Below are some of the specifications for the Tronic 4000C Models TR4000C-3, TR4000C-6, TR4000C-8, TR4000C-10:
96% efficient with no stand-by loss
Compact and light weight
Control of different power levels
Operating light
As low as 0.55 GPM activation flow rate
5 year limited warranty


For more information or to purchase one of the new Bosch 4000C electric tankless water heaters please call Global Protankless Supply at 866-289-4652



Thursday, January 12, 2023

Bosch Hydronic Air Handler AHU70 & AHU50 Discontinued

Global ProTankless Supply would like to announce that Bosch Thermotechnolgy has discontinued the Bosch Hydronic Air Handler Systems: AHU70 and AHU50. These systems were designed to be used in conjunction with the Bosch gas tankless water heaters.  The Bosch Hydronic Air Handler's were designed to replace furnaces with a ducted system, eliminating the need for a gas pipe, venting, and fresh air in-take required for furnaces.

Global ProTankless Supply now carries the full line of Cozy furnaces for heating and also the Bosch Greenstar gas fired boilers for hydronic heating.  Please click on the links below for alternative heating.

Link to:  Cozy Furnaces

Link to:  Bosch Greenstar Gas fired boilers

Please call Global ProTankless Supply at 866-289-4652 with any questions or to place an order.


Tuesday, January 10, 2023

CZM100 Zoning module for Bosch Greenstar Boilers Now Discontinued

Global Protankless Supply would like to announce that Bosch Thermotechnology is no longer supplying the CZM100 Zoning module 7738110112 for Bosch Greenstar Boilers.  The CZM100 is now discontinued due to the factory where these are made was in the Ukraine.

If you are looking for third party zone manager for the Bosch Greenstar boilers any brand third party control works. Taco, Honeywell, Tekmar, any brand that manages a boiler that has “dry contacts”. All condensing boilers in the USA have two “dry contact” terminals, so the connection is no different than anything else (Navien, Lochivar, NTI, all brands).

For multiple third party zone managers being used this would depend on the third party controllers. Some brands have 3, 5, 6, or more zone controls in a single box. Some will daisy-chain or cascade control boxes. That is up to that control manufacturer. We only need to get a signal on our terminals “TT” to energize or de-energize the boiler.

For further questions concerning the Bosch Greenstar boilers please call Global Pro Tankless Supply at 866-289-4652.



Tuesday, March 22, 2022

Phase-Out of Bosch Therm 830ES & 940ES Tankless Units in Canada

Bosch Thermotechnology would like to inform you of the phase-out of the
non-condensing gas tankless models 830 ES and 940 ES, in Canada.
This phase-out only applies to Canada (i.e. there are no changes to the
US product portfolio). 

Due to a regulation amending the 2016 Energy Efficiency Regulations
(Amendment 15, SOR/2019-164), which affects appliance efficiency
requirements, all non-condensing gas tankless models will be phased out in Canada. Therefore, Bosch Therm 830 ES and Therm 940 ES will
be phased-out as of December 31, 2019.  Spare parts for these tankless water heaters will still be available for sale in Canada.

Global Protankless Supply would like to say that the new Bosch Greentherm 9000 Series condensing units are still available for sale in Canada.  Below are links to the new Bosch Greentherm 9000 Series units:

Link to:

Please call Global Protankless Supply at 866-289-4652 for further questions or to place an order.


Wednesday, December 8, 2021

New Bosch Singular Wall-Hung Combination Condensing Boilers

Global Protankless Supply is now carrying the new Bosch Singular Wall-Hung Combination Condensing Boilers.  The new Singular boilers come in 2 different BTU sizes and they are 155K BTU and 199K BTU.  

Bosch Singular combi boilers are the "singular solution" for efficient, dependable home heating with up to 7.7 gallons per minute of domestic hot water production.  Singular boilers are a cost-effective wall-mounted combi boiler that can be used in many hydronic heating applications.

Their small, lightweight form makes for easy installation, and the stainless steel heat exchanger system offers excellent performance at a cost-effective price. Singular is highly efficient, with a 95% AFUE rating; this makes your new system eligible for up to 75% savings in local and/or federal energy rebate programs. Visit BoschHeatingandCooling.com to find the available efficiency rebates in your area.
Below are some specifications:
*  High-efficiency condensing combi wall boiler - 95% AFUE rating
*  Built-in boiler circulator pump
*  Stainless steel primary & secondary heat exchangers for cost-effective, reliable performance
*  All models are field convertible from NG to LP with included conversion kit
*  Capable of outdoor reset with accessory temperature sensor (not included)
*  Eco-friendly low NOx metal fiber burner 
*  Turndown ratio up to 10:1
*  2" PVC vent up to 60' (3" venting up to 150')
*  10-year heat exchanger, 5-year parts, and 1-year labor limited warranty

For more information or to order one of the Singular boilers please call Pro Tankless Supply at 866-289-4652


Monday, August 30, 2021

Limited Stock on Bosch ProTankless 425HN-LP (Liquid Propane) whole-house tankless water heater

Global Protankless Supply would like to announce that we currently have limited stock on the Bosch ProTankless 425HN-LP (Liquid Propane) whole-house tankless water heater.  

The Bosch ProTankless 425 HN L (Liquid Propane) incorporates an evolutionary hydro-power ignition system which allows this tankless water heater to work without a standing pilot, grid connection or battery! A small turbine inside the water heater uses the energy from the flowing water to ignite the burner. The modulating gas valve then maintains a constant temperature at varying flow rates. This innovative technology, patented by Bosch, makes this an ideal product for installations without access to electricity or regions prone to inclement weather and power outages.


This 117,000 BTU/hr maximum input heater has enough power for running a shower and a sink simultaneously.  

This Bosch Pro Tankless water heater can be used as a replacement for any of the Bosch propane tankless water heaters that used the HydroGenerator, including the Bosch AquaStar 125HX LP, Bosch AquaStar 1600H LP and the Bosch Therm 520 HN L. It can also be used as a replacement for any of the Bosch propane tankless water heaters that had a standing pilot light, including the Bosch AquaStar 125B LP, Bosch AquaStar 1600P LP and the Bosch Therm 520 PN L.

We currently have 9 units left in stock as of 08/30/21

Please call Global Protankless Supply at 866-289-4652 with any questions or to place an order.