Bosch Therm Tankless Product Number Changes

Recently Bosch has changed their naming strategy for the Bosch Therm line up of Tankless Water Heaters. Previously, the Bosch part numbers reflected the flow rate at a 45 degree F temperature rise; now the part numbers reflect the flow rate at a 35 degree F temperature rise.

So, for example, the legacy Bosch Pro 920ES is now the Bosch Therm  C 1210ES. This means that this heater can produce 9.2 GPM of hot water at a 45 degree F rise and 12.1 GPM at a 35 degree F rise.

This naming change was done, so it seems, to align Bosch with an emerging industry de facto standard of showing the flow rate at a 35 degree F temperature rise. In reality, showing the flow rate at a 45 degree F temperature rise made more sense as a 45 degree F temperature rise is more realistic average across the US. However, with other manufacturers advertising their heaters 35 degree F flow rate, it appeared that their tankless water heaters had a higher flow rate (which was of course not true).

So, now Bosch's published flow rates allow for easier comparisons to those of other manufacturer's heaters.

Bosch did make some upgrades to the new models, so actually the newer heaters have more capabilities than their older legacy heaters. More about those details in later blog entries...

Here is a brief listing of the name changes:

• Old: Bosch Pro 920ES  |  New: Bosch Therm C 1210ES
• Old: Bosch Pro 920ESC  |  New: Bosch Therm C 1210ESC
• Old: Bosch Pro 800ES  |  New: Bosch Therm C 1050ES
• Old: Bosch Pro 715ES  |  New: Bosch Therm 940ES & Bosch Therm 940ESO
• Old: Bosch Pro 425HN  |  New: Bosch Therm 520HN
• Old: Bosch Pro 425PN  |  New: Bosch Therm 520PN
• Old: Bosch Pro 260PN  |  New: Bosch Therm 330PN

The part numbers for the Bosch Electric whole-house and point-of-use tankless water heaters did not change, nor did the Ariston Pro Ti names change.

Call us for pricing on any of the new Bosch Therm Tankless Water Heaters at 866.289.4652.

Global ProTankless Supply

Bosch Therm Tankless Water Heaters

This blog is dedicated to the discussion of all things that relate to the Bosch Thermotechnology line of natural gas, liquid propane and electric tankless water heaters for professional installers.

The Bosch Thermotechnology line of tankless water heaters can only be sold to professional installers (not directly to home owners). The Bosch Therm tankless water heaters are divided into residential and commercial offerings.

Bosch Therm lineup of Gas tankless water heaters

The top-of-the-line Bosch Therm gas and propane tankless water heaters are 92% efficient and include secondary condensing heat exchangers that allow for the use of PVC exhaust piping.

When installed by licensed professionals, the Bosch Thermotechnology line of professional tankless water heaters offer longer-term warranties than are available with the Bosch Retail line of tankless water heaters.

We sell the complete line of Bosch Therm tankless water heaters through our new web site at http://www.prowaterheatersupply.com. We can also be reached directly at 866.289.4652.

We hope that you will find the content of this blog to be informative!

Global ProTankless Supply